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MaRussiya [10]
4 years ago
14

Calculate the slope between the points: (4, -9) and (5, 1)

Mathematics
1 answer:
12345 [234]4 years ago
3 0

Answer:

The answer is A- m=10

Step-by-step explanation:

The way to find slope is known as "Rise over Run" meaning the increase of Y over the increase of X. The increase of Y is 10 because 1 - (-9) = 10. The increase of X is 1 because 5 - 4  = 1. 10 over 1, or 10 / 1, equals 10.

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How do you decide whether substitution is the best method to solve a system in three variables?
Ivan
<span>Select one equation and solve it for one of its variables.
In the other equation, substitute for the variable just solved.
Solve the new equation. 
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3 0
3 years ago
The perimater of the triangle is 30cm. its sides are in the ratios 1:3:2, then find its sides​
DiKsa [7]

Answer:

1 * 5 = 5cm

3 * 5 = 15cm

2 * 5 = 10cm

Step-by-step explanation:

1+3+2 = 6

then do 30 / 6  = 5 to find one part of the ratio

1 * 5 = 5

3 * 5 = 15

2 * 5 = 10

8 0
3 years ago
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3) Solve these problems that have more than one answer.
MaRussiya [10]

Answer:

225

Step-by-step explanation:

Mary = 3x (3 times Carey)

Carey = x

Barry = x/2 (Because Carey read twice as many as Barry, it means he read half the amount Carey did)

3x + x + x/2 = 405

4x + x/2 = 405

8x/2 + x/2 (treat these as fractions) = 405

9x/2 = 405

9x = 810 (cross multiply)

x = 90

Mary = 3(90)      270

Carey =              90

Barry = 90/2      45

Mary - Barry

270 - 45 = 225

Hope this helps! :)

5 0
3 years ago
Read 2 more answers
What is a fraction has both a negative denominator and numerator?
liubo4ka [24]
Negative divided by negative makes a positive
6 0
3 years ago
Is the sum of 1/2 and radical 5 over 15 rational or irrational
Lina20 [59]

Answer:

rational, irrational is like pi or \sqrt{-7}

Step-by-step explanation:

7 0
3 years ago
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