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3 years ago

First find f+g, f-g, f-g and f\g. Then determine the domain for each function f(x)=3×+7,g(×)=×+9 (f+g)(×)=

1 answer:

8 0

I'll do f+g, you try the others on your own and comment if you need help with them! For f+g, you're just going to add the two functions together:
$f(x)=3x+7$
$g(x)=x+9$
$(f+g)(x)=(3x+7)+(x+9)=4x+16$

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I need help with math

lyudmila [28]

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3 years ago

Need some math help 50pts

mina [271]

Answer:

angle 1 and 3 are 127.3 degrees and angle 2 is 52.7 degrees

Step-by-step explanation:

so angle 2 is also 52.7 degrees because angle 2 and 4 are vertical oppostite angles

so we can look at it now that we have to find angle 1. since we know a line is 180 degrees we make angle 1 plus angle 2 equal to 180

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2 years ago

Read 2 more answers

A bag contains 15 marbles. The probability of randomly selecting a green marble is One-fifth. The probability of randomly select

dsp73

Given:

Total number of marbles = 15

Probability of randomly selecting a green marble = $\dfrac{1}{5}$ .

Probability of randomly selecting a green marble, replacing it, and then randomly selecting a blue marble = $\dfrac{2}{25}$ .

To find:

The number of blue marbles.

Solution:

Let the number of blue marbles be x.

$\text{Probability}=\dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}$

$P(Blue)=\dfrac{x}{15}$

It is given that,

$P(Green)=\dfrac{1}{5}$

Probability of randomly selecting a green marble, replacing it, and then randomly selecting a blue marble is $\dfrac{2}{25}$ . So,

$P(Green)\times P(Blue)=\dfrac{2}{25}$

$\dfrac{1}{5}\times \dfrac{x}{15}=\dfrac{2}{25}$

$\dfrac{x}{75}=\dfrac{2}{25}$

Multiply both sides by 75.

$\dfrac{x}{75}\times 75=\dfrac{2}{25}\times 75$

$x=2\times 3$

$x=6$

Therefore, the number of blue marbles in the bag is 6.

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3 years ago

Which is bigger -32 or 13.8?

Tpy6a [65]

13.8 is bigger being a positive number.

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2 years ago

Use breaking apart to find each product 6 times 6

masya89 [10]

So the anser would be (3×6)+(3×6)=36 because 3×6 is 18 and if you multiply 18×2=36 so (3×6)+(3×6)=36

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3 years ago