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soldi70 [24.7K]
2 years ago
14

Please help me!!? It’s onramps precalc and I have no Idea what I am doing

Mathematics
1 answer:
Nikitich [7]2 years ago
6 0

Answer:

see attached

Step-by-step explanation:

As I can't see the options you have to select from, I have attached my explanation for creating identities from cos^2(x) + sin^2(x) = 1.

Please comment underneath if you need more help.

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How to find the rate in exponential growth formula A=P(1-r)^t
erma4kov [3.2K]
R = rate
A = P(1-r)^t
A^t = P(1-r)
A^t/P = 1-r
(A^t/P)-1 = -r
r = -((A^t/P)-1)
8 0
3 years ago
A survey of 340 randomly chosen US adults found that 60% of the 150 men and 50% of the 190 women ran a five-kilometer race durin
Andrej [43]

Answer:

The p-value is less than the significance level, so we will reject the null hypothesis, and conclude that at 5% significance level, the proportion for women that ran 5 km is more than the proportion of male that ran the 5 km. Thus, women are more likely to run the 5 km race.

Step-by-step explanation:

We are given;

Number of males selected; n₁ = 150

Number of females selected; n₂ = 190

Proportion of the males; p₁ = 0.6

Proportion of females; p₂ = 0.5

Let's define the hypotheses;

Null hypothesis; H0: p₁ ≥ p₂

Alternative hypothesis; Ha: p₁ < p₂

Now, the z score formula for this is;

z = (p₁ - p₂)/√(p^(1 - p^))(1/n₁ + 1/n₂))

Where;

p^ = (p₁ + p₂)/2

p^ = (0.6 + 0.5)/2

p^ = 0.55

Thus;

z = (0.6 - 0.5)/√(0.55(1 - 0.55))((1/150) + (1/190))

z = 0.1/0.0543

z = 1.84

From online p-value from z-score calculator attached, using z = 1.84, significance level = 0.05, one tailed hypothesis, we have;

P-value = 0.033

The p-value is less than the significance level, so we will reject the null hypothesis, and conclude that at 5% significance level, the proportion for women that ran 5 km is more than the proportion of male that ran the 5 km. Thus, women are more likely to run the 5 km race.

Although if we check at 0.01 significance level, we will not have the same answer as the p-value will be greater.

3 0
3 years ago
Solve the inequality <br> a^2(a-4)(a+3)&gt;0
Marysya12 [62]
Use math papa it’s a good thing it’s on the browser
6 0
2 years ago
Answer my question 4 u could get 10 points
Greeley [361]

Answer:

30

Step-by-step explanation:

Split the trapezoid into parts, a rectangle and a triangle. The dimensions of the rectangle will be 3 and 8, so 3*8=24. 24 is part of the answer. The dimensions of the triangle are 4 and 3, and 4*3/2 is 6, so 6 is the other part of the answer. 24 + 6 = 30.

6 0
2 years ago
Rewriting expressions, image attached
NemiM [27]

Answer:

I am sorry I really don't know I will try to help if I get it sorry :((

Step-by-step explanation:

3 0
2 years ago
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