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Hunter-Best [27]
3 years ago
10

Evaluating an Expression

Mathematics
2 answers:
marysya [2.9K]3 years ago
6 0

Answer:

Use the distributive property and expand 28, then distribute the 4 to 20 and the 4 to 8. Then you have 18 + 80 + 32. Use commutative property to reverse the order of 32 and 80 so that 18 and 32 are friendly numbers to add.

Step-by-step explanation:

Anna35 [415]3 years ago
5 0

Answer:

130

Step-by-step explanation:

18+(4x28)

=18+112

=130

Remember PEMDAS!

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Which explains how to show that
alexgriva [62]

Answer:

  c.  Substitute

Step-by-step explanation:

A graph of the function on the left shows the parabola touches the x-axis at x = -8/3. That is, the vertex is on the x-axis. It crosses the y-axis at y = 64.

<h3>Show a value is a root</h3>

A given solution to an equation can be verified by substituting that value into the equation an showing the result is a <em>true statement</em>. Here, the value x=-8/3 is a root of the given equation because that value makes the equation true.

  9\left(-\dfrac{8}{3}\right)^2+48\left(-\dfrac{8}{3}\right)+64=0\\\\9\left(\dfrac{64}{9}\right)-\left(\dfrac{48\cdot8}{3}\right)+64=0\\\\64-\dfrac{3\cdot2\cdot8\cdot8}{3}+64=0\\\\64-2\cdot64+64=0\\\\0=0\qquad\text{True}

6 0
2 years ago
A sofa regularly sells for $510. The sale price is $469.20. Find the percent decrease of the sale price from regular price.
Westkost [7]

Answer:

8% decrease

Step-by-step explanation:

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3 0
3 years ago
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aksik [14]

Answer:

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Step-by-step explanation:

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=32x+14

4 0
3 years ago
Which equation is equivalent to 8x +3(x-5) -5(x -4)<br> 6x+35<br> 6x +1<br> 6x -5<br> 43x
user100 [1]

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
There are 35 tickets in a bag and the ratio of winning tickets to losing tickets is 1 to 4. How many of each kind of ticket are
n200080 [17]

Answer: Number of winning tickets =7 and Number of losing tickets = 28 .

Step-by-step explanation:

Given: Total tickets = 35

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=\dfrac{1}{5}\times35\\\\=7

Number of losing tickets = \dfrac{4}{5}\times35

=4\times7=28

Hence, Number of winning tickets =7 and Number of losing tickets = 28 .

8 0
3 years ago
Read 2 more answers
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