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3 years ago

PLS HELP I NEED IT PLSSSSSS

Mathematics

2 answers:

rusak2 [61]3 years ago

7 0

Answer:

Spider man

Step-by-step explanation:

Do 1 over 5 times 5 bc the exponent is negative

Amanda [17]3 years ago

7 0

I have no idea i just need to comment on something lol

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Jaya is painting her room. She mixes 2 pints of blue paint with 5 pints of red paint to get her desired color. Which equation ca

Doss [256]

I am not positive but I think it is 2/5+=x/18

5 0

3 years ago

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It takes leon 13 hours to seal his driveway working by hinself. If michael helps leon, they can seal the driveway in 7 hours. Ho

Monica [59]

Answer:

15.1667 hours (15 hours and 10 minutes)

Step-by-step explanation:

Using the concept of "distance = speed * time", we can formulate equations to solve this problem.

Let's call Leon's speed X, Michael's speed Y and the length of the driveway D.

If leon takes 13 hours alone, we can write the equation:

D = X * 13

If Michael helps Leon, we have this equation:

D = (X+Y) * 7

(The total speed is the sum of their speed, as they are working together)

Making the first equation equate the second, we have:

13*X = 7*X + 7*Y

7*Y = 6*X

X = (7/6)*Y

If we use this value of X in the first equation, we have:

D = 13*X = 13*(7/6)*Y = 15.1667*Y

So we have that Michael would take 15.1667 hours (15 hours and 10 minutes) to seal the driveway alone.

4 0

3 years ago

math 115 In a recent year, wind machines in a country generated 181.3 billion kWh of electricity, enough to serve over 17 millio

vivado [14]

Answer:

The percentage of of the total energy production was generated by wind machines is 4.43%.

Step-by-step explanation:

Percentage is the proportion of an item in the whole.

The formula is:

$Percentage=\frac{X}{N}\times 100$

It is provided that the wind machines in a country generated 181.3 billion kWh of electricity.

And the nation's total electricity production that year was 4,096 billion kWh.

Compute the percentage of of the total energy production was generated by wind machines as follows:

$Percentage=\frac{181.3}{4096}\times 100=4.43\%$

Thus, the percentage of of the total energy production was generated by wind machines is 4.43%.

7 0

3 years ago

Laticia randomly selected 25% of the seventh-grade students in her school and asked them their favorite season. Of the students

Vlad [161]

Answer:

D. 200

Step-by-step explanation:

Laticia doing her survey on a sample that has a size of about 25% of the population. That means the sample is approximately four times larger than the sample she takes. Unless its ratio or percentage, any data she takes will be 1/4 of the population. If 51 student of her sample choose summer as their favorite, predicted number on the population will be:

51 * (100%/25%)=

51 * 4= 204

The number will be around 200.

6 0

3 years ago

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Hey whats up just need elp with 4

vodka [1.7K]

Answer:

b/20 +8>5

b/20>-3

b>-60

5 0

3 years ago