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4vir4ik [10]
3 years ago
15

(8х + 2)(7х^2 + 6x - 7) Find the product

Mathematics
1 answer:
igomit [66]3 years ago
4 0
The product is 56x^3+62x^2-44x-14
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Hello. please help me step by step, thank you.
sweet [91]

Answer:

Step-by-step explanation:

he uses 3/4 cup of butter in each batch...and he made 2 1/2 batches..

so he used :

2 1/2 * 3/4 =

5/2 * 3/4 =

15/8 =

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4 years ago
Find 900 ÷ 90.<br> plz help
sashaice [31]

Answer:

the answer is 10

Step-by-step explanation:

900 ÷ 90

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8 0
3 years ago
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You estimate that a jar contains 68 marbles. The actual number is 60. Find the percent error. Round your answer to the nearest t
Alexandra [31]
Normally I'd put 0.1176 but since it's to the nearest tenth it is .1
7 0
4 years ago
Let f = {(x, y) ∈ R × R | xy = 2x + y + 1} There is at least one x ∈ R with no y ∈ R. Find all such problematic x ∈ R. Then rest
loris [4]

Answer:

Problematic x is x = 1

Step-by-step explanation:

Equation:

xy= 2x + y + 1

xy - y = 2x + 1

y(x-1) = 2x + 1

y = (2x+1)/(x-1)

The problematic x is such that when the denominator of the function is 0

x - 1 = 0

x = 1 (the problematic x)

So the domain of f is: x is the subset of R (real number) with the exception of x =/ 1 (x not equal to 1)

To prove this, we can plot the graph and in the graph we can see that as the value of x approaches from negative values to 1, y value will approaches negative infinity, and as the value of x approaches from large positive numbers, y value approaches infinity.

In other words, we'll see an assymptote at x=1

To prove that it is a function, we can do vertical line test by drawing vertical lines accross the graph. We'll see that each line crosses the equation line once hence proving the equation as a function

5 0
3 years ago
PLEASE HELP What is the sum of the first 43 terms of the sequence?
Sav [38]

Answer: the answer is 521

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