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dybincka [34]
3 years ago
14

Item 16 Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease. Increasing 20 to 40

is the same as increasing 20 by . So, it is a 100% increase. Decreasing 40 to 20
Mathematics
1 answer:
MAXImum [283]3 years ago
7 0

Answer:

Increasing 20 to 40 is the same as increasing 20 by 20 (or itself), so it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by 1/2 or by 20. So it is a 50% increase.

Step-by-step explanation:

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Five more than a certain number is 11 less than double the number
kupik [55]

Answer:

The number is 16

Step-by-step explanation:

Five more than a certain number is 11 less than double the number

x+5 = 2x-11

11+5 = 2x-x

16 = x

5 0
2 years ago
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There are 20 girls and 26 boys on the tennis team.
salantis [7]

Answer:

B 1013

Step-by-step explanation:

because 20/2 is 10 and 26/2 is 13 so 1013

6 0
3 years ago
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A pound of grapes costs $2.49. Lucas bought two pounds of grapes. He gave the clerk a $10.00 bill. How much change did Lucas get
GaryK [48]

Answer:

$5.02

Step-by-step explanation:

$2.49 × 2 = $4.98

$10 - $4.98 = $5.02

7 0
2 years ago
Can someone help? Would be appreciated.
pickupchik [31]

Answer:

WOah

Step-by-step explanation:

5 0
3 years ago
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Negitive 7 over 18 minus negitive 9 over 4 equals?​
Inessa [10]

Answer:

1 31/36 is your answer

Step-by-step explanation:

Find common denominators. Note that what you do to the denominator, you must do to the numerator;

(-7/18)(2/2) = (-14/36)

(-9/4)(9/9) = (-81/36)

Combine the terms:

(-14/36) - (-81/36)

Note that two negative signs directly next to each other equals a positive sign.

(-14/36) + 81/36

-14/36 + 81/36

(-14 + 81)/36

Combine like terms. Solve the parenthesis:

(67)/36

Change to a mixed fraction:

(67/36) = 1 31/36

1 31/36 is your answer.

~

5 0
3 years ago
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