3 years ago

I need help finding number eighty-four.

Mathematics

1 answer:

Valentin [98]3 years ago

5 0

Do the same thing u was doing to the other problems i bet u will get it right

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Which expression is equivalent 5(2x-7) a.2x-25 b.7x-12 c.7x-12 d.10x-7 e.10x-35

Allushta [10]

Answer:

Your Answer is E. 10x-35

Step-by-step explanation:

Factor 10x−35

10x−35

=5(2x−7)

Answer:

5(2x−7)

3 0

4 years ago

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A data set is symmetrical with a mean of 100 and a standard deviation of 5. About what percent of the data is between 90 and 105

saveliy_v [14]

ANSWER:

Is 81.5%

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3 years ago

A weighted average of the value of a random variable, where the probability function provides weights, is known as _____. a. a p

alexandr402 [8]

Answer:

The answer is c. The expected value.

Step-by-step explanation:

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3 years ago

Verify the identity. 4 csc 2x = 2 csc2x tan x

vlada-n [284]

Step-by-step explanation:

$4csc(2x) = 2csc^2(x) tan(x)$

We start with Left hand side

We know that csc(x) = 1/ sin(x)

So csc(2x) is replaced by 1/sin(2x)

$4 \frac{1}{sin(2x)}$

Also we use identity

sin(2x) = 2 sin(x) cos(x)

$4 \frac{1}{2sin(x)cos(x)}$

4 divide by 2 is 2

Now we multiply top and bottom by sin(x) because we need tan(x) in our answer

$2\frac{1*sin(x)}{sin(x)cos(x)*sin(x)}$

$2\frac{sin(x)}{sin^2(x)cos(x)}$

$2\frac{1}{sin^2(x)} \frac{sin(x)}{cos(x)}$

We know that sinx/ cosx = tan(x)

Also 1/ sin(x)= csc(x)

so it becomes 2csc^2(x) tan(x) , Right hand side

Hence verified

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3 years ago

The sum, work , and In simplest form.

yarga [219]

5 3/4 = 23/4.

-4 5/6 = -29/6.

23/4 - (-29/6) = 10 7/12

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3 years ago