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2 years ago

Look at the question below.

Mathematics

2 answers:

Scorpion4ik [409]2 years ago

8 0

Answer:

A: 4p-16

Hope this helps!

Step-by-step explanation:

you have to multiply the 2 to 4p and 8 which gives you 8p-16 and then subtract 4p and that give you 4x-16.

lara [203]2 years ago

6 0

Answer:

Step-by-step explanation:

2(4p-8)-4p is simplified to : 4p-16

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A car increases, then decreases, its speed. Which table could represent the speed of the car?

babunello [35]

Answer:

B is answer

Step-by-step explanation:

3 0

2 years ago

A sample of 11 students using a Ti-89 calculator averaged 31.5 items identified, with a standard deviation of 8.35. A sample of

lina2011 [118]

Answer:

We reject H₀, with CI = 90 % we can conclude that the mean numbers of times identified with Ti-84 does not exceed that of the Ti-89 by more than 1,80

Step-by-step explanation:

Ti-89 Calculator

Sample mean x = 31,5

Sample standard deviation s₂ = 8,35

Sample size n₂ = 11

Ti-84 Calculator

Sample mean y = 46,2

Sample standard deviation s₁ = 9,99

Sample size n₁ = 12

t(s) = ( y - x - d ) / √s₁²/n₁ + s₂²/n₂

t(s) = 12,9 / √(99,8/12) + (69,72/11)

t(s) = 12,9 / √8,32 + 6,34

t(s) = 12,9 / 3,83

t(s) = 3,37

Test Hypothesis

Null Hypothesis H₀ y - x > 1,80

Altenative Hypothesis Hₐ y - x ≤ 1,80

We have a t(s) = 3,37

We need to compare with t(c) critical value for

t(c) α; n₁ +n₂-2 df = 12 +11 -2 df = 21

If we choose CI = 95 % then α = 5 % α = 0,05

From t-student table

t(c) = 1,72

t(s) = 3,37

t(s) >t(c)

t(s) is in the rejection region therefore we accept Hₐ with CI = 95 %

8 0

3 years ago

Please help would be appreciated

yKpoI14uk [10]

Answer:

The total volume of the whole figure is 576m³.

Step-by-step explanation:

First find the volume for the first figure.

Volume of a Rectangular Prism (formula): L•W•H

V = (15m)(12m)(2m)

V = 360m³

Now, find the volume for the second figure.

V = (6m)(12m)(3m)

V = 216m³

Finally, just add both volumes to find the total volume of the entire figure.

Vt = 216m³ + 360m³

Vt = 576m³

5 0

2 years ago

Nannette installed a security system in her office for $150 the monthly monitoring fee is $30. So far, Nannette has spent $420 f

mojhsa [17]

Answer:

9 Months

Step-by-step explanation:420 - 150 = 270

270/30 = 9

5 0

3 years ago

The horizontal distance between two towers is 70m. The angle of depression of the top of the first tower when seen from the top

lana66690 [7]

As shown in the image, we have a 30 degree angle and x, which is what we want. By doing tan30, we can find x, so tan30=x/70 and 70*tan30=x= 70*sqrt(3)/3. 120-x=height of first tower = 120-(70*sqrt(3)/3) = roughly 79.59

7 0

3 years ago