All categories

3 years ago

Factorization of 3x^2+21x

Mathematics

1 answer:

ycow [4]3 years ago

6 0

Answer:

3x(x+7)

Step-by-step explanation:

$3 {x}^{2} + 21x \\ = 3x(x + 7)$

You might be interested in

Which is the graph of g(x) = [x + 3]?

KiRa [710]

Answer:

(0,3)

..........................

8 0

3 years ago

25% of 40 emails were spam how many emails were spam

mixer [17]

10. 25% of 40 or 0.25 times 40 gives you 10.

also 25% = 1/4
so 1/4 x 40 = 10

7 0

4 years ago

Rewrite without absolute value for the given conditions: <br> y=|x-3|+|x+2|-|x-5|, if x>5

Wittaler [7]

Answer:

y = x + 4

Step-by-step explanation:

Since x > 5, x-3 > 0, x + 2 > 0 and x - 5 > 0

So Ix - 3I = x - 3, Ix + 2I = x + 2 and x - 5 = x - 5

Therefore, y = x - 3 + x + 2 - x + 5

y = x + 4

5 0

3 years ago

Read 2 more answers

Each time Sam takes a shot the probability that he will score is 5/8

Marrrta [24]

Answer:

5/8 is it simplified

Step-by-step explanation:

7 0

3 years ago

Assume women’s heights are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. a. If one wom

Zarrin [17]

Answer: a) 0.5636 b) 0.7881

Step-by-step explanation:

We assume that women’s heights are normally distributed .

Let x be the random variable that represents the shoe sizes.

Also, The population mean = $\mu=\text{63.6 inches}$ ; Standard deviation: $\sigma=\text{2.5 inches}$

a) Formula for z:-

$z=\dfrac{x-\mu}{\sigma}$

Put x= 64, we get

$z=\dfrac{64-63.6}{2.5}=0.16$

Now, the probability that the male shoe sizes are greater than 8 :-

$P(z$

Hence, the probability that her height is less than 64 inches = 0.5636

b. Sample size : n= 25

Then , the formula for z :-

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

Put x= 64, we get

$z=\dfrac{64-63.6}{\dfrac{2.5}{\sqrt{25}}}=0.8$

Then, the probability that they have a mean height less than 64 inches.:_

$P(z$

Hence, the probability that they have a mean height less than 64 inches. =0.7881

7 0

3 years ago

Read 2 more answers

Factorization of 3x^2+21x​

Factorization of 3x^2+21x