Ask question

Ask question

All categories

2 years ago

7

NEED HELP ASAP!!! Three times a number plus five is equal to fifty. What is the number?

2 answers:

Alex777 [14]2 years ago

8 0

50-5= 45
45/3 = 15

Answer is 15

Reil [10]2 years ago

6 0

Answer: 3 times 15 is equal to 45 and 45 plus 5 is equal to *50*

Step-by-step explanation:

You might be interested in

Hey everybody, here is a website that helps with math problems if you're stuck try using the website I have put in here

sladkih [1.3K]

Answer:

OMG it actually does I just gat an A on a practice because of this thanks

Step-by-step explanation:

4 0

3 years ago

The given information is the _____ of the if-then statement.

sergij07 [2.7K]

The answer is “C”. None of the above

3 0

3 years ago

Read 2 more answers

Use the denition of the derivative to find f 0 (3), where f (x) = 3x+5 / 2x−1

Crazy boy [7]

Answer:

$f'(3)= -\frac{13}{25}$

Step-by-step explanation:

We are asked to find $f'(3)$ of function $f(x)=\frac{3x+5}{2x-1}$ using definition of derivatives.

Limit definition of derivatives:

$f'(x)= \lim_{h \to 0} \frac{f(x+h)-f(x)}{h}$

Let us find $f(3+h)$ and $f(3)$ .

$f(3+h)=\frac{3(3+h)+5}{2(3+h)-1}$

$f(3+h)=\frac{9+3h+5}{6+2h-1}\\\\f(3+h)=\frac{3h+14}{2h+5}$

$f(3)=\frac{3(3)+5}{2(3)-1}$

$f(3)=\frac{9+5}{6-1}\\\\f(3)=\frac{14}{5}$

Substituting these values in limit definition of derivatives, we will get:

$f'(3)= \lim_{h \to 0} \frac{f(3+h)-f(3)}{h}$

$f'(3)= \lim_{h \to 0} \frac{\frac{3h+14}{2h+5}-\frac{14}{5}}{h}$

Make a common denominator:

$f'(3)= \lim_{h \to 0} \frac{\frac{(3h+14)*5}{(2h+5)*5}-\frac{14(2h+5)}{5(2h+5)}}{h}$

$f'(3)= \lim_{h \to 0} \frac{\frac{5(3h+14)-14(2h+5)}{5(2h+5)}}{h}$

$f'(3)= \lim_{h \to 0} \frac{5(3h+14)-14(2h+5)}{5h(2h+5)}$

$f'(3)= \lim_{h \to 0} \frac{15h+70-28h-70}{5h(2h+5)}$

$f'(3)= \lim_{h \to 0} \frac{-13h}{5h(2h+5)}$

Cancel out h:

$f'(3)= \lim_{h \to 0} \frac{-13}{5(2h+5)}$

$f'(3)= \frac{-13}{5(2(0)+5)}$

$f'(3)= \frac{-13}{5(5)}$

$f'(3)= -\frac{13}{25}$

Therefore, $f'(3)= -\frac{13}{25}$ .

8 0

3 years ago

Radical expressions square root of 28

anzhelika [568]

5 and 6 is the square root of 28

6 0

3 years ago

Read 2 more answers

Which expression is equivalent to negative 4 times 4 times 4 times 4 times 4 times 4 times 4 times 4?

nataly862011 [7]

Answer:

-4*4^7

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers