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Cloud [144]
3 years ago
5

Drew is holding a fund-raiser. He is taking donations from his family members to supports a charity. Each family member donates

the same amount. The total amounts donated after 1,2,3 and 4 family members give money are $20, $30, $40, and $50, respectively
Please explain
Mathematics
1 answer:
larisa86 [58]3 years ago
7 0

They each give $10 because the pattern is changing by 10.

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Which of the following functions gives the length of the base edge, a(v), of a right square pyramid that is 8 inches tall as a f
Reil [10]

Answer:

\large\boxed{a(V)=\sqrt{\dfrac{3V}{8}}}

Step-by-step explanation:

The formula of a volume of a square pyramid:

V=\dfrac{1}{3}a^2h

a - base edge

h - height of a pyramid

We have H = 8in.

Substitute and solve for a:

\dfrac{1}{3}a^2(8)=V\\\\\dfrac{8}{3}a^2=V\qquad\text{multiply both sides by}\ \dfrac{3}{8}\\\\\dfrac{3\!\!\!\!\diagup^1}{8\!\!\!\!\diagup_1}\cdot\dfrac{8\!\!\!\!\diagup^1}{3\!\!\!\!\diagup_1}a^2=\dfrac{3}{8}V\\\\a^2=\dfrac{3V}{8}\Rightarrow a=\sqrt{\dfrac{3V}{8}}

3 0
3 years ago
Simplify the expression ?
melomori [17]

Answer:

The answer is cscx(cscx - 1) ⇒ the second answer

Step-by-step explanation:

∵ csc²x = cot²x + 1

∴ \frac{cot^{2}x+1-1 }{1+sinx}=\frac{cot^{2}x }{1+sinx}

Multiply the fraction by its conjugate 1 - sinx (up and down)

∴ \frac{cot^{2}x }{1+sinx}*\frac{1-sinx}{1-sinx}=\frac{cot^{2}x(1-sinx) }{1-sin^{2}x}

∵ 1 - sin²x = cox²x

∴ \frac{cot^{2}x(1-sinx) }{cos^{2}x }

∵ cot²x = cos²x/sin²x

∴ \frac{1-sinx}{sin^{x}}=\frac{1}{sin^{2}x}-\frac{sinx}{sin^{2}x}=csc^{2}x-cscx

Take cscx as a common factor

∴ cscx(cscx - 1)

7 0
3 years ago
What is a developing nation?
SCORPION-xisa [38]

Answer:

C.) (I think you meant to put c here) State with little or no economy

Step-by-step explanation:

This one was very confusing because I was beginning to think the answer could possibly be D as well. However, based on background knowledge of many developing countries in the previous century and also the present, many nations are still classified as developing despite the states being into conflict. Therefore revealing the states don't have to be working together in order to build an economy in order to be classified as a developing nation.

Now without a doubt, I do recall that a developing nation has little to no economy. That statement surely is more accurate due to it providing a fact rather than a hypothesis.

6 0
3 years ago
Read 2 more answers
Help with expanded notation, how do u do this!? Number 15 and 16
kiruha [24]
I think that # 15 is 10,000 + 400 + 50 + 6 and #16 is 100,000 + 80,000 + 70 + 5. It's really simple to figure out; just find the number in the place value and, for how many digits after it, substitute zeros (if that makes sense).

Hope this helps!
5 0
4 years ago
Read 2 more answers
PLZZZ HELPPPP i need HELEPLEPLEPLEPLEPLE
Brilliant_brown [7]

Answer:

The answer to 3.) is Graph B.

Step-by-step explanation:

I hope this helps!

6 0
3 years ago
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