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4 years ago

How do u do this plz help me, also can some one tell me what is a adjacent angle and a vertical angle plz

Mathematics

1 answer:

Vsevolod [243]4 years ago

6 0

Adjacent AnglesTwo angles areAdjacent if they have a common side and a common vertex. ... VerticalAnglesVertical Angles are the anglesopposite each other when two lines cross.They are called "Vertical" because they share the same Vertex.Vertical Angles are Congruent/equivalent

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In triangle ABC, A is a right angle and M B=45°. Find BC. If you answer is not an integer, leave it in simplest radical form.

Nataly_w [17]

Step-by-step explanation:

- In a right triangle, if ∠B is 45°, then ∠C is too.

-- Since ∠B and ∠C are equal, the sides opposite them

are equal too. This is an isosceles right triangle. Its legs

are equal.

-- (The hypotenuse)² = (one leg)² + (the other leg)²

= (12-ft)² + (12-ft)²

= (144 x 2)

The hypotenuse = √(144 x 2) = 12√2 .

LOL

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3 years ago

Pleas help me pleas<br> help

DaniilM [7]

Answer: planet c
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3 years ago

Lin rode a bike 20 miles in 150 minutes. If she rode at a constant speed, how far did she ride in 15 minutes? How long did it ta

coldgirl [10]

Hey there! :)

Answer:

First part: 2 miles.

Second part: 45 minutes

Third part: 8 mph.

Step-by-step explanation:

We can divide this question into 3 parts.

Begin by solving for the distance traveled after 15 minutes by creating a ratio:

$\frac{20 mi}{150min} = \frac{x}{15 min}$

Cross multiply:

20 · 15 = 150 · x

300 = 150x

300/150 = 150x/150

x = 2 miles.

2nd part: How long it took her to ride 6 miles.

Set up another ratio similar to the one used before:

$\frac{20 mi}{150min} = \frac{6mi}{x min}$

Cross multiply:

20 · x = 6 · 150

20x = 900

20x/20 = 900/20

x = 45 minutes.

3rd part:

For this part, we will need to convert from minutes to hours.

$\frac{20 mi}{150 min}* \frac{60 min}{1 hr} = \frac{1200mi}{150hr} = 8 mi/h$

Therefore, her speed is 8 mph.

5 0

3 years ago

Plz help me with my hw plz it's proportional relationships and please include the equation

Sphinxa [80]

The constant of proportionality is k = y/x.....k = 40/200 = 1/5

y = mx + b
slope(m) = 1/5
(200,40)...x = 200 and y = 40
now we sub...we r looking for b, the y int

40 = 1/5(200) + b
40 = 40 + b
40 - 40 = b
0 = b

so ur equation is : y = 1/5x

if pop star earned 800
800 = 1/5x
800 * 5 = x
4000 = x

3 0

3 years ago

Is 52+(-2.5) negative.

Alex777 [14]

Answer:

No, it is positive.

Step-by-step explanation:

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3 years ago