Give an example how to use a number line to multiply a 2 digit number by 20

1 answer:

3 0

You would start on x(x being the 2 digit number)and to multiply it by 20 you would move to the right x amount of spaces repeating this process 20 times.

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Daisy saved 4/5 of her salary. She gave 1/3 of the money she had saved to her mother. If she gave $300 to her mother, what was h

cluponka [151]

I think it would be like $1150

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3 years ago

Read 2 more answers

Find the discount if a $69.99 item is on sale for $39.99.

inn [45]

The easiest way to do it (for me) is to find 1% of the regular price. I think we can round the prices to $70,00 and $40,00 to show nice percentage.

70 / 100 = 0,7

So 1% is 0,7. Now we can divide $40,00 by 0,7 to calculate how many percent it is:

40 / 0,7 = 57 (after rounding it to the nearest whole number)

So the discount was 100 - 57 = 43 percent.

Doublecheck (optional):

70 * 57% =
= 70 * 57/100 =
= 7 * 57/10 =
= 7 * 5 7,10 =
= 7 * 5,7 =
= 39,9 (the price after the discount)

70 * 43% =
= 70 * 43/100 =
= 7 * 43/10 =
= 7 * 4 3/10 =
= 7 * 4,3 =
= 30,1 (the value of the discount)

The difference of 0,1 is because of the rounding, but it's correct.

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3 years ago

HELPPPPPP PLSSSSSSSsssssssssssssssss

zavuch27 [327]

Answer:

Zero

Step-by-step explanation:

Slope is:

$\frac{Change of y}{Change of x}$

Since there is no change of the y value, there is no slope.

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3 years ago

Determine the approximate measure of Y.

Soloha48 [4]

Answer:

I took the test, Its B) 41.1

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A factory produces bottled water at a rate of 2,000 cases per hour. They know that 1.14% of the cases must be rejected because a

IRINA_888 [86]

1.14 per 100 or 1.14:100 or $\frac{1.14}{100}$

$\frac{1.14}{100} = \frac{n}{2000}$

I will multiply the numerator by 20 because multiplying by 20 is how 100 became 2000
22.8 cases are rejected per hour.

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3 years ago