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MrRa [10]
3 years ago
5

Roberto made a 74 on last week's math quiz. This week he made an 85 on

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
6 0

Answer:

His quiz score increased by about 7%.

Step-by-step explanation:

Take the two quiz scores and add them together to get 159.

Take the difference between the two quiz scores to get 11.

Divide the difference by the sum to get 0.0692 or about 7%.

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I need an in-depth answer
MAXImum [283]

Answer:

The three numbers are 29, 31, and 33.

Step-by-step explanation:

Let's imagine that the three consecutive odd integers are 2x−1, 2x+1, and 2x+3. And we are told the sum is 93 right? So, let's equal the three numbers to 93.

2x − 1 + 2x + 1 + 2x + 3 = 93

6x + 3 = 93

     -3     -3

-----------------

6x = 90

/6    /6

----------------

x = 15

Now, plug in x into 2x−1, 2x+1, and 2x+3 to find the three numbers.

2x − 1                   2x + 1                 2x + 3

2(15) - 1                2(15) + 1             2(15) + 3

30 - 1                    30 + 1                 30 + 3

= 29                      = 31                      = 33

6 0
3 years ago
Read 2 more answers
The length of her scale drawing is 8 inches, and the width is 14 inches. The actual length of the MP3 player is 4 centimeters, a
Korvikt [17]
If the question is, "What is the scale factor." That would be a scale (factor) of 2.
6 0
4 years ago
The product of n and 8​
Jlenok [28]

Answer:

8n

Step-by-step explanation:

The product of n and 8 means you will multiply n and 8. So, n x 8 is 8n.

8 0
3 years ago
5x-2y=-3 -2x-y=-6 método de reducción suma y resta con procedimiento y respuesta doy corona a quien me ayude en menos de media h
maw [93]

Answer:

(1, 4)

Step-by-step explanation:

5x-2y=-3 -2x-y=-6  =>

5x-2y=-3

-2x-y=-6   Multiply all three terms by -2:  4x + 2y = 12

Then we have:

5x-2y=-3

4x + 2y = 12

---------------------

 9x = 9 and so x = 1.  Then, using -2x - y = -6,  and substituting 1 for x:

-2(1) - y = -6, or

2 + y = 6, or

y = 4

Then the solution is (1, 4)

6 0
3 years ago
Write the equation of the line in slope-intercept form that is parallel given the equation and point.
KiRa [710]

Answer:

y = \frac{4x}{5}+\frac{42}{5}

Step-by-step explanation:

In order for two lines to be parallel, they must have the same slope. So, we know that the slope of the other line is 4/5.

We're given an ordered pair, so we can solve for b in the (slope-intercept form) equation y = mx + b

2 = \frac{4}{5}(-8) + b\\2 = \frac{-32}{5}+b\\b = 2 + \frac{32}{5}\\  b = \frac{42}{5}

y = \frac{4x}{5}+\frac{42}{5}

4 0
4 years ago
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