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LenKa [72]
3 years ago
12

Hello please help i’ll give brainliest

Mathematics
1 answer:
timofeeve [1]3 years ago
4 0

Explanation:

4. 81

5. 11

6. 9

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1 cm = 500km the ratio is 1 to
Murrr4er [49]

Answer:

1:500

Step-by-step explanation:

Since it has already given you the conversion factor, the ratio is 1:500, where every 1 cm is 500 km.

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ValentinkaMS [17]

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A 4 metre ladder is placed against a vertical wall.
Black_prince [1.1K]

Answer:

Original position: base is 1.5 meters away from the wall and the vertical distance from the top end to the ground let it be y and length of the ladder be L.

Step-by-step explanation:

By pythagorean theorem, L^2=y^2+(1.5)^2=y^2+2.25 Eq1.

Final position: base is 2 meters away, and the vertical distance from top end to the ground is y - 0.25 because it falls down the wall 0.25 meters and length of the ladder is also L.

By pythagorean theorem, L^2=(y -0.25)^2+(2)^2=y^2–0.5y+ 0.0625+4=y^2–0.5y+4.0625 Eq 2.

Equating both Eq 1 and Eq 2: y^2+2.25=y^2–0.5y+4.0625

y^2-y^2+0.5y+2.25–4.0625=0

0.5y- 1.8125=0

0.5y=1.8125

y=1.8125/0.5= 3.625

Using Eq 1: L^2=(3.625)^2+2.25=15.390625, L=(15.390625)^1/2= 3.92 meters length of ladder

Using Eq 2: L^2=(3.625)^2–0.5(3.625)+4.0625

L^2=13.140625–0.90625+4.0615=15.390625

L= (15.390625)^1/2= 3.92 meters length of ladder

<em>hope it helps...</em>

<em>correct me if I'm wrong...</em>

4 0
3 years ago
QUESTION 4
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I think D is the correct answer
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Which inequality represents this sentence ? 7 5 is greater than 6 2
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the way I was taught it is that the < and > are alligators and the alligator mouth always opens for the bigger number, because he is hungry
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