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saw5 [17]
2 years ago
9

Write the equation of a line that is perpendicular to y = -1 and that passes through the point (8,-4)

Mathematics
1 answer:
ella [17]2 years ago
8 0
The answer is 17942920
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Jason spent one third of his allowance going to the movies. He washed the family car and earned $7. What is weekly allowance if
mel-nik [20]

Answer:

6.66666666667

Step-by-step explanation:

so if the 7 dollars factors into allowance I am right his total allowance would be $20 one third of Twenty is 6.66666666667

7 0
3 years ago
Verify the identity:<br><br> cos(a+B)/cos a sin B = cot B -tan a
alexgriva [62]
Cos( A + B ) = cosAcosB - sinAsinB ;
cos( A + B ) / ( cosAsinB ) = ( cosAcosB - sinAsinB ) / ( cosAsinB ) = ( cosAcosB ) / ( cosAsinB ) - ( sinAsinB ) / ( cosAsinB ) = cosB / sinB - sinA / cosA = cotB - tanA ;
5 0
3 years ago
a retangular pool is filled with 18.75 cubic meters of water. If the pool is 5 meters long and 2.5 meters wide, what is the dept
BigorU [14]
The volume of a rectangular prism is given by length x width x height.

Now in the question the volume is given, length is given, and width is given.
7 0
3 years ago
Read 2 more answers
A 1400 kg car moving +13.7 m/s makes an elastic collision with a 3200 kg truck, initially at rest. What is the velocity of the c
Kamila [148]

Answer:

The velocity of the car after the collision is -5.36 m/s

Step-by-step explanation:

An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.

let the following:

m₁ = mass of the car = 1400 kg

m₂ = mass of the truck = 3200 kg

u₁ = velocity of the car before collision = 13.7 m/s

u₂ = velocity of the truck before collision = 0 m/s

v₁ = velocity of the car after collision

v₂ = velocity of the truck after collision

v₁ = [ u₁ * (m₁ - m₂) + u₂ * 2m₂ ]/ (m₁ + m₂)

   =  [ 13.7 * (1400 - 3200) + 0 * 2 * 3200 ]/ (1400 + 3200)

   = - 5.36 m/s

So, <u>the velocity of the car after the collision is -5.36 m/s</u>

7 0
3 years ago
Help please it’s due soon
MArishka [77]

Answer: 60 degrees

Step-by-step explanation: triangles are come to 180 if you add all angles correctly. therefore if you do 180-90-30, you'll get 60.

4 0
2 years ago
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