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monitta
3 years ago
9

Evaluate -2x2 y, if x = -3 and y = -1

Mathematics
1 answer:
Gre4nikov [31]3 years ago
6 0
The answer is -12
these are the steps on how to find that 
-2x2y
-2(-3)2(y)
6 times -2
-12
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Solve the equation for y.<br><br> 6y+x=8
iVinArrow [24]

Answer:

The correct answer is \bold{y = -\frac{1}{6}x+\frac{4}{3}}.

Step-by-step explanation:

We want to solve for y in the given equation. We can do this by rearranging the equation and using operational techniques to simplify.

6y + x = 8 \ $\tex Subtract x from both sides of the equation.

6y + x - x = 8 - x \ $\tex Carry out the operation.

6y = 8 - x \ $\tex Rearrange so the equation lists the variables first and the constants second.

6y = -x + 8 \ $\tex Create a coefficient for the x-variable (this is -1).

6y = -1x + 8 \ $\tex Divide by 6 on both sides of the equation in order to isolate the y-variable.

\frac{6y}{6}=\frac{-1x}{6} + \frac{8}{6} \ $\tex Carry out this operation by simplifying the fractions and dividing out the operations accordingly.

y = -\frac{1}{6}x+\frac{4}{3} \ $\tex Be sure to verify that all fractions and terms are simplified as far as they can be and that the equation is written in proper syntax.

Because we have the <em>y</em>-variable isolated from the rest of the equation, we are done!

6 0
2 years ago
Convert the ratio 56: 80 to a percentage
zysi [14]
Change the ratio into a fraction

56:80  is the same as 56/80

Divide, make it a decimal

56/80 = 0.7

0.7 = 7/10 or 70/100

70/100 = 70%

70% is your answer

hope this helps
8 0
3 years ago
Cathleen ran a total of 16 miles. She ran exactly 2 2/3 miles each day. How many days did it take her to run 16 miles
kirill [66]
It took her 6 days. 2 and 2/3 times 6 equals 16
6 0
3 years ago
Calculate the number of hours in 7/2 days.
PtichkaEL [24]
7/2 can be = to 3 and 1/2 
1 day is = to 24 hours
3 1/2 times 24 = 84 hours
4 0
3 years ago
Read 2 more answers
Yoshi is painting a large wall in the park. He measures the wall and finds that the dimensions are 4 m by 20 m. Yoshi has a can
-BARSIC- [3]

No. The area of a square/rectangle is length * height, and 4 * 20 is 80m^2. Because Yoshi has a can of paint that can cover 81m^2, and 81m^2 > 80m^2, Yoshi does NOT need to buy more paint.

8 0
3 years ago
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