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3 years ago

I WILL AWARD BRAINLIEST! PLEASE HELP ME!

Mathematics

1 answer:

maria [59]3 years ago

5 0

Answer:

I put it in step by step because it is easier. (ans)

Step-by-step explanation:

Angle 1: It is a right angle so it is (90 degrees).

Angle 2: A triangle has 180 degrees. 90 plus 22 is 112 and 180 minus 112 is (68 degrees).

Angle 3: Since angles 2 and 3 are supplementary (2 angles summed to 180 degrees), 180 minus 68 is (112 degrees).

Angle 4: This is the same angle as 3 so it is also (112 degrees).

Angle 5: This is supplementary to 3 and 4 so 180 minus 112 is (68 degrees).

Angle 6: There are markings meaning the side lengths are the same. The angle opposite of its lengths are corrosponding. So meaning unnamed angle and 6 are the same. So 180-68 is 112 and 112/2 is (56 degrees).

Angle 7: We already know the unnamed angle is 56 degrees as it is the same as angle 6. Unnamed angle and 7 are supplementary. 180 minus 56 is (124 degrees).

Angle 8: It is the same as angle 7 (124 degrees).

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Polyhedron P is a cube with a corner removed and relocated to the top of P. Polyhedron Q is a cube. How do their surface areas c

MrRissso [65]

Answer:

P's surface area is less than Q's surface area

4 0

3 years ago

The hypothesis H0: \mu=350H 0 : μ = 350 versus H_a:\mu<350H a : μ < 350 are examined using a sample of size n = 20. The on

Zolol [24]

Answer:

The statistic for this case is given $t =-1.68$

The degrees of freedom are given by:

$df =n-1= 20-1=19$

Since is a one-side lower test the p value would given by:

$p_v =P(t_{19}$

Step-by-step explanation:

Data given and notation

$\bar X$ represent the sample mean

$s$ represent the sample standard deviation

$n=20$ sample size

$\mu_o =350$ represent the value that we want to test

$\alpha$ represent the significance level for the hypothesis test.

z would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is lower than 350, the system of hypothesis are :

Null hypothesis: $\mu \geq 350$

Alternative hypothesis: $\mu < 350$

Since we don't know the population deviation, is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

The statistic for this case is given $t =-1.68$

P-value

The degrees of freedom are given by:

$df =n-1= 20-1=19$

Since is a one-side lower test the p value would given by:

$p_v =P(t_{19}$

5 0

2 years ago

Which comparison is false?

masha68 [24]

C is false i think yea

8 0

2 years ago

Please help with this and pls explain how to got this in simple words! Thank you! Will give brainliest to the best answer! Pleas

KengaRu [80]

Answer:

$60775000

Step-by-step explanation:

Question ask for how much $ you lose in 52 weeks.

You're given that computer is down 2.75 hours per week. Each of those hours cost you $425000.

In other word, you loose 2.75×425000=$1168750 each week.

If 1 week cost you $1168750,

then 52 weeks, you'll lose 1168750×52=$60775000

8 0

2 years ago

Express the area of the triangle shown below in terms of b and θ only.

Paul [167]

Given a right triangle with base, b and height, h with the angle opposide side h as θ.

The area of a triangle is given by
$A= \frac{1}{2} bh$

But,
$\tan\theta= \frac{h}{b} \\ \\ \Rightarrow h=b\tan\theta$

Therefore, the area of the triangle in terms of <span>b and θ only is given by
$A= \frac{1}{2} b(b\tan\theta)= \frac{1}{2} b^2\tan\theta$ </span>

8 0

3 years ago