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hoa [83]
3 years ago
8

Help 8th grade math pls ;-;

Mathematics
1 answer:
Sever21 [200]3 years ago
6 0

Answer:

19.1 feet

Step-by-step explanation:

Length of the ladder = 20 feet

Distance from the ladder to the wall = 6 feet

Height of the ladder on the wall = x

x² + 6² = 20²

x² = 20² - 6²

x² = 364

x = 19.1 feet (Rounded to nearest tenth)

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64 percent of the animals shelter are dogs about what fraction of the animals at the shelter are dogs
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I think it would be 64/100 because 64 percent is most likely out of 100 percent

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3 years ago
Simplify the expression <img src="https://tex.z-dn.net/?f=-%5Cfrac%7B4x%2B7%7D%7B2%7D%20-%5Cfrac%7B3x-2%7D%7B2%7D" id="TexFormul
ExtremeBDS [4]

Answer:

-(4x + 7)/2 - (3x - 2)/2 = (-4x - 7 - 3x + 2)/2 = (-7x - 5)/2

8 0
3 years ago
karen drove 3/4 of a mile in 1/60 of an hour .At this rate,how many miles would she drive in one hour
amid [387]

Answer:

45 miles

Step-by-step explanation:

1/60 of one hour (60 minutes) equates to 1 minute

Karen is driving 3/4 of a mile in 1 minute to multiply 3/4 and 60 to get 45 miles

6 0
3 years ago
Find the value of x AND the value of each angle.
guapka [62]

Answer:

x=63

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Step-by-step explanation:

180-102=78

78-15=63

x=63

x+15=78

5 0
3 years ago
PLEASE HELP FAST
skad [1K]

Answer:

The unit vector u is (-5/√29) i - (2/√29) j

Step-by-step explanation:

* Lets revise the meaning of unit vector

- The unit vector is the vector ÷ the magnitude of the vector

- If the vector w = xi + yj

- Its magnitude IwI = √(x² + y²) ⇒ the length of the vector w

- The unit vector u in the direction of w is u = w/IwI

- The unit vector u = (xi + yj)/√(x² + y²)

- The unit vector u = [x/√(x² + y²)] i + [y/√(x² + y²)] j

* Now lets solve the problem

∵ v = -5i - 2j

∴ IvI = √[(-5)² +(-2)²] = √[25 + 4] = √29

- The unit vector u = v/IvI

∴ u = (-5i - 2j)/√29 ⇒ spilt the terms

∴ u = (-5/√29) i - (2/√29) j

* The unit vector u is (-5/√29) i - (2/√29) j

8 0
3 years ago
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