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Sergio [31]
3 years ago
9

Can somebody help me? here are the two questions, thanks in advance!

Mathematics
1 answer:
Elden [556K]3 years ago
6 0
Take one step at a time. First, let's evaluate g(1):

g(1) = 2*1-3 = -1

now plug this into f: 

f(-1) = 5*-1 = -5. So the second answer is the right one.
-----------------------
Same approach for q 12, only now we have no value to fill in for x. What's confusing here is that the x's of f and g should not be mixed up. For the sake of clarity let's rewrite f as

f(z) = 5z + 9.

Now we'll write 3-4x everywhere we find a z. Ah, only one place.

f(g(x)) = 5(3-4x) + 9 = 15 - 20x + 9 = 24 - 20x


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joel is laying pipe for a sprinkler system before he plants his lawn . the lawn is a rectangle, 15 feet long and 8 feet wide. he
Nadya [2.5K]

Answer:

The length of the pipe = 17 feet

Step-by-step explanation:

length = 15 feet

width = 8 feet

Pythagorean theorem,

(diagonal)² = (length)² +(width)²            {all angles of rectangle are 90°}

                   = 15² + 8²

                   = 225 + 64  = 289

diagonal    = √289 = √ 17 * 17

                   = 17 feet

7 0
3 years ago
When josh borrowed money, he originally agreed to repay the loan by making three equal payments of $1500, with a payment due now
Yuliya22 [10]

Answer:

5 years

Step-by-step explanation:

Principal Amount to be paid=$4500

Interest rate = 2%

Number if Times compounded= number of years

Number of years = x

Among total= $5010

A= p(1+r/n)^(nt)

But n= t =x

A= p(1+r/x)^(x²)

5010=4500(1+0.02/x)^(x²)

5010/4500 = (1+0.02/x)^(x²)

1.11333=( 1+0.02/x)^(x²)

Using trial and error method the number of years maximum to give approximately $5010 is 5 years

8 0
3 years ago
A cylinder has a volume of 2167 cubic feet and a height of 18 feet What is the area of the base?
natita [175]

Answer:

120.39ft²

Step-by-step explanation:

Hopefully that helps :)

6 0
2 years ago
Please help, i’m so behind on my work :(( image attached
gregori [183]

Answer:

5/8

Step-by-step explanation:

28x + 4 can be factorised because 28 is a multiple of 4

so it can become

4(7x+1)

35x + 5 can be also factorised because 35 is a multiple of 5

5(7x+1)

we can now rewrite the expression as

6/4(7x+1) * 5(7x+1)/12

we can “eliminate” the two 7x+1 and simplify 6 with 12

so it remains

1/4 * 5/2 = 5/8

8 0
3 years ago
G(a) = a + 2. Find f(-7).
anastassius [24]

Answer:

Step-by-step explanation:

g(-7) = -7 + 2 = -5

6 0
3 years ago
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