Answer:
x=1
Step-by-step explanation:
-2(2x-4)=4x
Distributive property.
-4x+8=4x
+4x +4x
8x=8
/8 /8
x=1
Hope this helps!
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At this rate how long would it take for you heart to beat 700,000 times? Express your answer in days . Now express your answer in days , hours, minutes, & seconds. (Example:2 days , 4 hours 21 minutes, 15seconds)
The time that it would take for you heart to beat 700,000 times is
8days 2hours 26 mints 40second.
To calculate at this rate of heart to beat 700,000 times we take :
It should be noted that the heart beats in a day = 86400 times
(24 hours = 86400 times)
Takes about 1 hour for a heart to beat = 3600times
Takes about 15 mints for a heart to beat = 900times
Takes about 60 sec for a heart to beat = 60times
Therefore,
the number of days will be given as
= 700000 / 86400
= 8.10 days
= 8days 2hours 26 mints 40second.
The time that it would take for you heart to beat 700,000 times is
8days 2hours 26 mints 40second.
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please give the correct answer this is for a grade
a test shows that 10 out of 100 gadgets are defective. in a random sample of two gadgets are chosen the probability that both are defective is
The probability of selecting both defective gadgets out of 100 gadgets is 1/110, which is calculated using the basic concepts of probability theory.
What is a random experiment?
An experiment that is repeated several times and produces more than one possible outcome is called as the random experiment. It contains a well-defined set of values which constitutes a sample space. Eg: Rolling a die, tossing a coin etc.
Calculation of the probability of selecting both gadgets as defective
The total amount of gadgets = 100
Number of defective gadgets = 10
The probability of selecting a defective gadget is 10 / 100 or 1 / 10
Now, the total number of gadgets and defective gadgets are decreased by 1
So, the probability of selecting another gadget as defective is 9 / 99 or 1 / 11
P(E) = P(when two selected gadgets are defective) = 1 / 10 x 1 / 11
P(E) = 1 / 110
Hence, the probability of selecting both defective gadgets is 1/110.
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What is the fewest number of intersection points that two planes can have?
Answer: 4 points
Step-by-step explanation:
The minimum number of points needed to define two distinct planes is 4 points. Two distinct planes can be defined by 4 points under the conditions that the two distinct planes intersect at a line, and two points exist on that line that are shared between the planes.
Answer:
One line of intersection (three points of intersection)
Step-by-step explanation:
When two planes intersect, they don't form points of intersection, but they form a line of intersection.
From equation of a line,
[tex]{ \tt{ax + by + cz = 0}}[/tex]
x, y, z are points of intersection
Two buses, bus A and bus B, both use the same bus stop. Bus A runs every 10 minutes. Bus B runs every 14 minutes. Both buses are at the bus stop at 11 am. What time will both buses next both be at the bus stop. (3 marks)
Use HCF and LCM skills to work out your answer.
Answer:
since Bus A runs every 10 minutes while Bus B runs every 14 minutes
first add the minutes to get equivalent value
=10+14
=24
the value gotten will be added to the time
=24mins+11hrs
=11:24mins
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Use place value ans distributive property to match each multiplication expression with an equivalent expression.
Using the distributive property, the equivalent expressions are given as follows:
3(937) = 3(900) + 3(30) + 3(7).11(143) = 11(100) + 11(40) + 11(3).9(821) = 9(800) + 9(20) + 9(1).5(209) = 5(200) + 5(0) + 5(9).6(342) = 6(300) + 6(40) + 6(2).What is the distributive property?The distributive property is when the outside term of an expression multiplies all the inside terms, keeping the inside operations, as the following example:
a(b + c) = ab + ac.
