4 years ago

PLEASE HELP WITH ALGEBRA QUESTIONS!!

1 answer:

5 0

1. (f+g)(x) = f(x) +g(x)
.. = (x^2-36) +(x^3+2x^2-10)
.. = x^3 +3x^2 -46

2. (f•g)(x) = f(x)•g(x)
.. = (x^4-9)•(x^3+9)
.. = x^7 +9x^4 -9x^3 -81

3. (f-g)(x) = f(x) -g(x)
.. = (x^3-2x^2+12x-6) -(4x^2-6x+4)
.. = x^3 -6x^2 +18x -10

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Leigh is going diving and needs to descend to a depth of 360 feet below sea level. She wants to do it in 12 equal descents. How

vesna_86 [32]

Answer:

30 feet

Step-by-step explanation:

If they are equal, just divide 360 by 12.

360 ÷ 12 = 30

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3 years ago

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Alenkinab [10]

The answer is 210 .. .

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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

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3 years ago

Select the correct answer

Vinvika [58]

The first part of the answer is a because you have to find the range for each of the given sets.

So A. for the first one because you have a 24 for the range where as the b set has a 21 for range.

the second part is it has a greater range

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3 years ago

Read 2 more answers

The following data points are the number of games pitched by each of the Greenbury Goblins' starting pitchers last season.

Leviafan [203]

Answer: 1.87 games

Step-by-step explanation:

step 1 ; x= 3+2+4+7 divide 4 = 16/4 = 4 games

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4 years ago