2 years ago

Find the percent of change from

Mathematics

1 answer:

Mashcka [7]2 years ago

8 0

Answer:

option 4

Step-by-step explanation:

Percent change is calculated as

$\frac{change}{original}$ × 100%

change = 15 - 10 = 5 , then

percent change = $\frac{5}{10}$ × 100% = 5 × 10% = 50%

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Kelly can type 120 words in 3 minutes. at that ate, how many words can she type in 5 minutes?

madam [21]

$\frac{120\ \text{words}}{3\ \text{minutes}} = \frac{40\ \text{words}}{1\ \text{minute}}$

$\frac{40\ \text{words}}{1\ \text{minute}} \times \frac{5}{5} = \frac{200\ \text{words}}{5\ \text{minutes}}$

Kelly can type 200 words in five minutes.

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2 years ago

13. The sum of the measures of angle Mand angle Ris 90°.

Sunny_sXe [5.5K]

Answer:

x=5

Step-by-step explanation:

If the sum of the measures of angle M and R is 90 degrees, and you know that angle R is 55 degrees, subtract angle R from the total angle. Then, solve for M

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3 years ago

-1/2 (−4n+6)+3n=47 solve n=?

Sidana [21]

Answer:

N:10

Step-by-step explanation:

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3 years ago

Read 2 more answers

7-x= 49<br> Solve the exponential equation

hjlf

Answer:

x=-42 to check ur answer place it like this 7-(-42) =49 which is correct

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3 years ago

Make c the subject:<br> x=-b+(b²-4ac) divided by 2a<br><br> The brackets mean square root

kipiarov [429]

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2 years ago