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3 years ago

Multiply this problem 2/7 x 21

Mathematics

1 answer:

faust18 [17]3 years ago

8 0

Answer:

Step-by-step explanation:

2/7 times 21 equals 6. Next time, don't ask as a brainly question and use calculator so you don't waste/lose your points.

Hope this helps!!! PLZ MARK BRAINLIEST!!!

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Please help me with this question

san4es73 [151]

Step-by-step explanation:

Given: $f'(x) = x^2e^{2x^3}$ and $f(0) = 0$

We can solve for f(x) by writing

$\displaystyle f(x) = \int f'(x)dx=\int x^2e^{2x^3}dx$

Let $u = 2x^3$

$\:\:\:\:du=6x^2dx$

Then

$\displaystyle f(x) = \int x^2e^{2x^3}dx = \dfrac{1}{6}\int e^u du$

$\displaystyle \:\:\:\:\:\:\:=\frac{1}{6}e^{2x^3} + k$

We know that f(0) = 0 so we can find the value for k:

$f(0) = \frac{1}{6}(1) + k \Rightarrow k = -\frac{1}{6}$

Therefore,

$\displaystyle f(x) = \frac{1}{6} \left(e^{2x^3} - 1 \right)$

5 0

2 years ago

Decrease £600 by 20%

Tpy6a [65]

The answer would be £480 because 20% of 600 is 120 and 600 take away 120 is 480

4 0

3 years ago

Read 2 more answers

Alishia rides her bike 45.3 km in 143 minutes. what is her average speed in kilometers per hour?

Nady [450]

Average speed of Alishia is 19 kilometers per hour

Average speed is calculated by dividing the total distance that something has traveled by the total amount of time it took it to travel that distance. Speed is how fast something is going at a particular moment. Average speed measures the average rate of speed over the extent of a trip

Given :

Distance = 45.3 km

Time taken = 143 minutes = 143/60 =2.384 hours

∴ Average speed = 45.3/2.384 = 19 kilometers per hour

Thus the average speed of Alishia is 19 kilometers per hour.

Learn more about Average speed here :

brainly.com/question/17277454

#SPJ4

8 0

1 year ago

The percent of decrease from 12 to 9.

MissTica

I’m pretty sure it’s 75%

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3 years ago

Read 2 more answers

So, in Math I am learning Scientific Notation. Can someone show an example and some tips for me as well as the steps to remember

defon

You know how decimals are really long to write, like 0.00000000089? Well, with scientific notation, you can shorten them. Take the decimal I wrote for instance. Using scientific notation, I can change it to 8.9 * 10^-10. The decimal is shortened, and according to the exponent, 10^-10, we move the decimal place for 8.9 to the left ten places, leaving us with 0.00000000089.

3 0

3 years ago