Please help me with this, i just need this question and i'll be able to graduate

Answers

Answer 1

Answer: easey, just multiply everybody and add the exponents for like terms remember
(a^m)(a^n)=a^(m+n)
also
(ab)c=a(bc)
so

-4x³y²(7xy⁴)=
-4*x³*y²*7*x*y⁴=
-4*7*x³*x*y⁴*y²=
-28*x⁴*y⁶
-28x⁴y⁶

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Darnell's car used 8 gallons of gasoline to travel 340 miles. after a mechanic worked on the car, it used 7 gallons of gasoline to travel 350 miles. If the price of the gasoline was approximately $4.00 per gallon, how much lest to the nearst cent per mile, did it cost to run the car after the mechanic worked on it?
A man's regular pay is $3 per hour up to 40 hours. Overtime is twice the payment for regular time If he was paid $168, how many hours overtime did he work?

Find the diameter of the base of a right cylinder if the surface area is 128(pi) and the height is 12cm.

Answers

$d=2r\n A=128 \pi \n A=2 \pi r^(2) +2 \pi rh \n\n 2 \pi r^(2) +2 \pi rh = 128 \pi \n 2 r^(2) +2rh = 128\n 2 r^(2)+24r-128=0\n r^(2)+12r-64=0\n delta=400\n r_(1/2) = -16/4 \n r=4cm\n d=8cm\n$

Radius / diameter as a length cannot be negative, that's why '-16' is wrong.

1/5 times 3/4 times 5/7 in simplest form

Answers

The equivalent value of the fraction is A = 3/28

Given data ,

Let the equation be represented as A

Now , the value of A is

Let the first fraction be p = 1/5

Let the second fraction be q = 3/4

Let the third fraction be r = 5/7

Now , A = pqr

On simplifying the equation , we get

where A = ( 1/5 ) ( 3/4 ) ( 5/7 )

A = ( 1 x 3 x 5 ) / ( 5 x 4 x 7 )

A = 15/140

On further simplification , we get

A = 3/28

So , the left hand side of the equation is equated to the right hand side by the value of 3/28

Therefore , the value of A = 3/28

Hence , the fraction is A = 3/28

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the answer is going to be 3/28 : )

Will is building a playhouse for his cousin. He wants the playhouse to be 50 percent taller than his cousin, who is 46 inches tall. How tall should the playhouse be?

Answers

Answer:

69 inches

Step-by-step explanation:

mutiply 46 and .50 then add that to 46 then you get your answer

Final answer:

The playhouse should be 69 inches tall.

Explanation:

To ascertain the height of the playhouse, we embark on a straightforward calculation. It involves deriving 50% of Will's cousin's height and subsequently adding this value to the cousin's actual height. Starting with the cousin's height, which is 46 inches, we calculate half of it by multiplying 46 by 0.5, yielding 23 inches. This represents half of the cousin's height.

To determine the playhouse's overall height, we combine this value with the cousin's original height: 46 inches (cousin's height) + 23 inches (50% of cousin's height) equals 69 inches in total. Therefore, the height of the playhouse stands at 69 inches. This method showcases the application of percentages and simple addition to solve real-world problems, making it a valuable skill in practical mathematics.

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Larry runs 2.5 miles and sees a total of 12 dogs. If Larry runs for a total of 8 miles, approximately how many dogs will Larry see?

Answers

Answer:

38.4

Step-by-step explanation:

We have 8/2.5=3.2 What does this mean? Well, it means that (if the miles are porportional to the dogs) that means he will see 3.2 as many dogs. So, we have 12*3.2=38.4, or 38 if the homework is asking for a rounded number. Hope I helped!

Larry sees 12 dogs per 2.5 miles.

Your trying to find out how many dogs Larry sees in 8 miles.

$(2.5)/(12) = (8)/(x)$

So you want to find x.

To go from 2.5 to 8, you have to multiply by 3.2

So do the same thing to the denominator; 12 × 3.2=38.4

Since there are 38.4 dogs, you have to round down because 0.4 dogs is no dog.

Larry sees 38 dogs in 8 miles.

♡ Hope this helped! ♡

❀ 0ranges ❀

If the rate 30 hot dogs per 5 minutes is reduced to a unit rate, the result is . Do not include units in your answer.

Answers

The notion of a unit rate is how much will happen in a unit of measurement. The question indicates there are 30 hotdogs in a total of 5 minutes, averaging 6 hotdogs per minute, or .1 hotdogs per second. This is done by dividing the total into equal 'chunks' of that unit of time.The question therefore does not make sense to "not include units".

I think it would be 6 hotdogs per 1 minute. Because that's a rate, and rates can be written as fractions,and fractions are division problems, so 30 divided by 5 is 6.

Solve this..➕+ ➕ + ➕+ ➕=30
Fill the boxes using (1, 3, 5, 7, 9, 11, 13, 15)
U can also repeat the numbers..

Answers

These are all possible combinations:
1 , 1 , 13 , 15
1 , 3 , 11 , 15
1 , 3 , 13 , 13
1 , 5 , 9 , 15
1 , 5 , 11 , 13
1 , 7 , 7 , 15
1 , 7 , 9 , 13
1 , 7 , 11 , 11
1 , 9 , 9 , 11
3 , 3 , 9 , 15
3 , 3 , 11 , 13
3 , 5 , 7 , 15
3 , 5 , 9 , 13
3 , 5 , 11 , 11
3 , 7 , 7 , 13
3 , 7 , 9 , 11
3 , 9 , 9 , 9
5 , 5 , 5 , 15
5 , 5 , 7 , 13
5 , 5 , 9 , 11
5 , 7 , 7 , 11
5 , 7 , 9 , 9
7 , 7 , 7 , 9

There can be a lot many solutions for the above question
some of them are
9+11+5+5=30
it can also be solved as
15+5+5+5=30
also
13+7+5+5=30