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Musya8 [376]
3 years ago
11

Bill scored 78, 63, 81, 86, and 74 on the first five math tests. Round each score to the nearest 10 to find an estimate of the t

otal points Bill scored.
Mathematics
1 answer:
Flura [38]3 years ago
7 0

Answer:

The estimate is 380

Step-by-step explanation:

78 rounds to 80

63 rounds to 60

81 rounds to 80

86 rounds to 90

74 rounds to 70

Sum             -----------

                        380

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(2w+3x)(w-5x) - (3w+7x)(w-7x)
S_A_V [24]

Answer:

-w²+49x²-8wx

Step-by-step explanation:

if you want how I did this it's quite lengthy so let me know if you want the process

8 0
3 years ago
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Solve x2 + 10x = 24 by completing the square. Which is the solution set of the equation?
Dominik [7]

Answer:

(-12, 2).

Step-by-step explanation:

x^2 + 10x = 24

Divide the + 10 by 2  to give the following identity:

x^2 + 10x is equivalent to (x + 5)^2 - 25 so:

(x + 5)^2 - 25 = 24

(x + 5)^2 = 49

Taking square roots:

x + 5 = +/- 7.

x = -5 + 7 = 2

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8 0
4 years ago
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(Many Points, Please help!)
julia-pushkina [17]

Answer:

<h2>B] (-10, 0)</h2>

Step-by-step explanation:

The x-intercepts are where the graph crosses the x-axis.

<em>(look at the picture).</em>

<em />

The y-intercepts are where the graph crosses the y-axis.

<em>(look at the second picture)</em>

<h3>(0, -2)</h3>

3 0
3 years ago
Wilma earns $9 per hour at her job. Then she spent $15 on a birthday gift for her best friend. Write an expression to represent
frozen [14]

Answer:

Wilma has $12.

Step-by-step explanation:

Since we don't know how many hours she worked, we know that Wilma earned 9x dollars at her job. Then she spends $15, so we can just subtract 15 from 9x.

9x-15

We can just replace the x with 3 to get:

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Hence, Wilma has $12.

3 0
3 years ago
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vova2212 [387]

Answer:

5

Step-by-step explanation:

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5 0
3 years ago
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