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3 years ago

I do not understand what I did wrong. Can someone please help me answer this question?

Mathematics

1 answer:

Andrei [34K]3 years ago

5 0

Maybe try 48%
i think it's asking for the percentage

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Erika worked 14 hours last week and 20 hours this week. If she earns $9 per hour, how much did she earn during these two weeks?

ozzi

we know that

Erika earns $\$9$ per hour

By proportion

Find how much she earn during the total hours of two weeks

The total hours of two weeks is equal to

$14+20=34\ hours$

$\frac{9}{1} \frac{\$}{hour} =\frac{x}{34} \frac{\$}{hours} \\ \\x=34*9 \\ \\x=\$306$

therefore

<u>the answer is</u>

$\$306$

4 0

4 years ago

Read 2 more answers

The surface area of a cube is 150 cm2. what is the area of each face of the cube?

djyliett [7]

The area of each face is 25 cm

5 0

3 years ago

The most common form of color blindness is an inability to distinguish red from green. However, this particular form of color bl

MaRussiya [10]

Answer:

(a) P(CBM) = 0.07

(b) P(not CBW) = 0.996

(c ) P(neither is color-blind) = 0.926

(d) P=(at least one is color-blind) = 0.074

Step-by-step explanation:

The correct data is that Approximately 7% of American men and 0.4% of American women are red-green color-blind.

(a) Probability that he is red-green color-blind:

$P(CBM) = 0.07$

(b) Probability that she is NOT red-green color-blind:

$P(not\ CBW) =1- P(CBW)\\P(not\ CBW) = 1 -0.004\\P(not\ CBW) =0.996$

(c) Probability that neither are red-green color-blind

$P(neither) = P(not\ CBW)*P(not\ CBM) \\P(neither) = 0.996 *(1-0.07)\\P(neither)=0.926$

(d) Probability that at least one of them is red-green color-blind

$P(at\ least\ one) = 1- P(neither) \\P(at\ least\ one) = 1-0.926\\P(at\ least\ one) = 0.074$

7 0

4 years ago

The freshman Spirit Club took a trip to the state fair. There were 59 students and 6 chaperones, and the total admission cost fo

Savatey [412]

Answer:

8.46

Step-by-step explanation:

59+6=65 65 divided by 508= 7.815 (7.82) 6 divided by 508=84.666 (8.67) then subtract 8.67 from 508 = 499.33 divided by 59 = 8.46 thats your answer.

7 0

4 years ago

Read 2 more answers

Subtract 3a(a + b + c) – 2b(a – b + c) from 4c(–a + b + c). Please do not just tell the answer, I need to know how to solve this

riadik2000 [5.3K]

Answer:

-3a² - ab - 7ac - 2b² + 6bc + 4c²

Step-by-step explanation:

Step 1: Distribute

3a² + 3ab + 3ac - 2ab + 2b² -2bc

Step 2: Combine like terms

3a² + ab + 3ac + 2b² - 2bc

Step 3: Distribute again

-4ac + 4bc + 4c² - (3a² +ab + 3ac + 2b² -2bc)

Step 4: Combine like terms again

-3a² - ab - 7ac - 2b² + 6bc + 4c²

And you have your final answer.

3 0

3 years ago