What is the scale factor of this dilation?
A:2/3
B:1 1/2
C:3
D:5
Please hurry it’s timed
Answer:
1 1/2
B
Step-by-step explanation:
Two candles were lit and are burning. Candle A has
an initial height of 10 inches and burning down at a
rate of 1.5 inches per hour. Candle B is burning down
at a rate of 0.5 inches per hour and has an initial
height of 6 inches. Let t represent time in hours and
h represent the total height of the candle.
Answer:
A - 6 hours and 40 minutes
B - 12 hours
Step-by-step explanation:
Candle A - After 6 hours: the candle will be 1 inch tall, because 6 times 1.5 = 9. You need an extra 40 minutes for the candle to burn completely, because 10/1.5 = 6 and 2/3
Candle B - After 12 hours, the candle will be completely burned, because 6/.5 = 12.
Equation - Initial height/inches burned per hour = time it takes for cnadle to burn down completely
An account earns annual simple interest. Find the balance of the account.
$5,000 at 6% for 9 months.
Answer:
$7700
Step-by-step explanation:
As the account earns 6% interest, if we find 6% of $5000 we get $300, the interest is simple and given every month, meaning you get $2700 in interest as $300 x 9 months = $2700
$5000 initial + $2700 interest = $7700
EDIT:
It could be that the interest is 6% yearly, which means that yearly you get 6% interest, and the answer is $5225.
6% interest is $300 per year
$300÷12= $25 per month
$25 x 9 months = $225
$5000 initial plus $225 interest = $5225 total
In the diagram, each shape has a value and the sums of the shapes in each of the first three rows is given. Find the sum of the shapes in the fourth row
Answer:
26
Step-by-step explanation:
2 squares + 3 circles = 31. So, the sum of the squares is divisible by two, and the sum of the circles is divisible by 3. Then, I used trial and error to figure out that the square's value is five, and the circle's value is seven. 5 + 7 + 7 = 19. 27 - 19 = 8. The triangle's value is eight. 5 + 7 + 12 = 24. It works. 15 + 7 + 4 = 26
The sum of the shapes in the fourth row is 24 and this can be determined by using the arithmetic operations and by forming the linear equations.
Given :
In the diagram, each shape has a value and the sums of the shapes in each of the first three rows is given.
Let the symbol of the circle be denoted by 'x', square be denoted by 'y', and triangle be denoted by 'z'.
Now, the linear equations that represent the given diagrams are:
2y + 3x = 31 --- (1)
y + 2x + 3z = 27 --- (2)
3y + x + z = 24 --- (3)
Now, evaluate equation (1) for 'y'.
[tex]\rm y=\dfrac{31-3x}{2}[/tex] --- (4)
Now, substitute the value of y in equation (2).
[tex]\rm \dfrac{31-3x}{2}+2x+3z=27[/tex]
31 - 3x + 4x + 6z = 54
6z = 23 - x
[tex]\rm z = \dfrac{23-x}{6}[/tex] --- (5)
Now, substitute the value of 'y' and 'z' in equation (3).
[tex]3\times \dfrac{31-3x}{2}+x+\dfrac{23-x}{6}=24[/tex]
[tex]279-27x+6x+23-x=144[/tex]
158 = 22x
[tex]x = \dfrac{79}{11}[/tex]
Now, substitute the value of x in equations (4) and (5).
[tex]\rm z = \dfrac{23-\dfrac{79}{11}}{6}[/tex]
[tex]z = \dfrac{29}{11}[/tex]
[tex]\rm y=\dfrac{31-3\times \dfrac{79}{11}}{2}[/tex]
[tex]y=\dfrac{52}{11}[/tex]
The last equation is written in terms of x, y, and z as:
= 3y + x + w
Now, substitute the value of known terms in the above equation.
[tex]=3\times \dfrac{52}{11}+\dfrac{79}{11}+\dfrac{29}{11}[/tex]
[tex]=\dfrac{156+79+29}{11}[/tex]
= 24
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Ira and his wife's monthly payment included $1,256.61 for principal and interest, as well as
one twelfth of the annual property taxes of $3,478.50 and one twelfth of the annual
insurance premium on the property of $1,186. What will the total monthly payment be?
Answer:
its 1,645.32
Step-by-step explanation:
search one twelfth of 3,478.50, then one twelfth of 1,186 and add those answers with 1,645.32
A small university has 200 first-year students. Historically at this university, 88% of first-year students graduate in four years. Assume that whether or not one student graduates is independent of whether or not another student graduates. Let X represent the number of first-year students who graduate in four years. What are the mean and standard deviation X?
