MATHEMATICS HIGH SCHOOL

What is the sum of the polynomials?(7x3 – 4x2) + (2x3 – 4x2)
5x3
9x3
5x3 – 8x2
9x3 – 8x2

Answers

Answer 1

Answer:

Answer: Last option is correct.

Step-by-step explanation:

Since we have given that

$7x^3-4x^2+2x^3-4x^2$

We need to find the sum of the polynomials:

So, we first collect the like terms:

$7x^3-4x^2+2x^3-4x^2\n\n=7x^3+2x^3-4x^2-4x^2\n\n=9x^3-8x^2$

Hence, the sum of polynomials is $9x^3-8x^2$

Therefore, Last option is correct.

Answer 2

Answer: 9x^3 - 8x^2 is the answer. to solve this you must distribute the sign across each parenthetical and then add the like terms (all cubed x variables added to cubed variables and all squared x variables added to squared variable)

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Kendra is buying bottled water for a class trip.She has 16 bottles left over from the last trip.She buy bottles by case to get a good price.Each case holds 24 bottles.How many cases will she to have to buy if she wants to have a total of 160 bottles of water??.
Which number is a factor of 100?08
Adela rode her bicycle 18.3 miles in 5 hours. Which gives the best estimate of how far Adela rode in 1 hour?
Find y on the triangle that has sides length of 7 and x
An arc on a circle measures 125°. The measure of the central angle, in radians, is within which range?

What is the measure of AC?
Enter your answer in the box. Enter only the numerical value.

Answers

Step-by-step explanation:

Angle BDC is an angle inscribed in a circle. As such it intercepts TWICE as many degrees of arc as its measure

so: 2 * (3x-1.5) = 3x+9

6x -3 = 3x+9

x = 4

then the arc AC = 3x+9 = 21 degrees

URGENT!! Please help me with this as soon as possible!!

Answers

Answer: Choice B.

The statement is valid because the measure of the vertices located in the center of the pentagon is the quotient of 360 and 5, and the sum of two base angles in the given isosceles triangle is 108.

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Explanation:

Check out the diagram below. I have added x and y such that

x = base angle

y = vertex angle (located adjacent to center of polygon)

The pentagon is sliced up like a cake into 5 equal portions. Each vertex angle is y = 360/5 = 72 degrees.

The two base angles x must add with the vertex angle y to get 180

(angle1)+(angle2)+(angle3) = 180

x+x+y = 180

2x+y = 180

2x+72 = 180

2x = 180-72

2x = 108

This is true for any one of the five triangles. Notice that for angle LMN, we can divide it into LMQ and QMN where Q is the center of the polygon. Both of these angles are x. Since we've shown 2x = 108, we can see that LMN must also be 108 as well.

Choice A is close, but we wouldn't use the exterior angle theorem. Choice B is the better answer.

You have just purchased a 6-lb bag of apples for $4.80 at a local produce stand. How much would you expect to pay for a 10-lb bag of apples?

Answers

First, find out how much money it cost per 1 lb of apples.

Divide $4.8/ 6 lbs

$0.8/ 1 lbs

Multiply amount per pound by cost

0.8 * 10 = 8

$8.00 for 10 lb bag of apples.

Tasha is planning an expansion of a square flower garden in a city park. If each side of the original garden is increased by 7 m, the new total area of the garden will be 169 m2. Find the length of each side of the original garden.

Answers

To find the original length you must take away the add-ons. To do so we know that they added 7 and A= l*l (or l squared). They added the 7 to the length so multiply 7*7 (49) subtract your answer from 169 (120) and that's your new area. To find the original length divide by 4 (I believe) and get 30m2

Answer:

Step-by-step explanation:

got it right on a quiz.

Ramon grew45 inches each year for the past 2 years. How many inches total has Ramon grown
in the past 2 years?

Answers

Answer:

Step-by-step explanation:

For each separate year Ramon grew 45 inches. They want to know how many inches he grew in two years. So you could find this two ways, either multiply 45 x 2 or add 45+45 and get the same answer, 90.

Lori rented a car for one day. The daily rental rate was $12.50 plus 25 cents per mile. The total cost of her rental was $46. How many miles did she drive that day?