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Alecsey [184]
3 years ago
14

I need help with 8,9 and 10

Mathematics
1 answer:
rodikova [14]3 years ago
8 0

Answer:

Answer 8: D

Answer 9: A

Step-by-step explanation:

8D: 5(12)/4-1=14

9A: Plug in -5(1)+2 = -3, so the point is (1,-3)

Question 10 is not visible

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Solve each system by graphing x-2y=6, x+2y=2
Bond [772]
I hope this helps you

4 0
3 years ago
PLEASE HELP ME!!!<br> WILL GIVE YOU A FOLLOW
Dvinal [7]
4/10^2 = 0.04
which is equal to:
4x10^-2
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And as the digit is a 4 you multiply 10^-2 by 4
5 0
1 year ago
If 729 to 3 = 9 what is 512 to 3 = ?
hichkok12 [17]
9^3 is 729 so x^3 = 512 and you find it to be 8
3 0
3 years ago
Need an answer, please need an answer, please​
trasher [3.6K]

Answer:

Step-by-step explanation:

Area = 192 m²

Perimeter= 56 m

Width = x m

Perimeter = 56

2*(length + width) = 56

Divide the equation by 2

l + x = 56/2

l + x = 28

    l = 28 - x

Area = 192 m²

l * w = 192

(28 - x)*x = 192

28x - x*x = 192

0 = 192 - 28x + x²

x² - 28x + 192 = 0

2) Equation is a quadratic equation. The roots of this equation will the dimensions of the rectangular plot.

3) The roots represent the width and length  of the rectangle.

x² - 28x +192 = 0

Sum = -28

Product =192

Factors =  -16 , -12   {-16 +(-12) = -28  & (-12)*(-16) = 192}

x² - 28x + 192 = 0

x² - 12x - 16x + (-16)*(-12) = 0

x(x  -12) - 16(x - 12) = 0

(x - 12)(x -16) =0

x -12 = 0     ; x - 16 = 0

x = 12  ; x = 16

x = 12 ,16

4) Sum of the roots = 12 + 16 = 28

Sum of the roots = half of the perimeter

5) Product of the roots = 12*16 = 192 =  area of the rectangle.

6 0
3 years ago
8 1/2 is an example of an improper fraction.<br> true or false?
vivado [14]
It is false!!! 8 1/2 is a mixed number!! when they have a whole number in front of it such as 8, or etc. and also. fraction... it's. mixed fraction! an improper fraction is like 57/4!! a big number over a smaller number!
7 0
3 years ago
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