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2 years ago

The difference of seven times a number and four is eighty. Find the number.

Mathematics

1 answer:

Taya2010 [7]2 years ago

7 0

Answer: 12

Step-by-step explanation:

difference = subtraction

and = addition

times = multiplication

Therefore,

7x - 4 = 80

7x = 84

x = 12

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Use distributive property to solve the equation 5( 2x +4) =30 A. x-2 B. x=1 c. =10

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Answer:

Step-by-step explanation:

5(2x+4)=30

10x+20=30

10x=10

x=1

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3 years ago

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3 years ago

Suppose that the function g is defined, for all real numbers, as follows.

svetoff [14.1K]

Answer:

a) g(-2) = 0

b) g(-1) =1

c) g(4) = 2

Step-by-step explanation:

Given data

$g(x) = \frac{-1}{4x+1} if x < -2$

$g(x) = - (x+1)^{2} +1 if -2\leq x\leq 2$

$g(x) = 2 if x >2$

Step( i ):-

$g(x) = - (x+1)^{2} +1 if -2\leq x\leq 2$

put x = -2

$g(-2) = -(-2+1)^{2} +1 = -(-1)^{2}+1 = -1+1 =0$

g(-2) = 0

Step(ii):-

$g(x) = - (x+1)^{2} +1 if -2\leq x\leq 2$

Put x = -1

$g(-1) = -(-1+1)^{2} +1 = -(0)^{2}+1 = -0+1 =1$

g(-1) =1

Step(iii):-

$g(x) = 2 if x >2$

g(4) = 2

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3 years ago

Tell whether the function shows growth or decay and why. f(x) = 6(1.2)x

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4 years ago