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Gre4nikov [31]
3 years ago
7

Tell wether the angles are adjacent or vertical. Then find the value of x.

Mathematics
1 answer:
Aneli [31]3 years ago
4 0

Adjacent means next to each other and vertical literally means vertical, or linearly across from each other. Since angle x is next to the 35 degree angle, they are adjacent angles.

To find x, we know that the little box on the bottom left corner means a right angle, or 90 degree angle. Since we know the other angle's value, we do 90 - 35 = 55 degrees.


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Step-by-step explanation:

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What is mMHJ? Please help
Ghella [55]
2x - 20 = x + 15

x = 35

Now plug x in:

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7 0
3 years ago
Calcium is an essential nutrient for strong bones and for controlling blood pressure and heart beat. Because most of the body’s
irakobra [83]

Answer:

No, because the 95% confidence interval contains the hypothesized value of zero.

Step-by-step explanation:

Hello!

You have the information regarding two calcium supplements.

X₁: Calcium content of supplement 1

n₁= 12

X[bar]₁= 1000mg

S₁= 23 mg

X₂: Calcium content of supplement 2

n₂= 15

X[bar]₂= 1016mg

S₂= 24mg

It is known that X₁~N(μ₁; σ²₁), X₂~N(μ₂;δ²₂) and σ²₁=δ²₂=?

The claim is that both supplements have the same average calcium content:

H₀: μ₁ - μ₂ = 0

H₁: μ₁ - μ₂ ≠ 0

α: 0.05

The confidence level and significance level are to be complementary, so if 1 - α: 0.95 then α:0.05

since these are two independent samples from normal populations and the population variances are equal, you have to use a pooled variance t-test to construct the interval:

[(X[bar]₁-X[bar]₂) ± t_{n_1+n_2-2;1-\alpha /2} * Sa*\sqrt{\frac{1}{n_1} +\frac{1}{n_2} }]

t_{n_1+n_2-2;1-/2}= t_{25;0.975}= 2.060

Sa= \sqrt{\frac{(n_1-1)S^2_1+(n_2-1)S^2_2}{n_1+n_2-2} }= \sqrt{\frac{11*529+14*576}{12+15-2} } = 23.57

[(1000-1016)±2.060*23.57*\sqrt{\frac{1}{12} +\frac{1}{15} }]

[-34.80;2.80] mg

The 95% CI contains the value under the null hypothesis: "zero", so the decision is to not reject the null hypothesis. Then using a 5% significance level you can conclude that there is no difference between the average calcium content of supplements 1 and 2.

I hope it helps!

3 0
3 years ago
I need help on these whoever answer this question will be the brainliest!!
kirza4 [7]

Answer:

It's 60

Step-by-step explanation:

It's 60

PLEASE VOTE 5.0 MARK ME BRAINLIEST AND THANK ME

5 0
3 years ago
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