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nirvana33 [79]
3 years ago
10

Solve by elimination. 3x+7y=48 5x-7y=-32

Mathematics
1 answer:
bogdanovich [222]3 years ago
5 0

3x + 7y = 48

5x - 7y =-32

8x = 16

 x = 2

3(2) +7y = 48

7y = 42

y = 6

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erastova [34]

Answer:

x= -3

Step-by-step explanation:

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7 0
3 years ago
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When x^3+kx^2-4x+2 is divided by x+2 the remainder is 26 find k?​
Llana [10]

Answer:

  k = 6

Step-by-step explanation:

Using synthetic division, we find the remainder from the division to be ...

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  4k = 24 . . . . subtract 2

  k = 6 . . . . . .  divide by 4

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4 0
3 years ago
Find the length of XY.<br> Imported Asset <br><br> 4<br><br> 8<br><br> 16<br><br> 11.3
kompoz [17]

Answer: 8 (The second option).


Step-by-step explanation:

1. To solve this exercise you draw a line to a point O, this lines will bisect the angle of Z∠60°. Then will obtain two into two right triangles with two angles of 30° at the point Z.

2. The lenght XY will be twice the lengt XO or YO.

3. Let's  calclate XO as following:

sin(30)=\frac{XO}{8}\\XO=4

4. Then, XY is:

XY=2XO\\XY=2*4\\XY=8


7 0
3 years ago
Can some one help me with this question.
antoniya [11.8K]

Area of the small circle = \pirx^{2} = 3.14 x 7x^{2}= 153.86

Area of the big circle = \piRx^{2}=3.14 x 14x^{2}= 615.44

The shaded area = area of the big circle - area of 2 small circle = 615.44-2x153.84≅308

The answer is 308

8 0
3 years ago
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