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mixas84 [53]
2 years ago
13

1

Mathematics
2 answers:
nasty-shy [4]2 years ago
5 0

Answer:

B

hope this helps :)

zysi [14]2 years ago
3 0

Answer:

D

Step-by-step explanation:

to find the zeros, equate f(x) to zero, that is

(x - 7)(x + 8) = 0

equate each factor to zero and solve for x

x - 7 = 0 ⇒ x = 7

x + 8 = 0 ⇒ x = - 8

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Which expression represents the same solution as (4) (negative 3 and StartFraction 1 over 8 EndFraction? (4) (negative 3) + (4)
elena-s [515]

Answer:

Option B.

Step-by-step explanation:

The given expression is

(4)(-3\dfrac{1}{8})

We need an expression Which represents the same solution as the given expression.

It can be written as

(4)[-(3+\dfrac{1}{8})]

(4)[-3-\dfrac{1}{8}]

(4)(-3)+(4)(-\dfrac{1}{8})

Since (4)(-3)+(4)(-\dfrac{1}{8}) is equivalent to given equation, therefore this equation represents the same solution as the given expression.

Hence, option B is correct.

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3 years ago
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What is the domain of f(x)=square root of 9-14x
UkoKoshka [18]

Answer: 6.9

Step-by-step explanation:

3 0
2 years ago
Bella is making button barrettes. She allows each of her friends to reach into her bag of buttons and randomly select a color. T
bija089 [108]
Pink 30/240

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3 years ago
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] Monica Geller, head chef at Allesandro's and is looking to update the commercial equipment in her kitchen and bar that will al
liubo4ka [24]

Answer:

The maximum amount that should be spent on the upgrade is $38,298,000.

Step-by-step explanation:

Let the initial purchase be <em>x</em>.

The ROI = 15% of <em>x</em> = 0.15<em>x</em>

At the end of 4 years, salvage value = 10% of <em>x</em> = 0.1<em>x</em>

<em />

Current income per day = $16 × 230 = $3680

Expected income per day = $21 × 245 = $5145

Increase in income per day = $5145 - $3680 = $1465

For 4 years (assuming a year is 365 days),

Increase in income = $1465 × 365 × 4 = $2138900

Maintenance and utility cost for 4 years = 4 × $56000 = $224000

At the end of 4 years,

ROI = $2138900 + salvage value = $2138900 + 0.1<em>x</em> - $224000

0.15<em>x</em> = $1914900 + 0.1<em>x</em>

0.05<em>x</em> = $1914900

<em>x</em> = $38298000

5 0
2 years ago
Read 2 more answers
Identify the values that should be written to complete the X diagram.
cestrela7 [59]

Answer:

See the attachment for what goes on your X diagram.

Rewrite: x² -7x +4x -28

Grouping: (x² -7x) +(4x -28) = x(x -7) +4(x -7) = (x +4)(x -7)

Step-by-step explanation:

The given quadratic is ...

... x² -3x -28 . . . . . a=1, b=-3, c=-28

a) The value at the top of the X diagram is the product a·c = 1·(-28) = -28.

The value at the bottom of the X diagram is the coefficient b = -3.

The values on the sides of the diagram are the factors of -28 that add up to make -3. These are -7 and 4. That is, ...

(-7)·(4) = -28

(-7)+(4) = -3

b) Since the two values on the sides of the diagram add up to give "b", the value of "b" in the equation can be rewritten as the sum of these two numbers. Doing that, we have ...

... x² -3x -28

... = x² +(-7+4)x -28

... = x² -7x +4x -28 . . . . . . order does not matter. It could also be x² +4x -7x -28

c) We can group pairs of terms in the rewritten expression and factor each pair.

... = (x² -7x) +(4x -28) . . . . . first pair has a common factor of x; second pair, 4

... = x(x -7) +4(x -7) . . . . . . . these terms now have a common factor: (x -7)

... = (x +4)(x -7) . . . . . . . . . . the complete factorization of x² -3x -28

3 0
3 years ago
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