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DedPeter [7]
3 years ago
8

Please help. Algebra.

Mathematics
1 answer:
iragen [17]3 years ago
8 0

Answer:

d. solve for 'y' in the second equation

The first step is to solve for 'y' after that you will substitute it in the next step ie when using substitution method.

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Find the volume of the sphere with a diameter of 22 and round to the nearest 10
maksim [4K]

Answer:

\huge\boxed{\sf Volume = 16728.8 \ units^3}

Step-by-step explanation:

Diameter = 22 units

Radius = 11 units

\rule[225]{225}{2}

\sf Volume = \frac{4}{3} \pi r^3\\\\Volume = \frac{4}{3} (3.14)(11)^3\\\\Volume = \frac{4}{3} (3.14)(1331)\\\\Volume = \frac{4}{3} (4184.5)\\\\\bold{Volume = 16728.8 \ units^3}

\rule[225]{225}{2}

Hope this helped!

<h2>~AnonymousHelper1807</h2>
7 0
4 years ago
Simplify the expression. show work. <br> 9xy^ - 11xy^
kap26 [50]
^ means to the power of with nothing after it, it's miss-used. Solving without the ^ symbol it is -2xy with the ^ symbol it's irrational and cannot be solved.
4 0
3 years ago
A shirts price was $32, on 6% mark, what is the new price of the shirt
allochka39001 [22]

Answer:

19.20

Step-by-step explanation:

.6 is 6%. X 32

8 0
3 years ago
Read 2 more answers
2( 10 - a^2 ) + 7a If ( a = 4 )Evaluate each expression
Lostsunrise [7]

Solution:

Given:

2(10-a^2)+7a

when a = 4, substitute for a in the expression;

\begin{gathered} 2(10-a^2)+7a=2(10-4^2)+7(4) \\ =2(10-16)+28 \\ =2(-6)+28 \\ =-12+28 \\ =16 \end{gathered}

Therefore, if (a = 4), then

2(10-a^2)+7a=16

Hence, the answer is 16.

6 0
1 year ago
Which mathematical sentence most Accurately expresses the information in the problem below?
d1i1m1o1n [39]

Answer:

Don't quote me on this but it's probably C. 12c ≥ 88

Step-by-step explanation:

This is because he packages 88 eggs <em>into </em>cartons of 12.

88/12 is 7.33333... so it makes sense to have a greater or equal amount of eggs. If you multiply 7.333333... by 12, each additional 3 gets you closer to 88 so again, makes sense to have more.

5 0
3 years ago
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