Ask question

Ask question

All categories

Ray Of Light [21]

3 years ago

13

GIVING FREE 10 POINTS FOR NO REASON!!!

2 answers:

ohaa [14]3 years ago

5 0

Answer:

Sure

Step-by-step explanation:

Helen [10]3 years ago

4 0

Answer:

Sure id love to!!!

Step-by-step explanation:

your yt channel sound really really cool id love to support your yt channel!!!

You might be interested in

Factor the expression.

grigory [225]

Hey!

First, let's write the problem,
$4r^2-64$
Factor out the common term, which is 4,
$=4\left(r^2-16\right)$
Then, let's factor this part: $r^2-16$
We are going to factor it using the difference of squares rule.
$=\left(r+4\right)\left(r-4\right)$
Our final factored answer would be,
$=4\left(r+4\right)\left(r-4\right)$

Thanks!
-TetraFish

8 0

3 years ago

Read 2 more answers

Factor Factor -2bk 2 + 6bk - 2b. ill give ya 14 points !

Serga [27]

2b(k-1) Hope this helps!

7 0

3 years ago

Read 2 more answers

12 times a number decreased by 5 is no more than 55

lions [1.4K]

Answer:

12n -5 ≤ 55

Step-by-step explanation:

12 times a number (represented by n) is 12n.

"Decreased by 5" means 5 is subtracted from the product, giving 12n-5.

"Is no more than 55" means "is less than or equal to 55".

Then the expression written using math symbols is ...

12n -5 ≤ 55

6 0

3 years ago

Read 2 more answers

What is the answer to this?

ra1l [238]

The answer to your question is = 184

5 0

2 years ago

Read 2 more answers

An art history professor assigns letter grades on a test according to the following scheme.A: Top 5% of scoresB: Scores below th

adoni [48]

Answer:

Grade B score:

$76 \leq x \leq 89$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 73.3

Standard Deviation, σ = 9.7

We are given that the distribution of score on test is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

B: Scores below the top 5% and above the bottom 62%

We have to find the value of x such that the probability is 0.62

$P( X > x) = P( z > \displaystyle\frac{x - 73.3}{9.7})=0.62$

$= 1 -P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.62$

$=P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.38$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 73.3}{9.7} = 0.305\\\\x = 76.26$

We have to find the value of x such that the probability is 0.05

$P(X < 0.95) = \\\\P( X < x) = P( z < \displaystyle\frac{x - 73.3}{9.7})=0.95$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 73.3}{9.7} = 1.645\\\\x = 89.26$

Thus, the numerical value of score to achieve grade B is

$76 \leq x \leq 89$

7 0

3 years ago