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3 years ago

Given the functions f(x) = 7x + 13 and g(x) = x2 + 2, which of the following functions represents f[g(x)] correctly?

Mathematics

1 answer:

ziro4ka [17]3 years ago

4 0

Answer:

f[g(x)] = 7x2+27

Step-by-step explanation:

This represents the function of f[g(x)] because it replaces the x in f(x) with g(x)

f[g(x)] = 7(x2+2)+13

f[g(x)] = 7x2+14+13

f[g(x)] = 7x2 +27

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What is the answer ???????

Neporo4naja [7]

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2 years ago

The depth of water in a reservoir increases from 14m to 15.75m. Work out the percentage increase.

jasenka [17]

Answer:

It was a 12.5% water gain

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3 years ago

I need help i dont understand this

mel-nik [20]

140 tickets sold at the door

Step by Step Explanation:

x = tickets sold in advance
y = tickets sold at the door

We use the formula ax+by=c and a+b=c

x + y = 514
17x + 20y = 9158

y = 514 - x
17x + 20(514 - x)
17x + 10,280 - 20x = 9,158
-3x + 10,280 = 9,158
-3x = -11222
x = 374

This is for tickets sold in advance so we need to find y

374 + y = 514
y = 140

140 tickets were sold at the door

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3 years ago

What is 4/7 multiplied by 13/9

nevsk [136]

Answer:

52/63

Step-by-step explanation:

Here, we want to multiply two fractions

we have this as;

4/7 * 13/9

= 52/63

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3 years ago

1. Do you the following side lengths form a right triangle?2. Which measurement is closest to the value of X in centimeters?

koban [17]

Answer:

Part 1:

Yes, the side lengths form a right triangle.

Part 2:

Option d 37.1 cm

Explanation:

We need to use the pythagorean theorem.

In part 1, if the 3 side lengths are a right triangle, then, they must verify:

$7.5^2=4.5^2+6^2$

By the theorem. Then:

$\begin{gathered} 7.5^2=56.25 \\ 4.5^2+6^2=20.25+36=56.25 \end{gathered}$

They're equal, then the lengths correspond to a right triangle.

For part 2, we need to use again the theorem. In this case:

$\begin{gathered} 12^2+x^2=39^2 \\ x=\sqrt{1521-144} \\ x=\sqrt{1377} \\ x\approx37.1cm \end{gathered}$

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1 year ago