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gregori [183]
2 years ago
11

Find the value of x^3+x^2-3x when x=-2

Mathematics
1 answer:
Elina [12.6K]2 years ago
5 0

Answer:

-6

Step-by-step explanation:

Substitute -2 from x meaning -2^3+-2^2-3*-2; solve this, you get -6!

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Austin drove 455 miles in 7 hours.
Effectus [21]

Answer:

9 hours

Step-by-step explanation:

455/7 gives you the mph

which is 65

then divide 585 miles by the mph (65)

585/65

= 9 hours

3 0
2 years ago
It's due in 20 minutes!!
slega [8]

Answer:

A. 18 sit-ups in one minute

B. 30 doors per hour

D. 18 words per minute

F. $30 per night

C. 3.5 miles per hour

E. $10.50 per pair of pants

Step-by-step explanation:

A. 36/2 = 18

B. 15 * 2 = 30

D. 72/4 = 18

F. 150/5 = 30

C. 10.5/3 = 3.5

E. 31.50/3 = 10.50

7 0
2 years ago
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The null and alternative hypotheses are given. Determine whether the hypothesis test is​ left-tailed, right-tailed, or​ two-tail
WINSTONCH [101]

Answer:    Two-tailed test.

Population mean is the parameter which is tested.

Step-by-step explanation:

Given :   H_0: \mu=105

H_1:\mu\neq105

We know that , the alternative hypothesis (H_1) indicates kind of the hypothesis test we need to perform whether ​left-tailed, right-tailed, or​ two-tailed.

Here, the alternative hypothesis (H_1) is two-tailed, so the hypothesis test is a two-tailed test.

Also, the parameter present in the hypothesis is \mu which is a symbol to represent the population mean.

Thus , Population mean is the parameter which is tested.

8 0
3 years ago
What is the square root of 7?
galben [10]

Answer:

2.64575131106

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Lisa is cooking muffins. The recipe calls 7 cups of sugar. She has already put in 2 cups. How many more cups does she need to pu
jok3333 [9.3K]

Answer:

She needs to use 5 more cups of sugar for the muffins

Step-by-step explanation:

7-2=5

P.S. May I get brainly?

3 0
3 years ago
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