Answer:
9x - 5 = 6
9x = 6 + 5
9x = 11 (divide both sides by 9 to get x)
9x/9 = 11/9
x = 1.22222222222
SYTEM OF INEQUALITIES , 65 points.
HELP
Answer:
[tex]2x+3y\geq 60\\x>10[/tex]
Step-by-step explanation:
We know that she will be selling bracelets for $2 each and earrings for $3 each. That means we will have 2x+3y, where x is the number of bracelets she sells and y is the number of earrings she sells. Then we will have [tex]\geq 60[/tex] because she wants to sell at least $60 worth of earrings and bracelets. That means the amount she makes from bracelets and earrings combined has to equal 60 or more, thus we use the greater than or equal to sign.
Now we have [tex]x>10[/tex], where x is still the number of bracelets sold. She said she will sell more than 10, which means we will just have [tex]>10[/tex]. If she said she wanted to sell at least 10, then it would be [tex]\geq10[/tex].
Therefore the system of inequalities is:
[tex]2x+3y\geq60\\x>10[/tex]
Hope this helps!
ILL BRAINLIEST YOU IF YOU GET IT RIGHT
Which diagram shows a pair of angle measure that proves lines c and d are parallel?
Answer:
C
Step-by-step explanation:
At first glance, it seems like all the answers work. But some careful thinking allows us to find the correct answer.
For this question, we will be using the process of elimination.
First, we can eliminate D, because it does not provide any angles on line d, so we cannot prove that line c is parallel to line d.
Second, we can eliminate A. It seems that the 2 angles makes it so that lines c and d must be parallel, however, that is only true if lines a and b are parallel. Since we don't know whether or not lines a and b are parallel, we cannot prove that lines c and d are parallel, so we can eliminate this choice.
Third, we can eliminate B. Like the diagram in A, this diagram can only prove lines c and d are parallel if lines a and b are parallel, and since we don't know whether or not lines a and b are parallel, we cannot prove tat lines c and d are parallel, so we can eliminate this choice.
We are left with C, so the answer must be C.
Of course, just to make sure, we will also check diagram C. Because the 2 angles provided in the diagram are on line a and none are on line b, we do not need line a to be related to line b in any way, as such we can pretend that line b does not exist in this diagram. We can then see that lines c and d must be parallel for this diagram, or else the angles would not work, so C is correct.
Two angles whose sum is 180° are called supplementary angles. The correct option is C.
What are supplementary angles?Two angles whose sum is 180° are called supplementary angles. If a straight line is intersected by a line, then there are two angles form on each of the sides of the considered straight line. Those two-two angles are two pairs of supplementary angles. That means, that if supplementary angles are aligned adjacent to each other, their exterior sides will make a straight line.
When two parallel lines are cut by a transverse. The angles formed on the exterior of the parallel lines are known as the Exterior Angle.
Now, For two lines two be parallel in the given diagram the measure of the angle the exterior angle on the same side of the transverse should be supplementary to each other.
The diagram shows a pair of angle measure that proves lines c and d are parallel in option c. This is because lines c and d are parallel and a is transversal to the two lines. And the measure of the exterior angles formed on the same side of the transversal is supplementary.
Hence, the correct option is C.
Learn more about Supplementary angle here:
https://brainly.com/question/2882938
#SPJ2
Amy buys 23 envelopes for 16p each and pays with a £5 note. How much change does she get? Give your answer in pounds
Answer: £1.32
Step-by-step explanation:
Amy buys 23 envelopes and each of them cost 16p.
1p makes a pound so 16 pence is £0.16.
23 envelopes would cost:
= 0.16 * 23
= £3.68
Her change in Pounds would be:
= 5 - 3.68
= £1.32
Kyle is a satellite radio sales representative. He receives 7% commission on all sales. If
the total sales for the year were $345,000, what would his commission be?
Answer:
24,150
Step-by-step explanation:
7% of 345,000 = 24,150
2 Which is a factor of x² + 5x – 24?
1) (x + 4)
2) (x - 4)
3) (x + 3)
4) (x – 3)
Answer:
(X+3)
Step-by-step explanation:
Which statement is true about this set of data?
43, 50, 60, 36, 47, 50, 52, 78
A. The range is 31.
B. The mode is 78
C. The median is 51
D. The mean is 52.
Answer:
D. The mean is 52.
Step-by-step explanation:
In order to find the mean, you add up all of the numbers and then divide that answer by how many numbers there are.
43+50+60+36+47+52+78=416
416/8=52
Answer:
D. The mean is 52.
Step-by-step explanation:
Add all numbers in the set:
36+47+50+50+52+60+78= 416
Now, divide the sum by how many numbers are in the set; in this case, there are 8 numbers so:
416÷ 8= 52
Emi computes the mean and variance for the population data set 87, 46, 90, 78, and 89. She finds the mean is 78. Her steps for finding the variance are shown below.
sigma squared = StartFraction (87 minus 78) squared + (46 minus 78) squared + (90 minus 78) squared + (78 minus 78) squared + (89 minus 78) squared Over 5 EndFraction. = StartFraction 9 squared minus 32 squared + 12 squared + 0 squared + 11 squared Over 5 EndFraction. = StartFraction 81 minus 1,024 + 144 + 0 + 121 Over 5 EndFraction. = StartFraction negative 678 Over 5 EndFraction. = negative 135.6
What is the first error she made in computing the variance?
