3 years ago

Someone solve these answers correct me if I’m wrong

Mathematics

1 answer:

solmaris [256]3 years ago

3 0

A. Correct! Good job

B. Incorrect. x=4

C. X=8

D.X=6

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Use the number line below, where RS equals 3 y plus 2 , ST equals 2 y plus 7 , and RT equals 10 y minus 11 .

docker41 [41]

3y + 2 + 2y + 7 = 10y - 11
5y + 9 = 10y - 11
20 = 5y
4 = y

RS = 14
ST = 15
RT = 29

4 0

4 years ago

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A company finds it can produce 15 heaters for $ 4050â€‹, while producing 25 heaters costs $ 6550. Express theâ€‹ cost, y, as a l

amid [387]

Answer:

y=250x+300

Step-by-step explanation:

Let x be the number of heaters and y be the total cost.

We need to find the linear function for y in terms of x.

It is given that company can produce 15 heaters for $4050 and 25 heaters costs $ 6550.

It means the line passes through the points (15,4050) and (25,6550).

If a line passes through two points $(x_1,y_1)$ and $(x_2,y_2)$ , then the equation of line is

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

The equation of line is

$y-4050=\frac{6550-4050}{25-15}(x-15)$

$y-4050=\frac{2500}{10}(x-15)$

$y-4050=250(x-15)$

$y-4050=250x-3750$

Add 4050 on both sides.

$y-4050+4050=250x-3750+4050$

$y=250x+300$

Therefore, the required linear function is y=250x+300.

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3 years ago

A jar contains 50 coins, all either 2 cents or 5 cents. The total value of the coins is $1.87.

trapecia [35]

Answer:

there would be 21 cents

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3 years ago

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A line passes through the point (4, -6) and has a slope of -3/4. Which is the equation of the line?

Kazeer [188]

Answer: A

Hope this help :)

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4 years ago

Hi can someone please help me with me with this equation? Worth 30 points! And will give brainliest

Gre4nikov [31]

Answer:

y = .1x + .16

↓

y= .1x + .2

hope it helps

Step-by-step explanation:

y = bx + a

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3 years ago