Write the system of equations
C + V = 40
4C + 6V = 180

Answers

Answer 1

Answer:

c=30

v=10

30+10=40

4*30=120

6*10=60

120+60=180


Related Questions

What is the constant of proportionality of the following equation?
B = 1.25C

Answers

Answer:

The answer is 122

Step-by-step explanation: 0.25 is the constant proportionality in this equation .

let meh know if you need more answers ✨✨

Answer:

1222

Step-by-step explanation:

Logan is taking a loan out to buy a $4000 right for his wife. He has two finance options listed below. Which should he choose? Option a- a five year loan with a %7 interest rate compounded quarterly l. Option b- an eight year loan with a 5.5% interest rate compounded annually

Answers

Answer:

The most convenient option for Logan is A, since he will pay a lower amount than if he chose option B.

Step-by-step explanation:

Given that Logan is taking a loan out to buy a $ 4000 right for his wife, and he has two finance options, Option A, which gives a five year loan with a% 7 interest rate compounded quarterly, and Option B, which gives an eight year loan with a 5.5% interest rate compounded annually, to determine which option should be chosen, the following calculation must be performed:

Option A:

X = 4,000 (1 + 0.07 / 3) ^ 5x3

X = 5,653.49

Option B:

X = 4,000 (1 + 5.5 / 1) ^ 8x1

X = 6,138.75

Thus, the most convenient option for Logan is A, since he will pay a lower amount than if he chose option B.

please be as soon as possible.

Answers

Answer:

Really?

Step-by-step explanation:

Answer:

Ik

Step-by-step explanation:

Find the product. Express your answer as a mixed number in simplest form.

2 1/6 × 4 1/2

Answers

Answer: 1 1/2, 3/2, or 1.5

Step-by-step explanation: Convert expression into unproper fractions, 13/6, and 9/2. Then by changing 13/6 into a denominator with 2, you multiply and it equals 1 1/2.


For every 3 tickets you sell your friend sells 4. You sell a total of 12 tickets. How many does your friend sell? Complete
problem
You
3
9
12
Friend
4
8
Your friend sells tickets

Answers

Answer:

16

Step-by-step explanation:

If 3 x 4 = 12 then you need to do the same to the number 4 so 4 x 4 =16

Answer:

3 : 4 :: 12 : x proportion 3x = 48 product means/extremes Can you solve for x and answer?

(If not look below.)

Step-by-step explanation:

ratio: 3:4

so divide 12 by 3=4

and multiply 4 by 4=16

your friend sells 16 tickets

ratio is now 12:16

4 : 3 = 12 : x

x = 12 * 4  / 3  = 16

70 - 4a for a = 8 ??

Answers

Answer:

38

Step-by-step explanation:

Just substitute it. The equation becomes

70 - 4(8)

70 - 32 = 38

Answer:

38

Step-by-step explanation:

70 - 4a =

70 - 4*8=

70 - 32= 38

Will give 100 points;

In the U.S., from 2004-2015, the correlation coefficient for the relationship between the size of a cell phone data plan, x, and the number of text messages sent, y, is r =0.97. Describe what this means about the relationship between the data plan size and the number of text messages sent in the U.S.

Answer options:
- There is no correlation between the size of the data plan and the number of text messages in the US.
- There is a weak positive linear correlation between the size of a cell phone data plan and the number of text messages sent.
- There is a strong negative linear correlation between the size of a cell phone data plan and the number of text messages sent.
- There is a strong positive linear correlation between the size of a cell phone data plan and the number of text messages sent.

I'd appreciate if you included an explanation, but an answer is fine.

Answers

Answer:

D. There is a strong positive linear correlation between the size of a cell phone data plan and the number of text messages sent.

Step-by-step explanation:

We have r = 0.97

Correlation coefficients whose magnitude are between 0.9 and 1.0 indicate variables which can be considered very highly correlated (as per below table)r = (0.9, 1.0) very highly correlated. r = (0.7, 0.9)  highly correlated. r = (0.5, 0.7)  moderately correlated. r = (0.3, 0.5)  low correlation. r = (0, 0.3)  little to no correlation.

Same applies to negative side

Correct choice is

D. There is a strong positive linear correlation between the size of a cell phone data plan and the number of text messages sent.

To explain it in very simple way, consider a linear equation:

y = mx + b

Number of text messages is the linear function of the data plan. r = 0.97 shows this relationship is almost a perfect line with positive slope.

- There is a strong positive linear correlation between the size of a cell phone data plan and the number of text messages sent is your answer

PLEASE, I REALLY NEED YOUR HELP!!
For each of the figures, write an Absolute Value equation to satisfy the given solution set.