Answer: c is the answer . 176, 4.60
Step-by-step explanation:
just trust me bro
Jamil makes a drink by mixing
1 part of orange squash with 9 parts of water.
He uses 750 millilitres of orange squash.
Jamil is going to put the drink he has mixed into 1 litre bottles.
Work out the greatest number of 1 litre bottles that Jamil can completely fill.
Answer:
7 bottles
Step-by-step explanation:
first, calculate the volume of the total ammount of soloution
750ml + 9(750ml)=7500ml
then divide by 1000 to put the total into litres
7500/1000=7.5L
7.5L goes into 1L exactly 7 times with a remainder of 500ml as the bottles are required to be completely full
Match the equations to the lines below :
y = 1/2x - 1
y= -1/2x + 1
y= 1/2x + 1
y= -2x - 1
y= 2x - 1
y= -1/2x - 1
Jen has one rope that is 13 1 8 feet long and another that is 21 3 4 feet long. Kelsey has a rope that is 35 1 2 feet long. Which of the following shows who has more rope and how much more? A. Jen has 5 8 feet more rope. B. Jen has 1 5 8 feet more rope. C. Kelsey has 5 8 feet more rope. D. Kelsey has 1 5 8 feet more rope. you will get 15 or more points 5 stars brainisit if you are quick
Answer:
Kelsey has 5/8 feet more rope
Answer: C
Step-by-step explanation:
I need Help with this problem
Answer:
x - 6 = 36 solution is 42 because 42 - 6 = 36
Step-by-step explanation:
Division Keyword: Divided by, or Quotient of.
Multiplication Keyword: Product of, or Multiplied by.
Subtraction Keyword: Subtracted from, or Decreased by.
Addition Keyword: Added to, or Increased by.
If there is no Variable then place the common Variables: X, Y, Z.
Noah wrote that 6+6 =12. Then he wrote that
6+6 -n =12 - n. Are his equations balanced? Explain.
Answer:
Hs equations are balancedStep-by-step explanation:
To check whether both equations are balanced, we will simplify
6+6 -n =12 - n
Add n to both sides of the equation using additive property
6+6-n+n = 12-n+n
6+6 +0 = 12+0
6+6 = 12 (This gives the other equation)
Since they are both equal, this shows that the equations are balanced
y
is directly proportional to
x
2
.
If
y
=
20
when
x
=
2
find
x
when y=45
Answer:
x=4.5
Step-by-step explanation:
so when y=20 and x=2, y is 10 times x so, 45/10=4.5
Answer:
3
Step-by-step explanation:
i said by accident but hegarty says it's right
12b – 5 = 3b
How do you solve for b
Answer:
b=5/9
Step-by-step explanation:
Please hurry; Which function increases the fastest? A. y 5 14x B. y 5 23 · 17x C. y 5 120x D. y 5 2275x^x
a y = 14^x
b y = -3 (17)^x
c y = 120x
d y = -275x
Answer: y = 14^x
Step-by-step explanation:
Here the options are:
a y = 14^x
b y = -3*(17)^x
c y = 120x
d y = -275x
to see which function increases the fastest (or which function is steeper) we need to look at the first derivations of each one of these, and see which one is larger for every value of x:
the derivations are:
a y = x*14^(x - 1)
b y = -x*3*(17)^(x - 1)
c y = 120
d y = -275
So we can already discard options c and d, because have constant rate of change.
Then we keep options a and b.
Always when we have an exponential function, like a^x and b^x
The one with the larger base will be steeper.
So if a > b, then:
a^x is steeper than b^x
In this case, the function:
y = -3*(17)^x
has a larger base, but, this function is negative.
This means that as x increases, our function will decrease, then this function will not "increase the fastest" (because it does not increase)
Then the left option (a: y = 14^x)
Will be the correct one.
(this will happen after some value of x, because two of the options have constant derivatives, these may be steeper for smaller values of x, and as x increases, we will see that y = 14^x is the one that increases the fastest)
!!!ANSWER IMEDDIATELY!!! What is the area of this trapezoid?
Answer:
A
Step-by-step explanation:
I worked it out :)
For this exponential function what is the output value (y) when the input value (c) is 3?
Answer:
y = 40
Step-by-step explanation:
Given, y = 5 * 2^x
If x = 3, y would be:
Substitute the value of x into the given function.
Thus,
y = 5*2³
y = 5*8
y = 40
calcule el cociente de los siguientes ejercicios
(-8)/(+2)
Answer:
-4
Step-by-step explanation:
Can y’all help me a question 25?!
Answer:
19.8839 miles away
Step-by-step explanation:
:)
Could you help with this question?
