3 years ago

What percent of 65 is 13?

Mathematics

2 answers:

Mariana [72]3 years ago

4 0

The answer to the question is is 20%

Karo-lina-s [1.5K]3 years ago

4 0

So you set up your equation, $\frac{x}{100}$ · $\frac{13}{65}$
Cross multiply and get 1300=65x.
Divde both sides by 65, get x= 20
So, 13 is 20% of 65.
Hope this helps

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If f(x) = -3x - 5 and g(x) = 4x - 2, find (f+ g)(x).

Stella [2.4K]

Answer:

$\boxed{\sf x - 7}$

Given:

f(x) = - 3x - 5

g(x) = 4x - 2

To Find:

(f + g)(x)

Step-by-step explanation:

$\sf (f + g)(x) = f(x) + g(x) \\ \\ \sf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = - 3x - 5 + 4x - 2 \\ \\ \sf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 4x - 3x - 5 - 2 \\ \\ \sf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = x - 5 - 2 \\ \\ \sf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = x - 7$