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2 years ago

Need help ASAP both a and b please.

Mathematics

2 answers:

tino4ka555 [31]2 years ago

6 0

Answer:

A) In 4 hours the tempature would both be the same

B) The tempature then would be 3 degreees Fahrenheit

Step-by-step explanation:

SO for the first step just make a list

In my format

x (hour): Coldspit and Frostberg in temperature

1st hour: -4.5 and 15

2nd hour: -2 and 11

3rd hour: 0.5 and 7

4th hour: 3 and 3

Serhud [2]2 years ago

3 0

Answer:

after 52/3 hours

temparature will be at -151/3

Step-by-step explanation:

y = -2.5x - 7

y = -4x + 19

-2.5x - 7 = -4x + 19

4x - 2.5x = 19 + 7

1.5x = 26

3/2x = 26/1

2/3 x 3/2x = 26/1 x 2/3

x = 52/3

y = -4x + 19

y = -4(52/3) + 19

y = -208/3 + 19

y = -208/3 + 19/1

y = -208/3 + 57/3

y = -151/3

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alukav5142 [94]

Answer:

$19.15

Step-by-step explanation:

Equation 1: 8.50+4.25+4.25= 17.00 (price of the popcorn and drinks)

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2 years ago

Two times x is 8 more than y. The sum of x and two times y is 14. Write two equations and graph to find the value of y.

Sauron [17]

Option B: $y=4$ is the value of y

Explanation:

It is given that "Two times x is 8 more than y". Writing it as expression, we have,

$2x=8+y$

It is also given that "The sum of x and two times y is 14". Writing it as expression, we have,

$x+2y=14$

To find the value of y, let us solve the two equations using substitution method.

From the equation $2x=8+y$ , let us find the value of x.

$x=\frac{8+y}{2}$

$x=\frac{8}{2} +\frac{y}{2}$

$x=4+\frac{y}{2}$

Now, substituting $x=4+\frac{y}{2}$ in the equation $x+2y=14$ , we get,

$4+\frac{y}{2}+2y=14$

$4+\frac{5y}{2} =14$

$\frac{5 y}{2}=10$

$5y=20$

$y=4$

Thus, the value of y is $y=4$

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3 years ago

Solve for x 4(x+9)= 3(2x - 7)

ElenaW [278]

Answer: X= 57/2

Hope this helps!

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3 years ago

Read 2 more answers

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katen-ka-za [31]

Answer:

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Step-by-step explanation:

To find this, simply solve for the parenthesis as if it were a variable of its own. This will allow you to see exactly what is missing.

8x - (x - 20) = 2x - (_______)

8x - x + 20 = 2x - (_______)

7x + 20 = 2x - (_______)

5x + 20 = - (_______)

-5x - 20 = (_______)

So the answer for the parenthesis is -5x - 20

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3 years ago

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Firdavs [7]

Answer:

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Step-by-step explanation:

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