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Alina [70]
2 years ago
8

What is the product of 5x + 3 and 8x2 – 2x + 5? A) 40x3 + 14x2 – 19x – 15 B) 40x3 + 14x2 – 31x – 15 C) 40x3 + 34x2 + 31x + 15 D)

40x3 + 14x2 + 19x + 15

Mathematics
2 answers:
kenny6666 [7]2 years ago
8 0

Answer:

D is the answer

Step-by-step explanation:

zimovet [89]2 years ago
3 0

Answer: D: 40x3 +14x2+19x+15

Step-by-step explanation:

(5x + 3) (8x2 - 2x + 5)

5x ( 8x2 - 2x + 5) +3 ( 8x2 - 2x + 5)

expanding the bracket

(40x3 - 10x2 + 25x) + ( 24x2 - 6x +15)

removing the bracket

40x3 - 10x2 + 25x + 24x2 - 6x + 15

collecting like terms

40x3 - 10x2 + 24x2 + 25x - 6x + 15

40x3 + 14x2 +19x + 15

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Write each equation in slope-intercept form.
Alexxx [7]

Answer:

A. y = -3/2x + 1

B. y = -5/3x + 10

C. y = -x + 6/5

Step-by-step explanation:

A. You just have to isolate the y so divide by 4: y = -3/2x + 1

B. 3y = -5x + 30

Divide by 3: y = -5/3x + 10

C. -5x + 6 = 5y

Divide by 5: -1x + 6/5 = y OR y = -x + 6/5

5 0
3 years ago
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Suppose you want to learn more about the heights of the buildings in New York City. How would you choose a sample of the buildin
natulia [17]

Answer:

I'd use a Non-probability Sampling Method.

Explanation:

The question is already laced with criteria - Heights of Buildings in New York.

This means that there are certain buildings that won't fit in the sample. In a non-probability sample, objects or subjects are elected based on specified criteria that are not random. This means that not all objects/subject have a c<em>hance</em> of being included in the sample.

It is assumed that the question/assignment centers around high rise buildings.

Therefore, one storey buildings and bungalows that are within and outside New York will not be included in the sample.

Under the Non-Probability Sampling Method, it is essential to note that there are other subgroupings of sampling techniques. They are:

  1. Convenience Sample
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Cheers!

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2 years ago
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A pound of chocolate costs 8 dollars. Ann buys p pounds. Write an equation to represent the total cost c that Ann pay
aleksandrvk [35]

Answer:

Since it is 6 dollars per pound, his total cost c is 6 times p...thus

c = 6p

Hope this helps and hopefully I can get brainliest.

5 0
3 years ago
Please help don’t get it
posledela

Answer:

B

Step-by-step explanation:

Whenever you are asked to find the number of square feet covered by something, you are finding an area. To find the area of Jason’s circle, you first need to figure out if you have been given the radius or the diameter. By definition, the diameter of a circle is the longest distance across the circle, so we know here that the diameter is 8 feet. This means that the radius is 4 feet. So...

A = π(4)2

= 16π

≈ 50.2 square feet

So, Jason’s circle will cover about 50.2 square feet of his wall (and B is the closest one to that)

5 0
3 years ago
I need help quick please
notsponge [240]

Answer:

1/2 i think i sm not sure

Step-by-step explanation:

i am answering because i realy need brainliest have a wonderful day goodluck

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3 years ago
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