(X-2)= -5.5
Answer:
-3.5 i believe
Step-by-step explanation:
Answer : X=-3.5
Step-by-step explanation:
Leona has a large bag of apples.
There are 320 apples in the bag.
She uses 1/4 of the apples to make some juice.
She uses 20% of the apples to make some pies.
How many apples are left
Answer:
176
Step-by-step explanation
1/4*320= 80
20%=1/5
1/5*320=64
64+80=144
320-144
Solve 2x + 5 = 12 please help
Answer:
first method
subtract 5 from both side
2x + 5 -5 = 12 - 5
:. 2x = 7
:. X= 2
7
divide 2 from both side
X= 2x 7
2 2
:. X= 3.5
second method
2x = 12 - 5
2x = 7
X= 2 ÷ 7
:. X= 3.5
If you want your life to be color full eat crayons
Answer:
omg.... that makes absolute sense ty I never thougth of it like that
Step-by-step explanation:
Question 3
Describe the function between x=-4 and x = -1.
Answer:
liner increasing
Step-by-step explanation:
Age If you add Natalie's age and Fred's age, the result is 38. If you add Fred's age to 4 times
Natalie's age, the result is 80. Write and solve a system of equations to find how old Fred and
Natalie are
Fred is
years old. Natalie is
years old.
Paige is a graphic designer who makes logos for companies. She makes a design for a logo, which is in the shape of a square. The design of this logo is drawn on the coordinate plane as square ABCD. She then dilates this logo by a scale factor of 2, forming square A'B'C'D'. She realizes that she needs a much bigger design and so further dilates this transformed square by a scale factor of 3 to form A"B"C"D". What are the coordinates of vertex A' and vertex C"?
Answer:
c
Step-by-step explanation:
c because trust me i did it before im in 10th grade now
[8-(-12)]÷(2x-2)-(-8)
Answer:
3
Step-by-step explanation:
Jessica is selling books during the summer to earn money for college. She
earns a commission on
each sale but has to pay for her own expenses.
After a month of driving from neighborhood to neighborhood and walking
door-to-door, she figures out that her weekly earnings are approximately a
linear function of the number of doors she knocks on.
She writes the equation of the function like this: E(X) = 10x - 30, where x is the
number of doors she knocks on during the week and E(x) is her earnings for
the week in dollars.
Which of the following are reasonable interpretations of the y-intercept of
Jessica's function?
Check all that apply.
A. She can earn $10 per week even if she does not knock on any
doors.
B. She will lose $10 per week if she does not knock on any doors.
C. If she does not knock on any doors at all during the week, she will
lose $30.
D. Her expenses are $30 per week.
(20,-6)(6,5) find the slope
what is the length of the diagnal of the rectangle- iready
Answer:the what:0
Step-by-step explanation:
For which equations is 8 a solution? Select the four correct answers.
x + 6 = 2
x + 2 = 10
x minus 4 = 4
x minus 2 = 10
2 x = 4
3 x = 24
StartFraction x Over 2 EndFraction = 16
StartFraction x Over 8 EndFraction = 1
Answer:
The answers include
x + 2 =10
x - 4 = 4
3x = 24
Start Fraction x Over 8 End Fraction = 1
Step-by-step explanation:
x + 2 = 10; 8 + 2 = 10
x - 4 = 4; 8 - 4 = 4
3x = 24; 3(8) = 24
Start Fraction x Over 8 End Fraction = 1; 8/8 = 1
Equations with solution x = 8 are
x + 2 = 10,
x minus 4 = 4,
3x = 24,
Start Fraction x Over 8 End Fraction = 1
What is equation?An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Given equations
x + 6 = 2
⇒ x = 2-6
⇒ x = -4
x + 2 = 10
⇒ x = 10 - 2
⇒ x = 8
x minus 4 = 4
x - 4 = 4
⇒ x = 4 + 4
⇒ x = 8
x minus 2 = 10
x -2 = 10
⇒ x = 10+2
⇒ x = 12
2x = 4
⇒ x = 4/2
⇒ x = 2
3x = 24
⇒ x = 24/3
⇒ x = 8
Start Fraction x Over 2 End Fraction = 16
x/2 = 16
⇒ x = 2(16)
⇒ x = 32
Start Fraction x Over 8 End Fraction = 1
x/8 = 1
⇒ x = 8(1)
⇒ x = 8
Hence, equations
x + 2 = 10,
x minus 4 = 4,
3x = 24,
Start Fraction x Over 8 End Fraction = 1
have 8 as solution.
Learn more about equation here:
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