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Marizza181 [45]

3 years ago

12

If each time a student gets a good grade they get points but every bad point can

1 answer:

Olin [163]3 years ago

6 0

Answer:

They get 4 good points!

Step-by-step explanation:

21-17= 4:)

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2x + 2y = -2<br> 3x -2y = 12

PIT_PIT [208]

Answer:

$2x + 2y = - 2 \\ 3x - 2y = 12 \\ now \: add \: both \: equations \\ 2x + 2y + (3x - 2y) = - 2 + 12 \\ 2x + 2y + 3x - 2y = 10 \\ 5x = 10 \\ \frac{5x}{5} = \frac{10}{5} \\ x = 2 \\ \\ 2x + 2y = - 2 \\ 2 \times 2 + 2y = - 2 \\ 4 + 2y = - 2 \\ 2y = - 2 - 4 \\ 2y = - 6 \\ \frac{2y}{2} = \frac{ - 6}{2} \\ y = - 3 \\ now \: lets \: check \: whether \: this \: equation \: correct \\ 3x - 2y = 12 \\ 3 \times 2 - 2 \times - 3 = 12 \\ 6 + 6 = 12 \\ 12 = 12 \\ yes \: its \: correct$

4 0

3 years ago

What is the equation for the (graph) line?

tino4ka555 [31]

Answer:

y=mx+b

Step-by-step explanation:

this is the equation of any line in slope intercept form.

8 0

3 years ago

I NEED HELP ASAP PLS!!! Michael is totaling the concession stand sales after a high school football game. He uses the expression

Gennadij [26K]

Answer:

4154715Step-by-step explanation:

3 0

3 years ago

7. Find the values of x and y<br> 60°<br> y у<br> 7<br> 30°<br> Х

VARVARA [1.3K]

Answer: x = 12.124

y = 14

Step-by-step explanation:

In a 30, 60, 90 triangle, the side opposite the 30° angle is half the length of the hypotenuse. So y = 14.

7/sin(30) = 14

You can use the Pythagorean Theorem to calculate x.

14^2= 7^2 + x^2

196 - 49 = x^2

147 = x^2

sr/rt 147 = sq/rt x^2

12.124 = x

Or with trig

7/tan(30)= 12.124

6 0

3 years ago

Can someone help me with this please

Dmitriy789 [7]

for 7

Yes it is right cuz 16 is the double of 8 and even the price if doubled up so the price is right

for 8

Apply the formula

$2\sqrt{\frac{Area}{\pi } }$

$2\sqrt{\frac{154}{\pi } }$

$2\sqrt{49.02}$

$2(7)$

$14$

the diameter is 14

Hope this helps :)

7 0

3 years ago