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sammy [17]
3 years ago
12

If three times a number decreased by 10 is 25, what is the number

Mathematics
1 answer:
mafiozo [28]3 years ago
4 0
Let the number be n
3*n - 10=25
3*n=25+10
3*n=35
n=35/3=11*2/3=11.67
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Sam and Bruno were computing how many kilometers they rode in the 3 bike trips they took last month. In order, they rode 45.7, 4
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Answer:

We are given number of miles the 3 bike trips they took last month = 45.7, 40.9, and 38 miles.

Sam and Bruno were computing how many kilometers.

Also one kilometer equals 0.621 miles.

From this we can see than 1 kilometer is smaller unit and a mile is a larger unit.

In order to convert number of miles into kilometers, we need to divide each number of mile by 0.621 miles.

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Bruno is correct. When going from a larger unit to a smaller unit you need to divide.

Step-by-step explanation:

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3 years ago
Find 54 is 90% of what number
aleksandrvk [35]
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il63 [147K]

Answer:

The equation of the line is y = \frac{4}{3} x + 2

Step-by-step explanation:

The form of the equation that passes through two points (x1, y1) and (x2, y2) is y = m x + b, where

  • m is the slope of the line whose rule is m=\frac{y2-y1}{x2-x1}
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Let us solve the question:

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∴ y1 = -2 and y2 = 6

→ Use the rule of m to find it

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→ Simplify it by dividing up and down by 2

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→ Substitute its value in the form of the equation above

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→ Add 4 to both sides

∴ -2 + 4 = -4 + 4 + b

∴ 2 = b

→ Substitute it in the form of the equation

∴ y = \frac{4}{3} x + 2

∴ The equation of the line is y = \frac{4}{3} x + 2

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Step-by-step explanation:

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