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galina1969 [7]
2 years ago
7

A lumberjack can cut a log into 5 pieces in 20 minutes. How long does it take to cut a log of the same size and shape into 7 pie

ces? If you dont have the correct answer please dont comment
Mathematics
1 answer:
Nitella [24]2 years ago
8 0

Answer:

28minutes

Step-by-step explanation:

Use this simple trick, it can be used almost everywhere

Time taken pieces

20mins 5

? 7

An x shape is always multiply and straight line is divide

So (7 x 20) ÷5

If u still don't understand, just comment again

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Solve the system by substitution.<br> y + 4 = x <br> 10x + 2y = 16
Leno4ka [110]

Answer:

  • (2, -2)

Step-by-step explanation:

<u>Given system:</u>

  • y + 4 = x
  • 10x + 2y = 16

<u>Substitute x into the second equation:</u>

  • 10(y + 4) + 2y = 16
  • 10y + 40 + 2y = 16
  • 12y = -24
  • y = -2

<u>Find x:</u>

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  • x = 2
5 0
3 years ago
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What is the slope of a line that is perpendicular to the line whose equation is 3x+5y=4?
kap26 [50]

Answer:

5/3 or 1.67

Step-by-step explanation:

Find the slope of the original line

3x+5y=4                Subtract 3x from both sides

5y = - 3x + 4           Divide both sides by 5

y = (-3/5)x + 4

The original line has a slope of - 3/5 or - 0.6

Find the slope of the perpendicular line

m1 * m2 = - 1

m1 = - 3/5

m2 = -1/(-3/5)

m2 = 5/3

The slope of the perpendicular line is

5/3 or 1.67

8 0
3 years ago
Find the slope of (0,0) (6,8)
lara31 [8.8K]

Answer:

8/6 or 4/3

Step-by-step explanation:

Rise divided by run. Rise is difference in y values. 8-0=8

Run is difference in x values 6-0=6

Divide 8/6 then simplify. 4/3

8 0
3 years ago
Markus scored 85, 92, 82, and 94 on the first four tests of the semester. His teacher has not yet told him his score on
mixer [17]

Answer:

b

Step-by-step explanation:

just got it right

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3 years ago
What is 315 times 30
tia_tia [17]
9,450
hope I helped....
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3 years ago
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