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Crazy boy [7]
3 years ago
10

Write each product using an exponent. 9 × 9 × 9 × 9

Mathematics
2 answers:
vampirchik [111]3 years ago
7 0

Answer:

9^4

Step-by-step explanation:

The number 9 is timed for 4 times (sorry for my broken english as my english is bad)

ki77a [65]3 years ago
6 0

Answer:

9^4 is what you’re looking for right?

Step-by-step explanation:

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B. Find the value of X. Show your work, I’m not sure how to do this
Eddi Din [679]

Answer:

63°

Step-by-step explanation:

The sum of all interior angles of a triangle = 180°

Therefore:

x + 96° + 21° = 180°

x + 117 = 180

Subtract 117 from each side

x = 180 - 117

x = 63°

5 0
2 years ago
A test consists of 490 true or false questions. If the student guesses on each question, what is the standard deviation of the n
monitta
I believe the answer is 1.
3 0
3 years ago
The mean work week for engineers in start-up companies is claimed to be about 64 hours with a standard deviation of 8 hours. Kar
blondinia [14]

Answer:

1.) mean

2.) H0 : μ = 64

3.) 0.0028

4) Yes

Step-by-step explanation:

Null hypothesis ; H0 : μ = 64

Alternative hypothesis ; H1 : μ < 64

From the data Given :

70; 45; 55; 60; 65; 55; 55; 60; 50; 55

Using calculator :

Xbar = 57

Sample size, n = 10

Standard deviation, s = 7.14

Test statistic :

(xbar - μ) ÷ s/sqrt(n)

(57 - 64) ÷ 8 / sqrt(10)

Test statistic = - 2.77

Pvalue = (Z < - 2.77) = 0.0028 ( Z probability calculator)

α = 10% = 0.1

Reject H0 ; if P < α

Here,

P < α ; Hence, we reject the null

6 0
3 years ago
D is the same as 359 more than the product of 344 and d<br>write the sentence as an equation ​
nignag [31]

Answer:

d = 359 + 344d

Step-by-step explanation:

d = 359 + 344d

7 0
3 years ago
5 p + 2(3 p - 5) = -29- 8 p<br> Solve for p ( geometry)
Vika [28.1K]

Step-by-step explanation:

5p + 6p -10 = -29 - 8p

11p - 10 = -29 - 8p

+10 +10 +8p

+8p = -19

19p=-19

p=-1

5 0
3 years ago
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