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dem82 [27]
3 years ago
8

Which of the following gives an example of a set that is closed under addition.

Mathematics
1 answer:
cluponka [151]3 years ago
4 0
I believe the answer is D
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Rewrite 2 + (x + 4) as an equivalent expression that doesn't use parentheses
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2+x+4 just drop the parenthasesi think
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Mrs. Harrison borrows $600 to pay for a new phone. The simple interest on the loan is 9% for one year.
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Answer:

$654

Step-by-step explanation:

600*1.09=654

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Step-by-step explanation:

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Each packet of the cooking oil weighs 2/5th of a kilogram and one kilogram of the cooking oil costs $6.5. Sara went to the groce
Reika [66]

Answer:

C) $20.80

Step-by-step explanation:

1 kg of cooking oil = $6.5

1 packet of cooking oil =2/5 kg

If 1 kg of cooking oil = $6.5

2/5kg of cooking oil = $X

Cross Multiply

1kg × $X = 2/5kg × $6.5

$X = 13/5

$X = 2.6

Hence 2/5kg of oil cost $2.6

Since 1 packet of oil = 2/5kg of oil , 1 packet of oil cost $2.6

The amount she spent if she bought if she bought 8 packets of the cooking oil is calculated as:

1 packet of oil = $2.6

8 packets of oil =

$2.5 × 8

= $20.80

Therefore,if Sara bought 8 packets of oil, the amount she would spend = $20.80

7 0
3 years ago
Find the missing measure for a right circular cone given the following information. Find L.A. if r = 6 and h = 8
Masja [62]
\bf \textit{lateral area of a cone}\\\\
LA=\pi r\sqrt{r^2+h^2}\quad 
\begin{cases}
r=radius\\
h=height\\
-----\\
r=6\\
h=8
\end{cases}\implies 6\pi \sqrt{6^2+8^2}
6 0
3 years ago
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