Emi failed to find the difference of 89 - 78 correctly.
Emi divided by N - 1 instead of N.
Emi evaluated (46 - 78)2 as -(32)2.
Emi forgot to take the square root of -135.6.
Answer:
135.6
i think
Step-by-step explanation:
Emi evaluated (46 - 78)² as -(32)². The variance of the given data is 274. Therefore, option C is the correct answer.
Given that, the population data set is 87, 46, 90, 78, and 89.
Here, mean = [tex]\bar x[/tex] =78 and n=5
We know that, mean [tex]\bar x=\frac{\sum x_i}{n}[/tex] and variance = [tex]\sigma^2=\frac{\sum (x_i-\bar x)^2}{n}[/tex].
Here, σ² = [(87-78)²+(46-78)²+(90-78)²+(78-78)²+(89-78)²]/5
= (9²+(-32)²+12²+0²+11²)/5
= (81+1024+144+121)/5
= 1370/5
= 274
So, the variance is 274.
Therefore, option C is the correct answer.
Learn more about the variance here:
https://brainly.com/question/29615374.
#SPJ7
The shapes of the horizontal cross-sections of the cylinder below are not all
congruent
A. True
B. False
Is the relationship linear, exponential, or neither ?
Answer:
Linear
Step-by-step explanation:
Answer:
Linear, there is a constant rate of change
Step-by-step explanation:
????????????????? I NEED HELP WITH THIS WILL GIVE BRAINLIEST
Answer:
#3 is 40
#4 is 90
Step-by-step explanation:
a woman sold an article for 400.00and made a profit of 25%,Find ty cost price and profit
Answer:
$100 profit, $300 cost
Step-by-step explanation:
So 25% of $400 is $100, now we know she made $100 on the article
and the other $300 was the amount used to make the article i'm asuming
A woman sold an article for 400.00
made a profit of 25%
Cost price and profit is $100 profit, $300 cost.
What are the 4 types of profit?There are four levels of profit or profit margins: gross profit, operating profit, pre-tax profit, and net profit.
These are reflected on a company's income statement in the following sequence: A company takes in sales revenue, then pays direct costs of the product of service.
What is profit and example?Profit is a term that often describes the financial gain a business receives when revenue surpasses costs and expenses. For example, a child at a lemonade stand spends one quarter to create one cup of lemonade. She then sells the drink for $2. Her profit on the cup of lemonade amounts to $1.75.
To learn more about Profit, refer
https://brainly.com/question/12225249
#SPJ2
1. You start a biology experiment with 4,500 cells. The cells are continuously growing and 2 minutes later
there are about 22583 cells. What is the rate of growth per minute?
Answer:
80.65% per minute
Step-by-step explanation:
For continous growth :
A = Pe^rt
A = amount after time, t
P = initial amount
r = growth rate
22583 = 4500 * e^r*2
22583 = 4500 * e^2r
22583 / 4500 = e^2r
5.0184444 = e^2r
Take the In of both sides
1.61312 = 2r
r = 1.61312 ÷ 2
r = 0.80656
0.80656 * 100% = 80.65%
answer this question for brainliest and 20 points
Answer:
Least to greatest: 2, 3, 1
Step-by-step explanation:
Square root of 8 over 2 is about 1.41 which makes it the least value
2 is obviously equal to 2 which puts it in the middle
Square root of 7 is about 2.64 which makes it the greatest value
4/5 divided by 1/3 ??
Answer:
2.4
Step-by-step explanation:
Please help me In a geometric series, each term is 21% less than the previous term. What is the value of r for this
geometric series?
0.79
0.21
1
1.21
1.21
Answer:
A
Step-by-step explanation:
You need a value that keeps 79% of the previous value. 79% is 0.79 as a decimal.
You get that by taking 100% of the value and subtracting 21% of the value. Said easier (100% x - 21%x = 79% of x.
r = 0.79
Help a formula word problem. Thank you if you help. You're a genuis!
==========================================================
Explanation:
We start with one block at the very left side. This is algebraically written as [tex]a_1 = 1[/tex]. The small subscript '1' means we're dealing with the first term, and that is set equal to 1. In other words, the first term is 1.
The second term is three since we have three blocks as the next figure down the line. So [tex]a_2 = 3[/tex]. We can then see that [tex]a_3 = 6[/tex] and [tex]a_4 = 10[/tex]
The sequence of the first four terms are: 1, 3, 6, 10.
The notation [tex]a_n = a_{n-1} + n[/tex] tells us "to get the nth term [tex]a_n[/tex], we add the previous term ([tex]a_{n-1}[/tex]) to the value of n".