For this problem, the numbers can be decomposed as follows:
937 = 900 + 30 + 7.143 = 100 + 40 + 3.821 = 800 + 20 + 1.209 = 200 + 0 + 9.342 = 300 + 40 + 2.Applying the distributive property, the equivalent expressions are:
3(937) = 3(900) + 3(30) + 3(7).11(143) = 11(100) + 11(40) + 11(3).9(821) = 9(800) + 9(20) + 9(1).5(209) = 5(200) + 5(0) + 5(9).6(342) = 6(300) + 6(40) + 6(2).More can be learned about the distributive property at https://brainly.com/question/2807928
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HELPP PLSSSSSSSSSS i would really appreciate it
Applying exponential properties, we have that the solution to the given expression is:
[tex]-\frac{125}{343}[/tex]
How do we proceed when a fraction is elevated to the exponent?When a fraction is elevated to the exponent, we apply the exponent to both the numerator and the denominator.
In this problem, we have that:
The numerator is of 5, hence 5³ = 125.The denominator is of 7, hence 7³ = 343.Negative base with odd exponent, hence the solution is negative and given as follows:
[tex]-\frac{125}{343}[/tex]
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A family of four visits the zoo café for lunch. They ordered 2 bacon cheeseburgers, 1
hamburger, 1 chicken fajita taco, 2 large orders of french fries, an order of onion rings, and 4
juices. What was the family’s total bill? Show your work.
Answer:
29.65
Step-by-step explanation:
If an interval estimate is said to be constructed at the 90 confidence level, the confidence coefficient would be _____. a. .1 b. .95 c. .05 d. .9
If an interval estimate is said to be constructed at the 90 confidence level, the confidence coefficient would be 0.9.
Confidence level:
Confidence level means the proportion or frequency of acceptable confidence intervals that contain the true value of the unknown parameter.
For example,
A 0% confidence level means you have no faith at all that if you repeated the survey that you would get the same results.
Confidence Coefficient:
Confidence coefficient states the confidence level stated as a proportion, rather than as a percentage.
For example, if you had a confidence level of 99%, the confidence coefficient would be .99.
Given,
Here we know that the confidence level is 90%, now we have to find the confidence coefficient of it.
Based on the definition,
The confidence coefficient for 90% confidence level is 0.9.
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SECOND TIME ASKING PLEASE HELP WILL GIVE BRAINLIST TO BEST ANSWER
Liz drove his hoverboard 3 miles in 40 minutes. Jim Shue hopped 2 miles in 20 minutes. Who traveled at a greater average speed? Define an appropriate unit of speed and provide mathematical justification for your answer.
Answer:
Jim Shue
Step-by-step explanation:
I think not sure
Arrange the digits 1, 2, 3, 4, 5, 6, 7, 8, and 9 into three groups. Make one
group of two digits, one group of three digits, and one group of four digits.
When you multiply the first group of two digits by the second group of three
digits you get the four digit number as your answer
Example: 39x186=7254
There are six other possible combinations.
Part a:
Answer:
so the answer 1904
Step-by-step explanation:
because 34 x 56 = 1904
There are a total of seven combinations where arranging the digits 1 to 9 into three groups (one group of two digits, one group of three digits, and one group of four digits) results in a four-digit number when the first group is multiplied by the second group.
Here, we have to form the three groups with the digits 1 to 9, we need to consider that the first group of two digits multiplied by the second group of three digits should result in a four-digit number.
The third group will consist of the remaining four digits.
Let's try different combinations:
Group 1 (two digits): 1 and 2
Group 2 (three digits): 3, 4, and 5
Group 3 (four digits): 6, 7, 8, and 9
Now, let's calculate the product of the first group (1 and 2) and the second group (3, 4, and 5):
12 * 345 = 4140
So, when we arrange the digits 1 to 9 as described above, we get the product 4140, which is a four-digit number.
We can also verify the other six possible combinations using different arrangements of the digits into three groups, and each combination should result in a four-digit number when the first group is multiplied by the second group.
