3 years ago

7b^2-63b+140 Factor the polynomial (show your work)

Mathematics

1 answer:

Natali [406]3 years ago

6 0

Answer:

7 (b - 5) (b- 4)

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Use the definition of continuity to determine whether f is continuous at a. f(x) = 5x+5 a = -5 Question

Andrej [43]

ANSWER

$lim_{x \to - 5}(f(x)) = f( - 5)$

EXPLANATION

If f(x) is continuous at

$x = a$

Then,

$lim_{x \to a}(f(x)) = f(a)$

The given function is

$f(x) = 5x + 5$

$f( - 5) = 5( - 5) + 5$

$f( - 5) = - 25 + 5 = - 20$

$lim_{x \to - 5}(f(x)) = 5( - 5) + 5$

$lim_{x \to - 5}(f(x)) = - 20$

Since,

$lim_{x \to - 5}(f(x)) = f( - 5)$

The function is continuous at

$x = - 5$

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2 years ago

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What does h(40) = 1700 mean in terms of the poblem?

choli [55]

40 is under the number of training hours and the $1700 is under the pay column.

So for 40 hours of training the person would make $1700.

The answer is D.

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3 years ago

PLEASE ANSWER IN ONE MINUTE WILL MARK BRAINLIST

PSYCHO15rus [73]

Answer:

x=3

Step-by-step explanation:

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2 years ago

Which fraction is equivalent to 38%?<br> A. 3/8<br> B. 9/25<br> C. 19/50<br> D. 3 4/5

Virty [35]

Answer:

Step-by-step explanation:

38% = 38/100

= 19/50

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3 years ago

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Find the zeros of the polynomial function and state the multiplicity of each.

zheka24 [161]

$\bf f(x) = 4(x + 7)^2(x - 7)^3\implies 0 = 4(x + 7)^2(x - 7)^3
\\\\\\
0=(x+7)^2(x-7)^3\implies 
\begin{cases}
0=(x+7)^7\\
\qquad 0=(x+7)(x+7)\\
\qquad -7=x\\
\qquad -7=x\\
----------\\
0=(x-7)^3\\
\qquad 0=(x-7)(x-7)(x-7)\\
\qquad 7=x\\
\qquad 7=x\\
\qquad 7=x
\end{cases}$

the -7 is found there twice, so it has a multiplicity of 2
the +7 is there thrice, so it has multiplicity of 3

7 0

2 years ago