MATHEMATICS MIDDLE SCHOOL

What are the coefficents in the polynomial 7x^2-4x+6

Answers

Answer 1

Answer:

Hi There

The answer is D

7,-4

Hint : The coefficient is the number that multiply the variable

7x²-4x+6

7 and -4 is the coefficient

x² and x are the variables

6 is the constant

I hope that's help :)

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Zena and Audrey are on the same bowling team. The sum of their averages is 299. If Zena's average is 13 pins greater than Audrey's average, what is Zena's average?119
104
156
169

Answers

Easier than it looks, all you have to do is first subtract 13 from 299. You should get 286. Then, you just divide this number by two to get 143. Finally, since it asks for ZENA'S average, you add the 13 back to 143 to get the final answer of the average number of pins Zena took down, which is 156!

one year ago, a man was 8 times as old as his son. Now his age is equal to the square of his son' age. Find their present ages.

Answers

First of all, we know that the man's age was divisible by 8 one year ago. So, let's list a few numbers that are divisible by 8, and work from there.

8, 16, 24, 32, 40, 48, 56, 72, 80, 88, 96 are all divisible by 8.

We also know that his current age is the square of his son's age. So we can check the numbers that follow the multiples of eight to see if they'll work.

The subsequent numbers, in order, are

9, 17, 25, 33, 41, 49, 57, 73, 81, 89, 97

Now, let's list which ones are squares, meaning a number multiplied by itself is equal to anther number.

9 is the square of 3
25 is the square of 5
49 is the square of 7
81 is the square of 9

Only these four will work, but right now, ANY of these four will work. Let's use a little science to narrow it down.

It is scientifically improbable for a 9-year-old to have a 3-year-old son, so we'll rule that one out. It's also highly unlikely that an 81-year-old has a 9-year-old son, so we'll cross that off the list, as well.

This leaves a 25-year-old man with a 5-year-old son, and a 49-year-old man with a 7-year-old son, both of which are most likely.

At this point, you can choose whichever you'd like, or put down both as the answer.

The man and his son's present ages are either 25 and 5, or 49 and 7.

5.372 divided by 2 =please help

Answers

the answer is 2.686, and i am writing these extra characters to pass the 20 character qualifications.

The answer is
2.686

A bird flies at 12.5 meters per second. The wind speed is 4.5 meters per second.What is the speed of the bird when it flies with the wind?
What is the speed of the bird when it flies against the wind?
Enter your answer in the space provided.

Answers

Answer: The speed of the bird when it flies against the wind would be 8 meters per second

Sara put 7 boxes in her closet. Each box is for holding a different type of seashell. So far, there are 0 shells in each box. How many shells does Sara have? Tell what math you used to find the answer.