Answers

Answer:

|x-5|=2

Step-by-step explanation:

1- Find the mid value between the given numbers 3 and 7

(3+7)/2= 10/2 = 5

2- Find the difference btween the mid value (5) and any of the two given numbers (3 or 7). Use the absolute value for the difference.

|5-3|= 2 or |7-5|=2

3- Arrange the absolute equation like this:

|x-mid value from step 1|= absolute difference from step 2

|x-5|=2

4- Double check the answer with the given values 3 and 7 using our equation |x-5|=2

|3-5|=2 correct

|7-5|=2 correct

23,716 ÷ 74 =
help me ;.)

Answers

Answer: 320.48

Step-by-step explanation: Calculator work (:

Answer:

320.486486

Step-by-step explanation:

Not entirely sure if this is correct.

A small town currently has a population of 15,000. Each year the population decreases by 2.25%. What will the population be in 8 years

Answers

Answer: 12,503 people

Step-by-step explanation:

This is an exponential decrease so to find the population in 8 years you have to use a future value formula:

= Amount * (1 + rate) ^ number of years

= 15,000 ( 1 + (-2.25%)) ⁸

= 15,000 * (1 - 2.25%)⁸

= 12,503.32

= 12,503 people

How can you determine if the given lines are perpendicular?​

Answers

Answer:

Step-by-step explanation:

Two lines are perpendicular if and only if the product of their slopes is . In other words, the slope of a line that is perpendicular to a given line is the negative reciprocal of that slope. Thus, for a line with a given slope of 3, the line perpendicular to that slope must be the negative reciprocal of 3, or .

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

For brainiest:):):):):):):):)

Answers

Answer:

153.86 and 75.36

Step-by-step explanation:

The first circle (orange one) has a circumference of 153.86 while the other circle has a circumference of 75.36.

what's 1+1!!!!!! hdhddvsgsgdvvdndbdvdbdbdbdvdbddgdbdvdhdvd pleaseeee​

Answers

Answer:

2

Step-by-step explanation:

okay so imagine this, you have one cookie and you get another cookie. how many cookies do you have now? 2

Answer:

hmmmmm....

it should be 2 but i'm not sure cuz this question was pretty hard.

A jeweler has several boxes of earrings to ship to a store. Each box is a cube with a side length of 5 centimeters. The jeweler packs the boxes in a shipping container. The filled container has 4 layers, where each layer contains 7 rows and 10 columns of boxes. What is the volume of the shipping container?

Answers

Answer: [tex]35,000\ cm^3[/tex]

Step-by-step explanation:

Given

The earring box has a volume of [tex]a=5\ cm[/tex]

It is packed and loaded in the container which has 4 layers and each layer has  7 rows and 10 columns

We can say that each layer can hold [tex]7\times 10=70\ \text{boxes}[/tex]

The volume of each earring box is

[tex]V_o=a^3=5^3\\V_o=125\ cm^3[/tex]

Four layers can hold [tex]4\times 70=280\ \text{boxes}[/tex]

the container can hold 280 boxes

[tex]\therefore \text{Volume of container is}\ V=280V_o\\\Rightarrow V=280\times 125=35000\ cm^3[/tex]

Can someone help me with this. Will Mark brainliest.

Answers

Answer: ur answer would be (1,5)

Step-by-step explanation:

Hope this helps! Have a good day! :)

There's 2 questions here that need to be answered.


Find the value of each variable.

Answers

Answer:

5. x= 13 y= 18.4

6.

Step-by-step explanation:

question 5:

tan45=x/13

multiply both sides by 13 to get x by its self.

end up with 13×tan45 so put that in the calculator to get x

then you do cos45= 13/y

multiply by y on both sides.

end up with y×cos45=13

divide the cos45 by both sides

put 13/cos45 to get y

question 6:

sin30=4/x

multiply x on both sides

end with x×sin30 =4

divide sin30 on both sides

put 4/sin30 in a calculator to get x

same thing again but with tan30 ahaha

find volume of sqaure pyramid​

Answers

Answer:

volume of a pyramid is base area x height

base is a square

Area of a square is L²

L²=5²

L²=25cm²

Height is 5cm

vol of a pyramid =25cm²x5cm

=75cm³.

The height is cm5 that is your answer

factor by grouping
3n^3 - 12n^2 + 2n - 8
(show the work pls..)

Answers

Answer:

The answer will be ( n - 4 ) ( 3n² + 2 ).

Step-by-step explanation:

1) Factor out common terms in the first two terms, then in the last two terms.

[tex] {3n}^{2} (n - 4) + 2(n - 4)[/tex]

2) Factor out the common term n - 4.

