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3 years ago

Given the congruent figures solve for the missing variable

Mathematics

1 answer:

Ray Of Light [21]3 years ago

5 0

I don't see the question...is that my problem? Or am I not doing things right?

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he response times for a random sample of 40 medical emergencies were tabulated. The sample mean is 13.25 minutes. The population

Gwar [14]

Answer:

The calculated value Z = 2.5 > 1.96 at 0.05 level of significance

The null hypothesis is rejected

The Alternative hypothesis is rejected

The EMS director wants to service goal of 12 minutes or less is being achieved

Step-by-step explanation:

Step(i):-

Given that the size of the random sample = 40

Given that the mean of the sample (x ⁻) = 13.25

Given that the standard deviation of the Population = 3.2 minutes

Level of significance = 0.05

The mean of the Population (μ) = 12

Step(ii):-

Null hypothesis:-H₀: (μ) = 12

Alternative Hypothesis: H₁ : μ < 12

Test statistic

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{13.25-12 }{\frac{3.2}{\sqrt{40} } }$

Z = 2.5

The tabulated value Z₀.₀₅ = 1.96

The calculated value Z = 2.5 > 1.96 at 0.05 level of significance

The null hypothesis is rejected

The Alternative hypothesis is rejected

Final answer:-

The EMS director wants to service goal of 12 minutes or less is being achieved

3 0

3 years ago

If (x + 5) represents the side of a cube, what is the polynomial that represents its volume?

borishaifa [10]

The volume of a Cube/Rectangular Prism is Length times Width times Height, (or for short L*w*h).

For a cube, the length, width, and height are equal. So the volume of a cube is L*L*L

In the question it says that the you know the length of one of the cubes sides, which is (x + 5).

So L = (x + 5).

So, the unsimplified expression is:
L * L * L
= (x + 5) (x + 5) (x + 5)
= (x^2 + 10x + 25)(x + 5)
= x^3 + 10x^2 + 25x + 5x^2 + 50x + 125
= x^3 + 15x^2 + 75x + 125

7 0

3 years ago

Please help. I’ll mark you as brainliest if correct

saul85 [17]

Answer:

25.12

Step-by-step explanation:

C = 2pir

2 * pi = 6.28, 6.28 * 4 = 25.12

5 0

3 years ago

HELP FAST!!! PLZ I BEG YOU!! I'LL GIVE BRAINLYEST!!! 10 POINTS!!! PLZ!!!

MA_775_DIABLO [31]

Answer:

I think it is A

Step-by-step explanation:

i am hop i am helpful

6 0

4 years ago

Read 2 more answers

Mary has 36 flower pots. She plants in 2/3 of her flower pot. In how many flower pots does mary plant daisies?

Mariana [72]

Answer: 24

Step-by-step explanation:

36/3 = 12

This means that 12 is one third of the flower pots.

Since she uses two thirds, just multiply the answer by 2.

12x2 = 24, so 2/3 is 24

Therefore, Mary plants daisies in 24 flower pots.

Hope this helps!

6 0

3 years ago