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s344n2d4d5 [400]
3 years ago
10

Solve the system of equations using the addition method.

Mathematics
2 answers:
stepladder [879]3 years ago
8 0

Answer:

A) 5x - 2y = 12

B) 3x + 2y = 36  Adding both equations eliminates "y"

8x = 48

x = 6   Putting x=6 into equation B we get

3*6 + 2y = 36

2y = 18

y = 9

Step-by-step explanation:

Vlad1618 [11]3 years ago
5 0

5x-2y=12 eq1

3x+2y=36 eq2

8x=48

x=6

X iS 6

substitute X S6 in equation 2

3 into 6 + 2 Y is equal to 36

18 + 2 Y is equal to 36

Y is equal to 9

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Four points, E, F, G, and H lie on the coordinate plane. Of the choices given, which two points have the longest
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Let e f (x) = x2 – 2x - 4 What is the average rate of change for the quadratic function from X = -1 tox to x = 42 Enter your ans
sammy [17]

Answer:

The average rate of change of the given function

A(x) =  1

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given function f(x) = x² - 2x -4

And given that x = a = -1 and  x=b = 4

The average rate of change of the given function

A(x) = \frac{f(b)-f(a)}{b-a}

<u><em>Step(ii):-</em></u>

f(x) = x² - 2x -4

f(-1) = (-1)² - 2(-1) -4 = 1+2-4 = -1

f(4) = 4² -2(4) -4 = 16 -12 = 4

The average rate of change of the given function

A(x) = \frac{f(b)-f(a)}{b-a}

A(x) = \frac{4-(-1)}{4-(-1)} = \frac{5}{5} = 1

<u><em>final answer:-</em></u>

The average rate of change of the given function

A(x) =  1

5 0
3 years ago
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What is the missing number ?? /6 =25/30
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2 years ago
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Calculate the surface area of a solid box in the shape of a cube with side length 6cm.
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Answer:

216 cm^2

Step-by-step explanation:

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Each face has side length of 6 cm.

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SA = 6 * 36 cm^2

SA = 216 cm^2

3 0
2 years ago
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