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djverab [1.8K]
3 years ago
14

Please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Varvara68 [4.7K]3 years ago
3 0

Answer: A I think.

Step-by-step explanation:

Natali [406]3 years ago
3 0

Answer:

14.4

Step-by-step explanation:

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If you add the digits in a two-digit number and multiply the sum by 7, you get the original number. If you reverse the digits in
kolbaska11 [484]
The answer is A. 42

Solution:
Let x= ones digit, y=tens digit

1st condition (original number) : 7(x+y)=10y + x
2nd condition (new number by reversing the digits): 18+x+y=10x+y

simplifying:
1st condition: 6x=3y
2nd condition: x=2
substituting x=2 to 6x=3y
<span>y=4</span>
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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
An item costs $330 before tax, and the sales tax is $23.10 . find the sales tax rate. write your answer as a percentage.
ad-work [718]
Divide sales tax amount over the item's cost
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3 years ago
Is this relation a function yes or no ?
andrew-mc [135]

Answer:

Yes

Step-by-step explanation:

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6 0
2 years ago
How would I do this question.
olga2289 [7]

Answer:

The density of cube is 6.17959 \frac{g}{cm^{3} }

Step-by-step explanation:

The density is given by ration of a mass of body and volume occupied by a body.

\rho = \frac{m}{V}

Where,

\rho is density.

m is mass of a body

V is the volume of a body

Given that one side of the cube is 0.53cm

Hence, the volume of a body is V=0.53^{3}=0.148877cm^{3}

Now, the Density of the cube will be

\rho = \frac{m}{V}

\rho = \frac{0.92}{0.148877}

\rho =6.17959

Thus, The density of cube is 6.17959 \frac{g}{cm^{3} }

3 0
3 years ago
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