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Yanka [14]
3 years ago
8

The polygons in each pair are similar. Find the missing side length / first one has 4 &x and second one has 12&18

Mathematics
1 answer:
sergiy2304 [10]3 years ago
4 0

Answer:

x = 6

Step-by-step explanation:

To find the missing side, write a proportion using side lengths from each similar shape. A proportion is an equation that sets equal two ratios.

\frac{4}{12}=\frac{x}{18}

Find x by cross multiplying numerator and denominator of each fraction.

4(18) = 12x

72 = 12x

6 = x

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Answer:

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3 years ago
Could someone please help and explain this to me
Lelu [443]

Answer:

Step-by-step explanation:

Four

Start by trying to understand what f(x) means. First of all it is the same thing as y in the equation given in question 4. It is a shorthand that tells you that you put an x in wherever you see an x on the right.

More important, it tells you what to put in for x on the right.

f(z) would tell you to put z in for x anywhere there is an x on the right.

f(z)=2z+1. It is just a shorthand to tell you what to do on the right.

f(2) means put a 2 in for the x on the right. Read all of this carefully. You need to know it.

f(2) = 2(2) + 1

f(2) = 4 + 1

f(2) = 5

=================

Five

f(x) = -x - 5            The minus 4 is not going to change what you do.

f(-4) = -(-4) - 5        Wherever you see an x you put in a minus 4

f(-4) = 4 - 5

f(-4) = - 1

======================

Just so you know, consider a more complicated example

f(x) = 20x^3 + 7x^2 + 4x + 19

Where ever you see an x put in 2

f(2) = 20*(2^3) + 7*(2^2) + 4(2) + 19

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f(2) = 215

Note x can be anything the question tells you it is.

f(5) means put a 5 in for every x.

8 0
3 years ago
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Answer:

C

Step-by-step explanation:

C because you multiply the nimbers and then divid.

3 0
3 years ago
Eight more than four times a number is -12 eauation
Allisa [31]
4x + 8 = -12 is the equation for this statement
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