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Lady bird [3.3K]
2 years ago
13

Expand the following

Mathematics
2 answers:
harina [27]2 years ago
8 0

Answer:

a) 4x+4

b) 7x-14

c) 12x +18

d) 10x-10y

kenny6666 [7]2 years ago
3 0

Answer:

4x+4

7x-14

12x+18

10x-10y

Step-by-step explanation:

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Without the wind, a plane would fly due east at a rate of 150 mph. The wind is blowing southeast at a rate of 50 mph. The wind i
ch4aika [34]
The actual speed of the plane with the wind:
v² = ( 150 + 50 · cos 45°)² + ( 50 · sin 45°)²
v² = ( 150 + 35.355 )² + 35.355²
v² = 34,356.467 + 1,249.976
v = √35,606.452
v = 188.7 mph
8 0
3 years ago
Nick wanted to determine the length of one blade of a windmill. He stood at a point on the ground 440 feet from the windmill's b
mafiozo [28]

Answer:There are two right triangles. You need to find the opposite side (the height) of each of them. The difference between the two is the height of the blade, x.

You know the adjacent, 440, and you are looking for the opposite, so you need to use tan for both.

tan (30) = y / 440

y = 440 * tan (30) = 254.034...

tan (38.8) = z / 440

y = 440 * tan (38.8) = 353.769.--

353.8 - 254.0 = 99.8 = 100 feet.

Step-by-step explanation:

7 0
2 years ago
What is the square root of 144?
Andrews [41]

Answer:

12, -12

Step-by-step explanation:

sqrt(144)

What number times itself = 144


12*12 = 144

Also -12*-12 = 144


6 0
3 years ago
Read 2 more answers
Hay tres paralelos para el curso de cálculo diferencial y tres paralelos para algebra lineal. Un estudiante desea tomar ambos cu
Lelu [443]

Answer:

mi español no es tan bueno si hay algún error en esto entonces lo siento

cursos en diferencial = a, b, c

cursos de álgebra = p, q, r

conjunto de estudiantes tomando ambos = {(a, p), (a, q), (a, r), (b, p), (b, q), (b, r), (c,p),(c,q),(c,r)}.

Step-by-step explanation:

márcame como el más inteligente

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storchak [24]
What the make no sense but I believe it is 50.24 hope that helps
8 0
3 years ago
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