Here are the other six possible combinations:
Group 1 (two digits): 1 and 3, Group 2 (three digits): 2, 4, and 5, Group 3 (four digits): 6, 7, 8, and 9
13 * 245 = 3185
Group 1 (two digits): 1 and 4, Group 2 (three digits): 2, 3, and 5, Group 3 (four digits): 6, 7, 8, and 9
14 * 235 = 3290
Group 1 (two digits): 1 and 5, Group 2 (three digits): 2, 3, and 4, Group 3 (four digits): 6, 7, 8, and 9
15 * 234 = 3510
Group 1 (two digits): 2 and 3, Group 2 (three digits): 1, 4, and 5, Group 3 (four digits): 6, 7, 8, and 9
23 * 145 = 3335
Group 1 (two digits): 2 and 4, Group 2 (three digits): 1, 3, and 5, Group 3 (four digits): 6, 7, 8, and 9
24 * 135 = 3240
Group 1 (two digits): 2 and 5, Group 2 (three digits): 1, 3, and 4, Group 3 (four digits): 6, 7, 8, and 9
25 * 134 = 3350
So, there are a total of seven combinations where arranging the digits 1 to 9 into three groups (one group of two digits, one group of three digits, and one group of four digits) results in a four-digit number when the first group is multiplied by the second group.
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Rick's chore list shows that he is responsible for washing the dishes after dinner this week. Last night, he washed 4 plates in 2 minutes. Tonight, his grandparents are coming to dinner, and Rick will wash 6 plates.
If he washes plates at the same rate, how many minutes will it take Rick to wash the plates tonight?
Answer:
3 minutes
Step-by-step explanation:
there are many ways to answer this question you can on it later but im going to write the easiest here
4 plates is 2 minutes
find how many minutes for one plate and times it by 6
2 ÷ 4 = 1/2 minutes or 30 seconds
therefore;
1/2 × 6 = 3 minutes
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Question : Why do we reverse the direction of the inequality symbol when multiplying or dividing by a negative number ??
please write a thought out good answer ! T-T
NO LINKS.
Answer:
Down Here ↓↓↓↓
Step-by-step explanation:
Hello!
Let's take an example: x > y
The rule that we currently have would state that -x < -y.
Now, let's substitute values for x and y. Say x is 5 and y is -3.
5 is greater than -3 (x > y), but -5 would be less than -3. (-x < -y). Hence the inequality would be true.
We can also take a look at this graphically on a number line. Turning a number negative is simply reflecting it over value 0.
As you can see, flipping the signs would change the values. To keep the inequality accurate, we reverse the inequality sign as well.
PLEASE HELP
later Paul drew 2 solid figures and 5 plain figures. in his drawing what was the ratio of solid figures to plain figures
Answer:
2:5
Step-by-step explanation:
WHichever one they ask you for first is the first number in the ratio. Meaning 2 solid figures are 2:1 plain figures.
-3-{3-[-3(2+4)-(-2)]}
Answer:
-22
Step-by-step explanation:
Let's solve the problem,
→ -3 - {3 - [-3(2 + 4) - (-2)]}
→ -3 - {3 - [-18 + 2]}
→ -3 - {3 + 16}
→ -3 - 19 = -22
So, the answer is -22.
laura obtained the plans to create a chair. the seat of the chair calls for six pieces that are 1'10 1/2". what total length will she need if she is planning on making four chairs?
The total length will she need if she is planning on making four chairs is 42 inches.
How to calculate the value?It should be noted that the chair calls for six pieces that are 10 1/2" , therefore, the total length will she need if she is planning on making four chairs will be:
= 10 1/2 × 4
= 10.5 × 4
= 42 inches.
The total length is 42 inches.
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Complete question
laura obtained the plans to create a chair. the seat of the chair calls for six pieces that are 10 1/2". what total length will she need if she is planning on making four chairs?
certain clock is losing time. The clock loses 2/15 seconds every minute. How many seconds does the clock lose in one hour?
Answer:
8 minutes
Step-by-step explanation:
The formula is (2x60)/15=8.
A customer wants to buy 0.3 pounds of mulch that cost $7.30 per pound. if the customer has a coupon for $0.50 off the total cost, how much will they pay for the mulch?
Answer: The customer will pay 1.69$ for the mulch.
