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3 years ago

You guys are worth it!

Mathematics

2 answers:

Alik [6]3 years ago

8 0

Answer:

i know im amazing

Step-by-step explanation:

timofeeve [1]3 years ago

7 0

Answer:

Awwwww thank you!!! Your worth more than the stars above. THANKS FOR THE POINTS!!!!

Step-by-step explanation:

P.S. I love your pfp!!!!

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Answer!asap if you are a bot don't even respond

Tema [17]

Answer:

Step-by-step explanation:

Upon factoring all terms we are left with the product of

[(x-4)(x+6)(x-6)]/[5(x-6)(3x+5)(x-4)]

The (x-4)s and (x-6)s cancel out and we are left with

(x+6)/(5(3x+5)) which is also equal to

(x+6)/(15x+25)

6 0

3 years ago

Prove the identity. (tanx+1)^2=(1+2sinxcosx)/(cos^2x)

SOVA2 [1]

$(\tan x+1)^2=\tan^2x+2\tan x+1$
$=\sec^2x+2\tan x$
$=\dfrac1{\cos^2x}+2\dfrac{\sin x}{\cos x}$
$=\dfrac1{\cos^2x}+\dfrac{2\sin x\cos x}{\cos^2x}$
$=\dfrac{1+2\sin x\cos x}{\cos^2x}$

4 0

4 years ago

Which expressions are equivalent to 7-2 x 76?

Lilit [14]

-145 that is the answer I think

7 0

3 years ago

Angle A and Angle B are supplementary angles. If the measure of angle A = (6x + 10)° and the measure of angle B = (4x +30), then

omeli [17]

Answer:

86°

Step-by-step explanation:

Given:

A = (6x + 10)°

B = (4x +30)°

Two angles are supplementary if they sum up to 180° ;

A + B = 180°

Now insert the parameters and solve;

6x + 10 + 4x +30 = 180

10x + 40 = 180

10x = 140

x = 14

So;

B = (4x +30)° = 4(14) + 30 = 86°

8 0

3 years ago

Two students in different classes took the same math test. Both students received a

ivann1987 [24]

Answer:

Both students scored in the top 10% of their classes.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

In this question:

Top 10% = Above the 100 - 10 = 90th percentile.

The 90th percentile of scores is X when Z has a pvalue of 0.9, that is, Z = 1.28.

So, the student who had a z-score above 1.28 scored in the 90th percentile of their class.

In student A's class the mean was 78 and the standard deviation of 5. He scored 87.

We have that $\mu = 78, \sigma = 5, X = 87$