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3 years ago

12

Evaluate the expression when y = 3 B.) 12y

1 answer:

Archy [21]3 years ago

3 0

12y = 12*3 = 36 ← answer

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We need to find the percentage of 34 out of 40

FrozenT [24]

Answer:

85%

Step-by-step explanation:

So basically you divide 34 by 40. Which is 85%

If this is your grade, good job!

3 0

3 years ago

Amy is eight years older than twice her cousin Alicia’s age. The sum of their ages is less than 32.

Nina [5.8K]

X=8 which is her age
8 is her cousin age
16 is Amy's age and the sum
Is 32

6 0

4 years ago

Read 2 more answers

klasskru [66]

Answer:

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$y=0,\:x=6$

Step-by-step explanation:

Considering the system of the equations

$\begin{bmatrix}2x-7y=12\\ -x+15y=-6\end{bmatrix}$

$\mathrm{Isolate}\:x\:\mathrm{for}\:2x-7y=12$

$2x-7y+7y=12+7y$

$2x=12+7y$

Divide both sides by 2

$\frac{2x}{2}=\frac{12}{2}+\frac{7y}{2}$

$x=\frac{12+7y}{2}$

$\mathrm{Subsititute\:}x=\frac{12+7y}{2}$

$\begin{bmatrix}-\frac{12+7y}{2}+15y=-6\end{bmatrix}$

$-\frac{12+7y}{2}+15y=-6$

$\mathrm{Multiply\:both\:sides\:by\:}2$

$-\frac{12+7y}{2}\cdot \:2+15y\cdot \:2=-6\cdot \:2$

$-\left(12+7y\right)+30y=-12$

$-12+23y=-12$

$-12+23y+12=-12+12$

$23y=0$

$\mathrm{Divide\:both\:sides\:by\:}23$

$\frac{23y}{23}=\frac{0}{23}$

$y=0$

$\mathrm{For\:}x=\frac{12+7y}{2}$

$\mathrm{Subsititute\:}y=0$

$x=\frac{12+7\cdot \:0}{2}$

$x=\frac{12}{2}$

$x=6$

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$y=0,\:x=6$

4 0

4 years ago

Match the given slope (m) and y-intercept (b) with the equation of the line in slope-intercept form.

Allisa [31]

Answer:

y=2x+7

y=4x+7

y=5x

Step-by-step explanation:

substitute the numbers for the variables in the form y=mx+b

7 0

3 years ago

I just want to make sure that this is correct:

JulsSmile [24]

Answer:

yes

Step-by-step explanation:

6 0

3 years ago