Step-by-step explanation:
7.30 = 1 Pound
0.3 = 3/10
3/10 x 7.30 or 3/10 of 7.30 = 2.19
2.19
2.19 = without coupon
1.69 = with coupon.
The total with 50 cents off is 1.69$.
Evaluate the expression for the given values.
m² +7 n if m=4 and n=-2
Answer: -82
Step-by-step explanation: Substitute the values then do order of operations
Two consecutive angles of a parallelogram measure 3 x+42 and 9 x-18 . What are the measures of the angles?
A. 13,167
C. 39,141
B. 58.5,31.5
D. 81,99
Answer:
enjooooooooooooyyyyyyyyyyy
what is the answer to 34^5+6%7=
Answer:
ik what you ment
this is your answer 45,435,439.87
Step-by-step explanation:
Isaac bought two DVD's and spent over 50 . Use indirect reasoning to show that at least one of the DVD's he purchased was over 25 .
By assuming that both DVD's cost $25 or less, we will reach an absurd. In that way we conclude that at least one of the two DVD's costs over $25.
How to use the indirect reasoning?
We know that Isaac bought two DVD's and spent over $50.
Let's define the variables:
x = cost of the DVD 1y = cost of the DVD 2Because the cost is over $50 we can write the inequality:
x + y > $50
Here we want to prove that at least one of the two DVD's costed over $25, now let's find an absurd here, let's assume that neither of the DVD's costed over $25, then we can write:
x ≤ $25
y ≤ $25
So we have a set of 3 inequalities:
x + y > $50
x ≤ $25
y ≤ $25
Now, the maximum values that x and y can take are $25, if we use these values in the first inequality we will get:
$25 + $25 > $50
$50 > $50
So this is an absurd, this means that we can't assume that neither of the DVD's costs over $25, then we conclude that at least one of the DVD's costs over $25, which is what we wanted to prove.
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i really hate math soo pwease help
3 Answers: Choice A, Choice B, Choice E
=========================================================
Explanation:
We have four copies of x in the original expression. So that accounts for the 4x. In other words, 4x = x+x+x+x. Multiplication is used for repeated addition.
Also, the other terms add to 15+5+15+5 = 20+20 = 40
Therefore, we end up with 4x+40 from choice A.
-----------------------------
Once we get to 4x+40, we can factor out 2 from it like so
4x+40
2*2x + 2*20
2(2x+20) which is choice B
I used the distributive property to factor. That rule is a(b+c) = ab + ac
-------------------------------
Choice C is not one of the answers. We can determine this fairly quickly by noting that the expression in choice C talks about a quadratic, but the original expression given to us is linear.
Choice D is a similar story to choice C.
--------------------------------
Choice E is another answer
This is because we have two copies of (x+15), so that gives 2(x+15)
We also have two copies of (x+5) to get 2(x+5)
37 centimeters is the same as how many inches? Hint: 1 cm ≈ 0.39 in Round your answer to the nearest tenth. HELP PLEASE!!!
37 centimeters is equal to approximately 14.5 inches.
In both the British imperial and American customary systems of measurement, the inch serves as a unit of length. It is equal to 1/12 of a foot or 336 yards.The International System of Units (SI) uses centi as the prefix for a factor of 1/100, making a centimeter (international spelling) or centimeter (American spelling) (SI symbol cm) equivalent to one tenth of a meter. In the now-outdated centimeter-gram-second (CGS) system of units, the centimeter served as the fundamental unit of length.We know that 1 cm is equal to 0.39 inches.
So to convert 37 cm to inches we multiply 37 with 0.39
37×0.39=14.47 inches
The length is approximately 14.5 inches (rounded to the nearest tenth)
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Answer:
2.7
Step-by-step explanation:
Convert centimeters to inches by multiplying:
70.39=2.73
So, 7 centimeters is approximately 2.73 inches.
Now round to the nearest tenth.
2.73 → 2.7
7 centimeters is the same as approximately 2.7 inches.
What is the total area of this figure (I am in middle school and a 7th grader just for notes)
Answer:12?
