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3 years ago

10

kaya does homework for 2 2/3 hours. she spends 1/4 of this time doing science homework. how much times does she spend doing her

science homework?

1 answer:

attashe74 [19]3 years ago

3 0

20 minutes long she does homework for

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Which of the following is equivalent??

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Answer:

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2 years ago

Simplify the complex fraction. 8/5 divide by 6 3/4 *

hichkok12 [17]

Step-by-step explanation:

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First, simplify the 6 $\frac{3}{4}$ to an improper fraction, which is:

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Next rewrite the equation using the improper fraction:

$\frac{8}{5}$ ÷ $\frac{27}{4}$

Now, in order to divide the fraction, we will need to flip the second fraction over, and then multiply the two fractions together. A great way to remember this is the phrase <em>Copy Dot Flip - </em>Copy the first fraction, put a dot for multiplication, and flip the second fraction.

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Finally, multiply together and simplify/reduce if needed:

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3 years ago

2. CHEMISTRY How many liters of 15% acid and

Wewaii [24]

Answer:

<h3> 26²/₃ liters of 15% acid and 13¹/₃ liters of 33% acid</h3>

Step-by-step explanation:

Concentration Amount of Amount

of Solution Solution (L) of Acid

15% x 0.15x

33% y 0.33y

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x + y = 40 ⇒ x = 40 - y

0.15x + 0.33y = 0.21•40

0.15(40 - y) + 0.33y = 0.21•40

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0.18y = 2.4

y = 13¹/₃

x = 40 - 13¹/₃ = 26²/₃

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3 years ago

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Answer: 360 miles per hour…………………

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