For example, if we wanted the third term, we would add the second term a2 onto the value of n = 2. In order to know a2, we need the diagram or you would have to use the recursive formula to find it.
Furthermore, it means that to find the fifth term [tex]a_5[/tex], we do the following
[tex]a_n = a_{n-1} + n\\\\a_5 = a_{5-1} + 5\\\\a_5 = a_{4} + 5\\\\a_5 = 10+5\\\\a_5 = 15[/tex]
The fifth figure will have 15 small little blocks to it. You can draw this out by copying the fourth figure, and then adding 5 smaller blocks to the very bottom portion. The sixth figure is basically a copy of the fifth one, but we have six little blocks along the bottom. This is the "plus n" being applied in the recursive formula.
So the 6th figure will have 15+6 = 21 blocks in total while the 7th figure has 21+7 = 28 blocks. This points us to choice (3).
Side note: These are known as triangular numbers. Note how the gaps between consecutive values of 1,3,6,10,15,21,28 is +2,+3,+4,+5,+6,+7.
You have 4 hours, and 50 questions. If you have the same amount of time per question, how long will 1 question take?
Need helpppp helppp plzzzz 20 points
Answer: 7^3/7^6= 1/343
Step-by-step explanation: We move 7^-6 to a denominator because we cannot have a negative exponent in the numerator.
So it would be 7^3/7^6
Which then would be 7*7*7/7*7*7*7*7*7
Which would equal 343/117649
Simplify and you get 1/343
Use what you've learned to write the equation of a parabola that is narrower than y = x ,
2
opens downward, and has vertex (2, – 4).
Answer:
y = -a(x – 2)² – 4
a > 1
Example:
y = -2(x – 2)² – 4
Step-by-step explanation:
y = a(x – h)² + k
____________________
vetex: (h, k)
a: vertical reflection or stretch/compression
__________________________________
If it opens downward, has a vertex of (2, -4) and is narrower than y = x².
Then x² will have a negative coefficient of less than -1 and the input of x will be subtracted by the x value of the vertex which is 2, and the output will be added by the y value of the vertex which is -4.
Therefore y = -a(x – 2)² – 4 where a > 1
Expand and simplify: (2x + 5y) (3x − 2y)
Answer:
Expand:5x+3y
Simplify:6x^2+11xy-10y^2
Step-by-step explanation:
2x(3x-2y)+5y(3x-2y)
6x^2-4xy+15xy-10y^2
6x^2+11xy-10y^2
if a store sells a packet of gum for R5.50 what will the cost for the gum be if you add the vat
Answer:
Step-by-step explanation:
It can be anything according to your value added tax.
A number cube with the numbers 1 through 6 is rolled. Find the given probability
[tex]\huge\red{\mid{\underline{\overline{\textbf{ANSWER}}}\mid}}[/tex]
[tex]D)\frac{5}{6}\;is \: your \: answer[/tex]
Answer:
5/6
Step-by-step explanation:
I had this question and it was correct.
1. Hannah bought a package of 12 pens.
She took of the pens to school. How
many pens did Hannah take to school?
Answer:
12
Step-by-step explanation:
If Hannah bought 12 pens and brought them to school, then she would have brought 12 pens to use during school.
solve the following equation
x/3 +4 =7
Answer:
Sorry if im wrong..
Step-by-step explanation:
7 = (7 x)/3 + 4 = 21 x + 4 = 7
7. What is the image of p for a dilation with center (0,0) and a scale factor of 2.5?
A (-2.5, 5)
B (2.5, -5)
C (2, 2.5)
D (-5, -2.5)
Answer:
A (-2.5, 5) Might Not Be Right
Step-by-step explanation:
In the equation: (16)^3=2^3/2x how could you solve for x?
Answer:
x = 8
Step-by-step explanation:
16 is the same as 2^4
(2^4)³ = 2^3/2x
2^12 = 2^3/2x
as long as bases are both the same then set exponents equal
12 = [tex]\frac{3}{2}[/tex]x
3x = 24
x = 8
what are the coordinates of the vertex of the graph or table is it a maximum or minimum
Answer:
I'm pretty sure the answer is D.!
Determine the slope of the line that is perpendicular to the line shown in the picture below.
A. 3
B. 1/3
C. -3
D. 1/3
Answer:
-1/3 i think i might be wrong
Step-by-step explanation:
Answer:
-1/3 because 3/-1 = -3 and -3/3=-1
Step-by-step explanation:
what is the answer to this equation 3 + 3/2x + 4 = 4x - 5/2x
Answer:
No solution
Step-by-step explanation:
When we take the 5/2 x to the other side, 4x and 4x cancels out. We get 7=0 which is incorrect. Therefore, x has no solution.
By the way, can you follow me on Brainly?
Thanks!
Answer:
x= [tex]\frac{7 (+-) \sqrt{113} }{8}[/tex]
Step-by-step explanation:
what is the equation that represents the line
Answer:
The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.
Step-by-step explanation: