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LenaWriter [7]
2 years ago
10

Seven more than two times a certain number is 181. Find the number

Mathematics
1 answer:
serg [7]2 years ago
4 0

Answer:

87

Step-by-step explanation:

181-7=174

174/2=87

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In the figure below, EC || AB. Find the length of EC.
timofeeve [1]

Answer:

Letter a)

Step-by-step explanation:

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3 years ago
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Adrian works in New York City and makes $40 per hour. She works in an office and must pay $20 a day for lunch. If she wants to m
andrew-mc [135]

Answer: She would have to work 7 hours to earn $260.

Step-by-step explanation: 40×7=280 280-20=260 Hope this helps.

6 0
3 years ago
Question 1: find the volume of a cube whose total surface area is 486cm^2
lapo4ka [179]
<h3>The volume of cube is 729 cubic centimeter</h3>

<em><u>Solution:</u></em>

<em><u>The surface area of cube is given as:</u></em>

Surface\ area = 6a^2

Where, "a" is the length of side of cube

Given that, surface area = 486 square centimeter

486 = 6a^2\\\\a^2 = \frac{486}{6}\\\\a^2 = 81\\\\a = 9

<u><em>Find the volume of cube:</em></u>

volume\ of\ cube = a^3\\\\volume\ of\ cube = 9^3\\\\volume\ of\ cube = 9 \times 9 \times 9\\\\volume\ of\ cube = 729

Thus volume of cube is 729 cubic centimeter

8 0
3 years ago
3 Express the following fractions in a different way:<br>(a) 1/4 = ? (b) 2/4 = ? (C) 1/2 = ?​
lawyer [7]

Answer:

Step-by-step explanation:

A. 1.4. B. 2.4. C. 1.2

8 0
3 years ago
One number exceeds another by 1. the sum of the numbers is 21. what are the numbers
Cerrena [4.2K]
Try this solution:
1. if 1st number is 'x', the 2d number is 'y', then it is possible to make up the system of two equation according to the condition:
\left \{ {{x-y=1} \atop {x+y=21}} \right. \ =\ \textgreater \  \  \left \{ {{x=11} \atop {y=10}} \right.
2. one number is 11, another number is 10.
3 0
3 years ago
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