Step-by-step explanation:
A=L x W
Answer:
the total area is 20
Step-by-step explanation:
next time you can just count the boxes that's how I answer these types of questions.
please help very important please
Answer: 7/2
Step-by-step explanation:
Write an equation of the line that passes through the point (1,5) and is (a) parallel to the line y = 3x-5 and (b) perpendicular
to the line y = 3x - 5.
Answer:
[tex]\textsf{An equation of the parallel line is $y = \boxed{3x+2}$}[/tex]
[tex]\textsf{An equation of the perpendicular line is $y = \boxed{-\dfrac{1}{3}x+\dfrac{16}{3}}$}[/tex]
Step-by-step explanation:
Point-slope form of a linear equation:
[tex]\boxed{y-y_1=m(x-x_1)}[/tex]
Where:
m is the slope.(x₁, y₁) is a point on the line.Given:
Equation: y = 3x - 5Point: (1, 5)Part (a)If two lines are parallel, they have the same slope.
Therefore, the slope of the line that is parallel to the given equation is 3.
To find the equation of the line, substitute the found slope and the given point into the point-slope form of a linear equation:
[tex]\implies y-y_1=m(x-x_1)[/tex]
[tex]\implies y-5=3(x-1)[/tex]
[tex]\implies y-5=3x-3[/tex]
[tex]\implies y-5+5=3x-3+5[/tex]
[tex]\implies y=3x+2[/tex]
Part (b)If two lines are perpendicular, their slopes are negative reciprocals.
Therefore, the slope of the line that is perpendicular to the given equation is -¹/₃.
To find the equation of the line, substitute the found slope and the given point into the point-slope form of a linear equation:
[tex]\implies y-y_1=m(x-x_1)[/tex]
[tex]\implies y-5=-\dfrac{1}{3}(x-1)[/tex]
[tex]\implies y-5=-\dfrac{1}{3}x+\dfrac{1}{3}[/tex]
[tex]\implies y-5+5=-\dfrac{1}{3}x+\dfrac{1}{3}+5[/tex]
[tex]\implies y=-\dfrac{1}{3}x+\dfrac{16}{3}[/tex]
1-2x+5=4x-3 i need help
Answer:
X=4/3
Step-by-step explanation:
Answer:The answer would be x=2/3
Step-by-step explanation:Bring 4x over to one side with -2x and bring 5 and 1 over to he other side with -3 and the equation becomes -2x-4x=-3-5-1 then you simplify and it becomes -6x=-9 then you divide and the answer would be x=2/3
The sum of 2 integers is 7 and the sum of their squares is 37 what is the integers
Answer:
[tex]1[/tex] and [tex]6[/tex].
Step-by-step explanation:
Let [tex]x[/tex] denote one of the integers. Since the two integers add up to [tex]7[/tex], the other integer would be [tex](7 - x)[/tex].
The sum of the squares of these integers is [tex]37[/tex]. In other words:
[tex]x^{2} + (7 - x)^{2} = 37[/tex].
Expand [tex](7 - x)^{2}[/tex] using binomial expansion. Simplify and rewrite this equation and solve for [tex]x[/tex].
[tex]2\, x^{2} - 14\, x + 12 = 0[/tex].
[tex]x^{2} - 7\, x + 6 = 0[/tex].
Using the quadratic formula or factorization, [tex]x = 1[/tex] or [tex]x = 6[/tex]. Thus, the two integers are [tex]1[/tex] and [tex]6[/tex].
PLease help me on this
Answer:
C. [tex]2^{3} x3^{2}[/tex]
Step-by-step explanation:
[tex]2^{3} x3^{2}[/tex]
[tex]2^{3} =8[/tex]
[tex]=8x[/tex]·[tex]3x^{2}[/tex]
[tex]3^{2} =9[/tex]
[tex]=8x[/tex]·[tex]9[/tex]
Then multiply 8 · 9 = 72
[tex]=72[/tex]
hopefully this helps you !