[tex](n - 4)( {3n}^{2} + 2)[/tex]

Therefor, the answer is ( n - 4 ) ( 3n² + 2 ).

what is the relative frequency of 45

Answers

Answer:

The relative frequency of 45 is 1

Step-by-step explanation:

help plz if u tell ill give u 5 stars and a like plz hurry plz

Answers

The answer is D = x+2y= 10
-4x-y=2

A plastic box has the dimensions shown. 2 square pyramids are stacked on their bases. The bases are 8 centimeters by 8 centimeters and the height of each pyramid is 7.5 centimeters. What is the volume of the box? 160 cm3 320 cm3 480 cm3 960 cm3

Answers

Answer:

the answer is 320

Step-by-step explanation:

just did the instruction

Answer:

320

Step-by-step explanation:

To find the volume, you multiply length times width times height, which is 3x1x2, which equals six. Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.

Wow look at my full percent battery

10 minutes to answer

Write an expression equivalent to

4 - (-7)


help

Answers

11 because -7 subtracted by 4 add kore to the 7 so think of it this way -7 is a bad guy and 4 is a bad guy to because its a subtraction so if both bad guys combine you get 11 because a negative with negative makes a positive so its 11

Help please and thankyou :)

Answers

Answer:

1/2

Step-by-step explanation:

As you probably know 10 is double the size/amount of 5, but instead of just putting 2 you would put 1/2. That is because it is a scale factor of a scale drawing, which is not the same size and is supposed to be smaller because you can't draw a house on a paper that would fit it literally ;)

Hope this helps!

CAN SOMEONE HELP ME WITH THIS PLEASE???

Answers

Answer:

Its 2x + 0.

Step-by-step explanation:

This is because, the 2 represents the slope or rate of change and the 0 represents the initial value/y-intercept, since the snow started at 0 inches.

write the coordinates for the center of the hyperbola

Answers

Answer:

(-1 , 2)

Step-by-step explanation:

Citlali was traveling at 60 miles per hour. she has already traveled 120 miles. To get to california which is 360 miles from home, and traveling at the same average speed, how many more hours will it take before he arrives in california?

Answers

Answer:

4 more hours

Step-by-step explanation:

First, you know that Citlali is traveling 60 miles per hour so he travels 60 miles every hour. He has already traveled 120 miles so you subtract 120 from 360 because that is the amount of miles Citlali now has to travel. Then, you know that she travels 60 miles per hour so the equation will be 60x=240. Then, you divide 60 in both sides and get x=4. Therefore, it will take four more hours until he arrives at California.

Hope this helps

Given sinx=1/3, cosy=3/4, and both x and y are in quadrant iv, find cos(x-y) and sin(x+y)

Answers

Answer: [tex]\dfrac{6\sqrt{2}+\sqrt{7}}{12},\ \dfrac{-3-2\sqrt{14}}{12}[/tex]

Step-by-step explanation:

Given

x and y is in the fourth quadrant

[tex]\sin x=-\dfrac{1}{3}\\\\\cos y=\dfrac{3}{4}[/tex]

we know,

[tex]\cos (x-y)=\cos x\cos y+\sin x\sin y\\\sin (x+y)=\sin x\cos y+\cos x\sin y[/tex]

using  [tex]\sin ^2\theta +\cos^2 \theta =1[/tex]

[tex]\Rightarrow \cos x=\dfrac{2\sqrt{2}}{3}\\\\\Rightarrow \sin y=-\dfrac{\sqrt{7}}{4}[/tex]

[tex]\Rightarrow \cos(x-y)=(\dfrac{2\sqrt{2}}{3})\times (\dfrac{3}{4})+(-\dfrac{1}{3})\times (-\dfrac{\sqrt{7}}{4})=\dfrac{6\sqrt{2}+\sqrt{7}}{12}\\\\\\\Rightarrow \sin (x+y)=(-\dfrac{1}{3})\times \dfrac{3}{4}+\dfrac{2\sqrt{2}}{3}\times (\dfrac{-\sqrt{7}}{4})=\dfrac{-3-2\sqrt{14}}{12}[/tex]

A hollow ball is made of rubber that is 2 centimeter thick. The ball has a diameter of 20 centimeters at the outside surface.

What is the exact volume of rubber used to make the ball?
Please explain how to find the volume and i will mark brainliest

Answers

Answer:

628.57CM²

Step-by-step explanation:

20/2=10

VOLUME OF CYLINDER=PIR^2H

22/7*10*10*2=628.57

thought i got the right answer but its saying its wrong. can someone help

Answers

Answer:

3.142 × 4.5 (half of 9) (squared) , 4.5squared = 63.62 = 64m

Can y’all help me quick

Answers

Answer:

It would be around 48 so D

Answer:

D - 48

Step-by-step explanation:

Only Answer Closest... look at where the others are and see where ten is and where the y value would be in the point.

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