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3 years ago

How do you multiply fractions by whole numbers?

Mathematics

2 answers:

Finger [1]3 years ago

7 0

An easy way to cheat is to convert those fractions into decimals.

<span>¯\_(ツ)_/¯</span>

umka21 [38]3 years ago

4 0

Rewrite the whole number as a fraction. To rewrite a whole number as a fraction, simply place the whole number over 1. ...Multiply the numerators of the two fractions. ...Multiply the denominators of the two fractions. ...Simplify.

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A jet travels 510 miles in 5 hours. At this rate, how far could the jet fly in 15 hours? What is the rate of speed of the jet?

n200080 [17]

Answer:

1530

Step-by-step explanation:

We already know that 5 hours is 510 miles and to know how much is 15 hours you will add 510 3 times 510 + 510 + 510 what 1530 would give

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3 years ago

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A bank account pays 4.2% interest.write an equation with an intial value 2000.how much will the account have in it after 5 years

GarryVolchara [31]

Answer:

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Step-by-step explanation:

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3 years ago

What is the exact length of AB

Tatiana [17]

We have the formula S= r * theta , where S is arc length , r is radius , and theta is central angle in radians

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3 years ago

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What is the area of the circle if DF=20 in.

crimeas [40]

We know that

DF is the diameter of the circle
so
radius r=DF/2----->20/2-----> r=10 in

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the answer is

100*pi in² or 314 in²

4 0

3 years ago

Jane multiplies her number by three and subtracts 2.

katrin [286]

Answer:

Let the number they chose be 'x'.

Result of Jane = $3x -2$

Result of Elliot = $2x+3$

Given that,

The product of their result = 110

$or, (3x-2)(2x+3) = 110\\or, 6x^{2} +9x-4x-6 = 110\\or, 6x^{2} +5x - 6 = 110\\or, 6x^{2} +5x - 6-110 = 0\\\\or, 6x^{2} +5x - 116 = 0\\or, 6x^{2} +29x - 24x - 116 = 0\\or, x (6x +29) -4(6x+29) = 0\\or, (x-4)(6x+29) = 0\\i.e. x=4 or x=\frac{-29}{6} \\So,~ the ~number ~they~ chose~was ~either ~4 ~or ~\frac{-29}{6}$

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3 years ago