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3 years ago

Can someone answer this w²+7w-18

Mathematics

2 answers:

EleoNora [17]3 years ago

5 0

Answer:

Using the "AC Method" I got (w - 2) (w + 9)

Step-by-step explanation:

qaws [65]3 years ago

5 0

Answer:

(w−2)(w+ 9)

Step-by-step explanation:

<u>Grouping</u>

Step 1:

Use the sum-product pattern

w² + 7 − 18

w² + 9 − 2 −18

Step 2:

Common factor from the two pairs

w²+ 9 − 2 − 18w

( w+ 9) − 2( w+ 9)

Step 3:

Rewrite in factored form

(w + 9) − 2( w+ 9)

(w−2)(w+9)

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Alex Ar [27]

The rate of change for this function is 1/2.

In order to find the rate of change, you use the slope equation.

m (slope) = (y2 - y1)/(x2 - x1)

m = (4 - 2)/(9 - 5)

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3 years ago

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3 years ago

Read 2 more answers

Consumer Reports uses a 100-point customer satisfaction score to rate the nations major chain stores. Assume that from the past

zzz [600]

Answer:

(A) Mean = 84

(B) Variance = 118.714

Step-by-step explanation:

Data provided:

number of observations, n = 15

sample of 15 costco customer satisfaction scores follow

X $X-\bar{X}$ $(X-\bar{X})^2$

95 11 121

90 6 36

83 -1 1

64 -20 400

95 11 121

98 14 196

80 -4 16

83 -1 1

82 -2 4

93 9 81

86 2 4

80 -4 16

94 10 100

75 -9 81

62 -22 484

================================================

∑X = 1260 ∑= 1662

Now,

(A) Mean = $\frac{\textup{Sum of all observations}}{\textup{Total number of observations}}$

Mean = $\frac{\textup{1260}}{\textup{15}}$ = 84

(B) Variance = $\frac{\sum(X-\bar{X})^2}{n-1}$

Variance = $\frac{1662}{15-1}$

Variance = 118.714

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3 years ago

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Shalnov [3]

<span>The answer is f(n-1) because f(n - 1) The term is the output, and the one before n is n - 1.

So its D)</span>

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3 years ago