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3 years ago

Find the height of the triangle if the area is 36 m 2

Mathematics

1 answer:

n200080 [17]3 years ago

3 0

Answer:

Area=1/2bh

Given area of 36m^2

1/2(x)(x-1)=36

Multiply both sides by 2 to remove deminator

(x)(x-1)=72

X^2-x=72

X^2-x-72=0 then factor

(x-9)(x+8)=0

X=9,-8 however since area must be positive, take the absolute value of 8

1/2(9m*8m)=36m^2

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When Klorina swims with the current, she swims 10 km in 2 h. Against the current, she can swim only 8 km in the same time. How f

nasty-shy [4]

Answer:

Klorina's rate in still water is 4.5 km/h

Current's rate is 0.5 km/h

Step-by-step explanation:

Let

x km/h = Klorina's rate in still water

y km/h = current's rate

With the current (current helps):

Distance = 10 km

Time = 2 hours

Rate = x + y km/h

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Against the current:

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Time = 2 hours

Rate = x - y km/h

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Divide both equations by 2:

$x+y=5\\ \\x-y=4$

Add these equations:

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Subtract these two equations:

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3 years ago

The volume of a pyramid is 1/3 the volume of a prism ? True False

marissa [1.9K]

Answer: True

Step-by-step explanation:

Prism volume = lwh

Pyramid Volume = lwh/3

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3 years ago

What slope is perpendicular to x + 4y = 12

myrzilka [38]

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Find mystery number

In-s [12.5K]

The number is less than 190,000 and greater than 180,000

5,000 more than the number has 187 thousands

2000 less than the number has 4 hundreds

180, 000 <n> 190, 000

180,000 + 2000 = n = 5000-187, 000

182,000 = n = 182, 000

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Hope this was able to help you

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3 years ago