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3 years ago

Compute: -1 2/3 * 2 1/7

Mathematics

1 answer:

Alex17521 [72]3 years ago

5 0

Answer:

Fraction form: -3 4/7

Decimal form: -3.57142

Step-by-step explanation:

convert mixed number to improper fractions

apply the fraction rule a/b * c/d = a * c / b * d

Factor the number

cancel the common factor

multiply the numbers

Conver improper fraction to mixed numbers

To get your final answer:

= -3 4/7

Hope this helps! :)

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Kim finish reading a book and 13.5 hours. He took Javis 845 minutes to read same book. Monica read the book and 49,500 seconds.

sesenic [268]

Put it all into the same measurement unit -
Kim: 48,600 seconds. (13.5*60=810, 810*60=48600)
Javis: 50,700 seconds. (845*60=50,700)
Monica: 49,500 seconds.

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3 years ago

How is 0.09 smaller than 0.1

denis-greek [22]

Answer:

$0.09 < 0.1$

Step-by-step explanation:

Remember that it doesn't matter how many numbers are after the tenths place of a decimal point what matters is the tenths place itself. If you have a decimal that has dozens of numbers but it's tenth place is a 3 and then you have a decimal with 5 numbers in whole but it's tenths place is 4, the 4 is greater then the 3 simply because it's greater in tenths.

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3 years ago

A number plus 17 is 25 algebraic expression

netineya [11]

Answer:

x + 17 = 25

Step-by-step explanation:

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3 years ago

Read 2 more answers

Write three ratios equivalent to the given ratio:

seraphim [82]

4/5; 16/20; 24/30.

10/4; 20/8; 15/6

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4 years ago

5. The distance between two given points (5,2) and (x,5) is 5 units. Find the possible values of x. *

kirza4 [7]

<h3>Answers: x = 1 and x = 9</h3>

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Explanation:

We'll use the distance formula here. Rather than compute the distance d based on two points given, we'll go in reverse to use the given distance d to find what the coordinate must be to satisfy the conditions.

We're given that d = 5

The first point is $(x_1,y_1) = (5,2)$ and the second point has coordinates of $(x_2,y_2) = (x,5)$ where x is some real number.

We'll plug all this into the distance formula and solve for x.

$d = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2}\\\\5 = \sqrt{(5-x)^2+(2-5)^2}\\\\5 = \sqrt{(5-x)^2+(-3)^2}\\\\5 = \sqrt{(5-x)^2+9}\\\\\sqrt{(5-x)^2+9} = 5\\\\(5-x)^2+9 = 5^2\\\\(5-x)^2+9 = 25\\\\(5-x)^2 = 25-9\\\\(5-x)^2 = 16\\\\5-x = \pm\sqrt{16}\\\\5-x = 4 \ \text{ or } \ 5-x = -4\\\\-x = 4-5 \ \text{ or } \ -x = -4-5\\\\-x = -1 \ \text{ or } \ -x = -9\\\\x = 1 \ \text{ or } \ x = 9\\\\$

This means that if we had these three points

A = (5, 2)
B = (1, 5)
C = (9, 5)

Then segments AB and AC are each 5 units long.

7 0

3 years ago