3 years ago

A bacteria colony doubles in 8 hours. How long does it take to triple? Use N=No2^t/T

1 answer:

Volgvan3 years ago

4 0

You will first find the unit rate which is single in four hours so then multiply by triple which is 3 and then you get triple will be in 12 hours

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The ratio of boys to girls at the park was 9 to 2. If there were 45 boys, how many girls were there

tia_tia [17]

45 divided by 9 is 5 so 5 times 2 is 10. So theirs 10 girls at the park

5 0

3 years ago

Alex buys 24 apples from the supermarket. When he gets home, he finds that 6 apples are bad. What percentage of the apples are b

umka21 [38]

Answer:

25%

Step-by-step explanation:

Since there are 24 apples, and 6 are bad, to find the percentage of the bad apples, you do bad apples/total apples

6/24=.25

0.25 is 25%

8 0

3 years ago

Alex has 520 yards of fencing to enclose a rectangular area.

Pavlova-9 [17]

<span>Perimeter =2w+2L= 520.
We can solve this by understanding that the area is maximized by a square
Therefore L=w.

p=2w+2w=520=4w
w=130

Area

A=wL=130(130)= 16900 square yards</span>

6 0

3 years ago

Read 2 more answers

Solve the right triangle below. Round all your answers to the nearest tenth. Measure of angle Z = ______

valentina_108 [34]

Answer:

$Measure \: of \: angle \: z = \boxed{ \tt{ 19.5\degree}}$

7 0

3 years ago

Help quick please. Order the numbers from least to greatest.

Anastasy [175]

Answer:

$-2\frac{1}{4}$

Step-by-step explanation:

Mod of any number represents the absolute value of the number.

Therefore, $|-2\frac{1}{4}|=2\frac{1}{4}$ = 2.25

$-2\frac{1}{4}=-2.25$

$|1\frac{1}{4}|=1.25$

$\frac{3}{4}=0.75$

$|-1\frac{3}{4}|=1\frac{3}{4}=1.75$

$-1\frac{1}{4}=-1.25$

Now we can arrange these numbers in ascending order.

-2.25 < -1.25 < 0.75 < 1.25 < 1.75 < 2.25

Therefore, $-2\frac{1}{4}$

4 0

3 years ago