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Phoenix [80]
2 years ago
9

Please help me with these!

Mathematics
1 answer:
katen-ka-za [31]2 years ago
3 0
The correct answer would be D
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Can someone please help me with 10-16 it’s due tomorrow!!! Please
VMariaS [17]
10) V=πr² *h= π*10²*12≈3770
11) V=A(base)*h= (3√3/2)*(9²)*10=2104
A(base)=(P*a)/2=(6*9*3√3)/2=9*9*3√3/2

12)V=πr² *h=π*18² *6≈6107
13)V=4*3*12=144
14) h(triangle)=√(5²-3²)=√16=4
A(base)=(3*4)/2=6
V=A(base)* height (prism)=6*2=12
15)  V=A(base)*h= (3√3/2)*(6²)*11= 1029
16)V=A(base)*h=2(1+√2)5²*22≈2656
7 0
3 years ago
Katie wants to hang a painting in a gallery. The painting and frame must have an area of 45 square feet. The painting is 6 feet
Luda [366]
Each side should increase by 2x (left & right, and up & down) so that to match the condition :
7+2x)(6+2x) = 45
Solving it will give you: 4x² + 26x - 3

5 0
3 years ago
Alex invests his money in an account paying 2% interest compounded semiannually. What is the effective annual yield on this acco
Travka [436]

Answer: 2.01%.

Step-by-step explanation:

Suppose Alex invests $1 into the account for one year. The formula is A=P0⋅(1+rk)N⋅k with P0=$1. We know that r=0.02 and k=2 compounding periods per year. Now, N=1 year. Substituting the values we have A=$1⋅(1+0.022)2=$1.0201. Now, to calculate the effective annual yield, we will use the formula rEFF=A−P0P0. rEFF=1.0201−11=0.0201 or 2.01%. When rounded to two decimals, rEFF=2.01%. However, do not include the % in your answer.

3 0
3 years ago
Simplify 26-18b+11(b-3)
xxMikexx [17]

Answer:

<u>-7b-7</u>

Step-by-step explanation:

First you have to distribute 11 throughout the parentheses.

26-18b+11(b-3)\\26-18b+11b-33

Now we can combine like terms. (-18b, 11b, -33, 26)

-18b+ 11b  and -33+26

-7b-7

This is your simplified answer for your expression.

<u>-7b-7</u>

6 0
3 years ago
Read 2 more answers
Are the slopes 1/4 and -1/4 parallel, perpendicular, or neither?
anyanavicka [17]
-1/4 is not = -1 / 1/4 ( its = -4)  so its neither .
6 0
3 years ago
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