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3 years ago

Simplify the expression 8^2+9(12/3*2)-7 Step by step please :)

Mathematics

1 answer:

Xelga [282]3 years ago

4 0

Answer:

129

Step-by-step explanation:

${8}^{2} + 9(12 \div 3 \times 2) - 7$

$64 + 9(12 \div 3 \times 2) - 7$

$64 + 9 \times 8 - 7$

$64 + 72 - 7$

$\boxed{\green{= 129}}$

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What is the volume of the prism?

anygoal [31]

Answer:

78.75 cm cubed

Step-by-step explanation:

To find the volume of the prism, use the formula V = l*w*h where l = 4.5, w = 5 and h = 3.5.

So the volume is V = 4.5*5*3.5 = 78.75

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4 years ago

Can someone plz help me solve this problem I need help plz someone help me!

cestrela7 [59]

Answer: 25 < P < 36

15/4 < w < 26/4

35/4 < L < 46/4

<u>Step-by-step explanation:</u>

Perimeter is BETWEEN 25 and 36

25 < P < 36

Graph: O--------------O

25 36

Perimeter = 2L + 2w ; substitute L = w + 5

25 < 2(w + 5) + 2w < 36

25 < 2w + 10 + 2w < 36

25 < 4w + 10 < 36

15 < 4w < 26

$\dfrac{15}{4}$ < w < $\dfrac{26}{4}$

$3\dfrac{3}{4}$ < w < $6\dfrac{1}{2}$

Graph: O------------------------O

$3\dfrac{3}{4}$ $6\dfrac{1}{2}$

Perimeter = 2L + 2w ; L = w + 5 --> w = L - 5

25 < 2L + 2(L - 5) < 36

25 < 2L + 2L - 10 < 36

25 < 4L - 10 < 36

35 < 4L < 46

$\dfrac{35}{4}$ < L < $\dfrac{46}{4}$

$8\dfrac{3}{4}$ < L < $11\dfrac{1}{2}$

Graph: O------------------------O

$8\dfrac{3}{4}$ $11\dfrac{1}{2}$

Note: Make sure you use OPEN dots when graphing.

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4 years ago

Factor 72y+108z to identify the equivalent expressions.<br><br> Choose 2 answers

Diano4ka-milaya [45]

Answer:

its either B,C, OR D, because if you add the numbers inside the parenthesis and times it by the number in front of the : ( ), then you get 180 and that's what the number is that you should get. From Jacob in middle school in Florida.

Step-by-step explanation:

Where (because) is, to the end of the whole sentence is the explanation. thank you for understanding if you do

just got it wrong and the answers turn out to be B,and D.

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3 years ago

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timurjin [86]

Answer:

fraction: 1/2

decimal: 0.5

percent: 50%

Step-by-step explanation:

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3 years ago

An item is regularly priced at $90. Is is on Sale for 20% off the regular price. How much (in dollars) is discounted from the re

fomenos

Answer:

Step-by-step explanation:

because 20% of 90 is 18

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3 years ago

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