3 years ago

Nolan drew a right triangle. how many acute angles did he drew?

1 answer:

4 0

2 acute angles because all of the angles of the triangle must add up to 180 degrees. If you used 90 degrees already you only have 90 degrees left to make the other two angles.

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X is a normally Distributed random variable with a standard deviation of 4.00. Find the mean of X when 64.8% of the area lies to

Cerrena [4.2K]

Answer:

Step-by-step explanation:

σ = 4 ; μ =?

8.52 to the left of X

P(X < 8.52) = 64.8%

P(X < 8.52) = 0.648

Using the Z relation :

(x - μ) / σ

P(Z < (8.52 - μ) / 4)) = 0.648

The Z value of 0.648 of the lower tail is equal to 0.38 (Z probability calculator)

Z = 8.52 - μ / 4

0.38 = 8.52 - μ / 4

0.38 * 4 = 8.52 - μ

1.52 = 8.52 - μ

μ = 8.52 - 1.52

μ = 7

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3 years ago

Giving brainiest if you can answer 3 and 4 Also worth 25 points

Nimfa-mama [501]

Answer:

y = x

Step-by-step explanation:

We can see points:

(1, 1), (2, 2), (3, 3) etc.

It shows the proportional relationship:

y = x, where the slope is 1

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2 years ago

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Find the length of the third side to the nearest tenth 7 1

AlexFokin [52]

Answer:

10.7

Step-by-step explanation:

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2 years ago

Which is a correct definition of perpendicular lines?

djyliett [7]

It would be B: a set of points that extends infinitely in two directions

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2 years ago

Find the solution for the system of linear equations by elimination: -3x + y = 2, 4x - y = 4 Explain how you found the solution.

viktelen [127]

Answer:

$x = 6 \\ y = 20$

Step-by-step explanation:

1. Add the equations. The y's cancel out.

$+ 4x - y = + 4 \\ - 3x + y = + 2 \\ - - - - - - - \\ x = 6$

2. Embed x in either equation and find y.

$4x - y = 4 \\ 4(6) - y = 4 \\ 24 - y = 4 \\ 20 - y = 0 \\ y = 20$

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3 years ago