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zubka84 [21]
3 years ago
12

What is the value of 2x^-2 y^-2 for x=3 and y =-2

Mathematics
1 answer:
ikadub [295]3 years ago
4 0

Answer:

2.1/9.2^-2

2^-1/9

1/9.2

1/18

Step-by-step explanation:

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Find angle B and angle E
Natali [406]

Answer:

x = 9, Angles are 54°

Step-by-step explanation:

First, we need to find x:

7x-9 = 5x+9

+9 +9

7x = 5x+18

-5x -5x

2x = 18

x = 9

Now, we plug our x value in to find our angles.

5(9) + 9 = 54

Angle B = 54°

7(9) - 9 = 54°

Angle E = 54°

(angles are the same due to AAA property)

6 0
3 years ago
A certain high school has 1,488 students. If you subtract the number of girls from boys you get 78. Let x be the number of boys
Dahasolnce [82]

Answer:

boys = 705

girls = 783

Step-by-step explanation:

We are to find the number of boys and girls in the school

the answer can be determined using simultaneous equation

x = boys

y = girls

y - x = 78  equation 1

y + x  = 1488 equation 2

subtract equation 1 from 2

2x = 1410

x = 1410/2 = 705

Substitute for x in equation 1

y - 705 = 78

y = 705 + 78 = 783

3 0
2 years ago
Divide 2x2+7x-3 by 2x+5. Which expression represents the quotient and remainder
Fiesta28 [93]

Answer:

0

Step-by-step explanation:

7 0
3 years ago
Ok this is stressin me out anyone know this
Levart [38]
X=7.
9x-7y=63
9x-7 x 0=63
9x - 0=63
9x=63
X=7.

Y=-9
9 x 0 -7y=63
8 0
2 years ago
On Monday 1/9 of the enrolled students in a school were absent. There were 4,512 students present how many students are enrolled
tensa zangetsu [6.8K]

Answer:6599 i think

Step-by-step explanation:

5 0
3 years ago
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