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3 years ago

Use the function below to find f(-4).

Mathematics

1 answer:

Margaret [11]3 years ago

7 0

Answer:

Step-by-step explanation:

f(x) = 2x

f(-4) = 2(-4) = -8

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What minus 136 equals 656?

ratelena [41]

Answer:

792

Step-by-step explanation:

x - 136 = 656

+136 = +136

x= 792

6 0

3 years ago

I need help with a question

zzz [600]

Answer:

$5x^2+9x+3$

Step-by-step explanation:

We just need to add like terms together

$11x^2-6x^2=5x^2$

$5x+4x=9x$

$8-5=3$

6 0

3 years ago

Can I get help answering this question? It's a derivatives question, further info in the attachment.

Nadusha1986 [10]

$\bf f(x)=|3+9x|\implies f(x)=\sqrt{(3+9x)^2}\implies f(x)=[(3+9x)^2]^{\frac{1}{2}}
\\\\\\
\cfrac{dy}{dx}=\stackrel{chain~rule}{\cfrac{1}{2}[(3+9x)^2]^{-\frac{1}{2}}\cdot 2(3+9x)\cdot 9}\implies \cfrac{dy}{dx}=\cfrac{9(3+9x)}{[(3+9x)^2]^{\frac{1}{2}}}
\\\\\\
\cfrac{dy}{dx}=\cfrac{27+81x}{|3+9x|}\\\\
-------------------------------$

$\bf \textit{left-hand derivative at }x=-\frac{3}{9}\implies \cfrac{27+81x}{-(3+9x)}
\\\\\\
\cfrac{27+81\left( -\frac{3}{9} \right)}{-3-9\left( -\frac{3}{9} \right)}\implies \cfrac{27-27}{-3+3}\implies \stackrel{unde fined}{\cfrac{0}{0}}\\\\
-------------------------------\\\\
\textit{right-hand derivative at }x=-\frac{3}{9}\implies \cfrac{27+81x}{+(3+9x)}
\\\\\\
\cfrac{27+81\left( -\frac{3}{9} \right)}{3+9\left( -\frac{3}{9} \right)}\implies \cfrac{27-27}{3-3}\implies \stackrel{unde fined}{\cfrac{0}{0}}$

8 0

3 years ago

This table shows the daily high temperature, in Fahrenheit, for two cities for ten days. City A 90 85 84 85 80 82 83 85 89 82 Ci

Anni [7]

Since the person didn't write the answer choices they were:

A. On average, city A was warmer than city B.

B. The median and mode are different for city B.

C. The temperature range between the maximum and minimum values for city A is greater than the temperature range between the maximum and minimum values for city B.

D. The median is less for city A than for city B.

I believe it is A personally cause i took the test and got it right

7 0

4 years ago

Read 2 more answers

A game store charges a monthly membership fee of $7.50, but then the charge to rent a game is only $1.00. Another store has no m

Eduardwww [97]

Answer:

6 games.

Step-by-step explanation:

Given that,

Monthly membership fee of store 1 is $7.5, but then the charge to rent a game is only $1.00

Another store has no membership fee, but that store charges $2.00 to rent a game.

Let there be n games needed to be rented each month for the total fees to be the same from either store.

Cost of first store = $7.50+$1.00n

Cost of another store = $2.00

If cost equals,

$7.50+$1.00n=$2

n=5.5 $\approx$ 6

Hence, 6 games needed to be rented each month.

6 0

3 years ago