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3 years ago

14

Determine the measures of the unknown (labeled) angles.

1 answer:

Usimov [2.4K]3 years ago

3 0

Look at the lower smaller triangle: a=180-58-69=53
Look at the larger triangle: the two interior angle a and b add up to equal the exterior angle which is 93 degree, so a+b=93, b=93-a=93-53=40

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At a local health club, a researcher samples 75 people whose primary exercise is cardiovascular and 75 people whose primary exer

ivolga24 [154]

Answer:

A

Step-by-step explanation:

Basically, this is an observational study because the researcher does not apply any treatment.

It's not an experiment because there is no experimentation involved. :)

It's not double-blind because in that case the researcher would have to apply something to two kinds of groups. one aware one the other not. not the case.

It's not D because The observations are comparing two kinds of subjects and they are not looking for a cause and effect.

8 0

3 years ago

Read 2 more answers

Julianne opens a dance studio. Her start-up costs for the building, advertising, and supplies $52,000. Each day, she spends $650

amid [387]

<u>Answer-</u>

The equation is $960d-650d = 52000$ and Julianne will begin making a profit after 168 days.

<u>Solution-</u>

Julianne's start-up cost = $52,000,

Each day, she spends = $650,

and she earns = $960 per day,

If 'd' is the number of days to overcome the start-up and daily operation cost, then

total operation cost of d days = $650d and

total student lesson fees earned in d days = $960d

∴ The equation to represent the situation is,

$960d-650d = 52000$

∴ Julianne will begin making a profit,

$\Rightarrow 960d-650d \geq 52000$

$\Rightarrow 310d \geq 52000$

$\Rightarrow d \geq \frac{52000}{310} =167.74 \approx168(ans)$

8 0

3 years ago

B(n) = -1 (2)^n-1 What is the 5th term in the sequence?

bija089 [108]

Answer:

<h2>The answer is - 16</h2>

Step-by-step explanation:

<h3> $b(n) = - 1 ({2})^{n - 1}$ </h3>

where

n is the number of terms

From the question since we are finding the 5th term

n = 5

Substitute the value into the above formula and solve

We have

$b(5) = - 1({2})^{5 - 1} \\ = - 2 ^{4}$

We have the final answer as

<h3>- 16</h3>

Hope this helps you

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3 years ago

[CORRECT ANSWER RECEIVES BRAINLIEST ONLY

sammy [17]

Answer:

step 2

Step-by-step explanation:

The student first made an error in the step 2.

Because if we simplify the equation A in step 1, we should distribute the right side of the equation following the rule a(b-c) = a*b +a*(-c)

So, it would be

–7y = (-7)*(16)+(-7)*(-2z)

=> -7y = -112 + 14z

3 0

3 years ago

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Which number is 300% of the difference between 23 and 27?

Nata [24]

Your answer is 12

The difference 27 – 23 = 4, and 300% of 4 is 3 times 4, or 12.

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3 years ago