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3 years ago

Third time posting. Explain it too

Mathematics

2 answers:

riadik2000 [5.3K]3 years ago

5 0

Answer:

oooooooof

Step-by-step explanation:

maw [93]3 years ago

4 0

Answer:

D. x-5 / x+4

Step-by-step explanation:

(-3x³ +9x² +30x) / (-3x³ -18x² - 24x)

=-3x (x²-3x-10) / -3x(x²+6x+8)

=-3x(x+2)(x-5) / -3x(x+2)(x+4)

=x-5 / x+4

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Help please !!!! I need this I don’t need a detailed explanation

natta225 [31]

Answer:

The answer is C, -6/5

7 0

3 years ago

Read 2 more answers

Jasper has an annual salary of $71,000, and his company pays him twice a month. What is the gross income per paycheck that Jaspe

Elan Coil [88]

Divide $71,000 by 24 because there are 12 months in a year and he gets paid 2 times a month. I got $2,958.33

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4 years ago

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Against the wind a commercial airline in South America flew 630 miles in 3.5 hours. With a tailwind the return trip took 3 hours

Salsk061 [2.6K]

Answer:

The speed of plane is $195\ mph$ , and speed wind is $15\ mph$ .

Step-by-step explanation:

Given against the wind the airline flew $630$ miles in $3.5$ hours.

including the tailwind the return trip took $3$ hours.

Let speed of plane is $x$ .

Also, speed of the wind is $y$ .

Now, we will find speed on each case.

Speed against the wind is $\frac{630}{3.5}=180\ mph$

Speed with the wind is $\frac{630}{3}=210\ mph$

Now, we will write the equation

$x+y=210\\x-y=180$

Add these equation we get,

$2x=390\\x=\frac{390}{2}\\x=195\ mph$

Now, plug this value in $x+y=210$ to get speed of wind

$195+y=210\\y=210-195\\y=15\ mph$

So, the speed of plane in still air is $195\ mph$ , and speed of the wind is $15\ mph$ .

5 0

3 years ago

What is the value of (2/3)^-4 A. -81/16 B. -16/81 C. 16/81 D. 81/16

Alisiya [41]

For this case, we must find the value of the following expression:

$(\frac {2} {3}) ^ {- 4}$

By properties of powers we have that:

$a ^ {- 1} = \frac {1} {a ^ 1} = \frac {1} {a}$

Thus, we can rewrite the expression as:

$\frac {1} {(\frac {2} {3}) ^ 4} =\\\frac {3 ^ 4} {2 ^ 4} =\\\frac {81} {16}$

So, we have to:

$(\frac {2} {3}) ^ {- 4} = \frac {81} {16}$

Answer:

$\frac {81} {16}$

Option D

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3 years ago

Which of the following cannot be used to generate random digits?

QveST [7]

I would say A. Table of contents

3 0

2 years ago