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11Alexandr11 [23.1K]
2 years ago
12

Let f(x) = -8x + 4 and g(x) = 3x2 + 5. Find f(7) + g(7) .

Mathematics
1 answer:
VMariaS [17]2 years ago
6 0

Answer:

-7

Step-by-step explanation:

substitute both x's for 7:

(-8(7)+4)+ (3(7)2+5)

= -54 + 47

= -7

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How can you use multiplication in your everyday life?
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Answer:

On kitchen. Yes. there also we use multiplication. If we are trying to cook something from the recipe website, they tell to add 1 glass of water for 100 gm of rice. But we measure the amount of water based on the quantity of the rice. It’s simple multiplication.

Travelling with your friends. If we are travelling with our friends in a public transport facility like bus or metro, we need to buy multiple tickets. There we need to do multiplication.

Step-by-step explanation:

5 0
3 years ago
Mrs. Smith is creating a rectangular flower bed such that the width is half of the
Brilliant_brown [7]

Answer:

As for this problem, we will first establish that the length of the flower bed be represented as x, the width of the flower bed be represented as x/2 ,and the area of the flower bed be taken as it is since it is given. We then follow the formula for area which is length multiplied to width which is:

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we then substitute them

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now all we need to do is find x first.

34 square feet = x squared / 2

now do a cross multiplication

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then get the square root of both sides

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Since x is equal to the length of the flower bed, all we have to do to get the width of it is to divide it by 2. So...

W = x/2

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W = 4.123 feet

And since the problem asked it to find the width of the flower bed to the nearest tenth of a foot, the answer would be 4.1 ft.

6 0
3 years ago
Sally rents a life jacket for a one-time fee of $5. She then rents a canoe for $15 per hour. Write an expression that represents
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Answer:

3.00/8

Step-by-step explanation:

because u simplify 15/5 and u get 3

4 0
3 years ago
Jim decided to go for a drive in his car. He started out at 0 miles per hour(mph). He then accelerated 20 mph down his street. T
sleet_krkn [62]

Answer:

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Step-by-step explanation:


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3 years ago
If (-3)^-5=1/x, what is the value of x?<br><br><br><br> options are in the photo
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Answer:

X= -243

Used Math.way

4 1
3 years ago
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