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2 years ago

Helppppp (8th) plsss

Mathematics

2 answers:

IgorC [24]2 years ago

5 0

Answer:

M= -2

Step-by-step explanation:

I hope this helps yoy

iren2701 [21]2 years ago

3 0

M=-2 man I gotchu :)))

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The average age of the 8 people in room A is 25. The average age of the 12 people in room B is 50. If the people in the 2 rooms

eduard

The average would be the total amount divided by the 2 groups, so the answer would be 37.5 years old.

7 0

3 years ago

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

Yuki888 [10]

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

Explanation

Her total start-up cost is $52,000.

Each day, she spends $650 on operating costs (like utilities and wages) and she earns $960 per day from her students' lesson fees.

If the number of days to overcome the start-up cost is $d$ , then

the total operation cost spent in $d$ days $= \$650d$ and

the total students' lesson fees earned in $d$ days $= \$960d$

Part A: The equation to represent the situation will be: $960d-650d=52000$

Part B:  Julianne will begin making a profit when....

$960d-650d>52000\\ \\ 310d>52000\\ \\ d>\frac{52000}{310}\\ \\ d >167.741... \approx 168$

So, Julianne will begin making a profit after 168 days.

5 0

3 years ago

Write a function rule that produces an output of 7 for an input of 1.6

Karolina [17]

Here is a function rule that produces an output of 7 for an input of 1.6

f(x) = x + 5.4

when x = 1.6, f(x) = 1.6 + 5.4 = 7

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3 years ago

Pierre's company bought cement for $5.25 per bag . If they sold the cement for $7.35 per bag. What was the markup rate ?

qwelly [4]

2.15$ would be the mark up rate.

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3 years ago

Please Help with angles!

777dan777 [17]

Step-by-step explanation:

003:

To solve this, we'll be using the Pythagorean theorem, $a^2+b^2=c^2$

$a^2+8^2=15^2\\a^2+64=225\\a^2=161\\a = \sqrt{161}$

004:

For the next couple questions we'll be using a fun rule called SOHCAHTOA, which stands for Sin (Opposite/Hypotenuse) Cos (Adjacent/Hypotenuse) Tan (Opposite/Adjacent). From this we can see that Tan θ is 8/ $\sqrt{161}$ .

005:

From this rule again, we can tell that sin Ф (Opposite/Hypotenuse) is going to be $\sqrt{161}$ /15.

Answer:

003: $\sqrt{161}$

004: 8/ $\sqrt{161}$

005: $\sqrt{161}$ /15

7 0

3 years ago