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Pachacha [2.7K]
3 years ago
7

Please help on this and please explain how you solved it!

Mathematics
1 answer:
gayaneshka [121]3 years ago
6 0
You start with the initial amount of rain (-11) and then work through the problem. The first part has you adding 1/2 seven times so you end up with -11 + 1/2(7) = -7.5. However it then drops 2 1/4 for three months so you do -7.5 - 2 1/4(3) = -14 1/4
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2 vertical buildings are 42 metres apart and the shorter building is 135m high. The angle of elevation from the top of the short
ipn [44]

Answer:

Step-by-step explanation:

base=42 m

height=h=?

base angle θ=60°

tan 60=h/42

h=42tan 60=42√3≈72.75 m

height of taller building=135+42√3 m≈135+72.75≈207.75 m≈208 m

6 0
2 years ago
How to solve the equation
tatiyna

Answer:

ha

Step-by-step explanation:

hahaha thanks for the points ha

8 0
2 years ago
Suppose the discrete random variable X has the probability distribution below:
Talja [164]

(a) P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.11 + 0.52 + 0.19 = 0.82

(b) P(X ≥ 1) = P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) = 0.52 + 0.19 + 0.12 + 0.06 = 0.89

(c) µ = 0×0.11 + 1×0.52 + 2×0.19 + 3×0.12 + 4×0.06 = 1.5

(d) σ² = (0²×0.11 + 1²×0.52 + 2²×0.19 + 3²×0.12 + 4²×0.06) - µ² = 1.07

σ = √(σ²) ≈ 1.03

4 0
3 years ago
If a ladder is 5.5 m long and it is placed 3 m from the wall, solve and show the work when you use the Pythagorean Theorem to fi
natali 33 [55]

Answer:

4.609 meters

Step-by-step explanation:

The hypotenuse is the ladder because it is the slanted side. 3m is one of the other side lengths

A^2 + B^2 = C^2

3^2 + B^2 = 5.5^2

9 + B^2 = 30.25

30.25 - 9= B^2

21.25= B^2

4.609=B

4 0
3 years ago
A grid shows the positions of a subway stop and your house. The subway stop is located at (-1, 0) and your house is located at (
mars1129 [50]
4.47 to the nearest unit would be 4
5 0
3 years ago
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