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3 years ago

14

Jim baked 31 cookies. His family ate m of them. Using m, write an expression for the number of cookies that remained.

2 answers:

kakasveta [241]3 years ago

8 0

Answer:

31 - m

Step-by-step explanation:

Expressions don't have the equal sign, equations do.

Serggg [28]3 years ago

4 0

Answer:

31-m

Step-by-step explanation:

Hope this helps!

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Please help me answer questions 48 and 48 with the working out please. This is very urgent and i’m giving out 8 points not 5!!!

mariarad [96]

Answer: 65°

<u>Step-by-step explanation:</u>

$E=w(t_f-t_o)\\\\E: 10\ cubic\ feet\times \dfrac{1000\ BTU}{1\ cubic\ foot}\times \ 60\%\quad \rightarrow \quad E=6000\ BTU\\\\\\w:50\ gallons\times \dfrac{8\ pounds}{1\ gallon}\quad \rightarrow \quad w=400\ pounds\\\\\\\\E=w(t_f-t_o)\\\\6000=400(t_f-50)\\\\\dfrac{6000}{400}=\dfrac{400(t_f-50)}{400}\\\\.\quad 15=t_f-50\\\\\\.\quad 15=t_f-50\\.\ \underline{+50}\quad \underline{\quad \ +50}\\.\quad 65=t_f$

4 0

2 years ago

Y+2 = -3(x – 4)<br> Complete the missing value in the solution to the equation. <br><br> (?, -2)

ss7ja [257]

Answer:

The missing value in the solution to

the equation will be:

$x=4$

Step-by-step explanation:

Given the equation

$y+2\:=-3\left(x\:-\:4\right)$

As the value of y = -2 is given.

so substituting the value y = -2 in the equation to find the missing value

$\left(-2\right)+2\:=-3\left(x\:-\:4\right)$

switch the sides

$-3\left(x-4\right)=\left(-2\right)+2$

$\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a$

$-3\left(x-4\right)=-2+2$

$-3\left(x-4\right)=0$

$\mathrm{Divide\:both\:sides\:by\:}-3$

$\frac{-3\left(x-4\right)}{-3}=\frac{0}{-3}$

$x-4=0$

$x=4$

Therefore, the missing value in the solution to

the equation will be:

$x=4$

4 0

2 years ago

Multiply out -6(2x-8)

Aleksandr-060686 [28]

It would be :
-12 + 48

hope this helps you

6 0

2 years ago

Simplify the expression by adding or subtracting the linear expressions. 14x + 21 + 7x + 10 *

Yuki888 [10]

Answer:

Step-by-step explanation:

14x + 21 + 7x + 10 * 52x +42x + 10 +21x + 31 +35x + 17

If you mean so, then this is the answer

639x+79

6 0

2 years ago

What is (24-6)+19÷2

Gemiola [76]

27.5

Follow the order of operations and start by solving the parentheses.

18 + 19 / 2

Now, do the division.

18 + 9.5

Finally, solve the addition.

27.5

3 0

2 years ago