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3 years ago

Help and explain please !!!!!!!!!!!!

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

7 0

Answer:

f(-3) = 6

Step-by-step explanation:

we use f(x) = - 2x

because -3 is < 0

f(-3) = -2(-3)

= 6

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If f(x) = 7 + 4x and g(x)=1/2x, what is the value of (f/g)(5)?

Romashka [77]

<h2>Answer:</h2>

$d. \ \boxed{270}$

<h2>Step-by-step explanation:</h2>

In this exercise we need to make a division and evaluate the new function at $x=5$ . so we have two functions, namely:

$f(x)=7+4x \ and \\ \\ g(x)=\frac{1}{2x}$

Therefore:

$f(5)=7+4(5)=27 \\ \\ g(5)=\frac{1}{2\times 5}=\frac{1}{10}$

So:

$(f/g)(5)=\frac{27}{\frac{1}{10}}=270$

3 0

4 years ago

Read 2 more answers

What is 13 - 4x = 1 - x

JulsSmile [24]

13-4x=1-x
13=4x+x=1-x+x
13-3x=1
13-1-3x=1-1
12-3x=0
12=3x
12/3=3x/3
4=x
Therefore, x=4

5 0

4 years ago

I NEED HELP PLEASE I WILL MARK BRAINLIST<br><br> The question is in the screenshot

Ivan

The answer is unreasonable because the value of x is between 2 and 3.The error is : she did not introducing logs in solving the equation.

Step-by-step explanation:

The question is $7^x=95$

Here answers is unreasonable because, she can test with powers of seven like;

7²=49

7³=343

So this means the value of x lies between 2 and 3, so here answer 11.71 is unreasonable

b) In this case, to solve the equation, introduce logs both sides

$7^x=95$

$log7^x=log95\\\\\\xlog7=log95\\\\\\x=\frac{log95}{log7} \\\\\\x=2.340$

Learn More

Indices :brainly.com/question/1660321

Keywords :Equation, error

#LearnwithBrainly

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3 years ago

Jared is 10 years old. His brother Peter is 15 years old. What are some chewy fruit worms they can share without having to make

Alexxandr [17]

Answer:

gummy worms

Step-by-step explanation:

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3 years ago

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How do i slove this and the input is -9

IrinaK [193]

Equation step-by-step:

$y = \sqrt{-9} - 2$

$\bf~y = 3i -2$

Hope it helped,

BioTeacher101

<em>(If you have any questions feel free to ask them in the comments)</em>

8 0

3 years ago