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kirill [66]
3 years ago
9

What two numbers add up to 18 and multiply to 80

Mathematics
1 answer:
mestny [16]3 years ago
4 0

Answer:

8 and 10

Step-by-step explanation:

First, let's look at the factors of 80.

1 • 80 = 80

2 • 40 = 80

4 • 20 = 80

5 • 16 = 80

8 • 10 = 80

Look at each pair and evaluate their sum.

1 • 80 = 80

  • 1 + 80 = 81

2 • 40 = 80

  • 2 + 40 = 42

4 • 20 = 80

  • 4 + 20 = 24

5 • 16 = 80

  • 5 + 16 = 21

8 • 10 = 80

  • 8 + 10 = 18

Our last pairing multiplies to 80 and adds up to 18. Therefore, your answer is 8 & 10.

Hope this helps!

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He was slower the second time because 1/10 > 1/12
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3 years ago
18 first-graders and 72 other students attended a school assembly. What percentage of the students at the assembly were first-gr
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Step-by-step explanation:

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Read 2 more answers
What is the equation of the line connecting (1,5) and (4,14)?
german
To find the slope of the line:
(y2-y1)/(x2-x1)
(14-5)/(4-1)=(9)/(3)=3

Only one of your 4 possible answers has 3 as a slope. However, plugging in each point into the y=mx+b equation, the y-intercept consistently comes out as 2..
y=mx+b
14=3(4)+b  b=2
5=3(1)+b    b=2
y=3x+2
If there is a consistent, positive slope (from your question, this does not seem to have a quadratic as an option), 3x+5 is not even a viable solution because x=1 when the y-value is 5 (and thus no other x value {0} could have a y-value of 5). It seems as though you have a typo on your hands. Hopefully this helps?
3 0
3 years ago
What is the slope of the line that passes through the points (-2,-5) and (18, –5)?
kumpel [21]

Answer:

0

Step-by-step explanation:

Slope = \frac{y2-y1}{x2-x1}

(-2,-5) = (x1,y1)

(18,-5) = (x2,y2)

Slope = \frac{-5+5}{18+2}

          = \frac{0}{20}

          = 0

4 0
3 years ago
Need help pls show work
Ne4ueva [31]

Answer:

C

Step-by-step explanation:

A 3x =\ x^3

B 12x - 10 =\ 14x-10

C 12x + 16x = 12x +16x

7 0
3 years ago
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