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3 years ago

I don’t understand, spent 2 hours on it

Mathematics

1 answer:

Ganezh [65]3 years ago

7 0

A is 45 b is 90 and c if 90

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Explain how you decide wether to multiply or divide by 3 if you need to convert yards to feet.

Valentin [98]

Answer:

Step-by-step explanation:

Converting yards to feet means that we want the label of yards to cancel, leaving feet as our label. Use the factor-label method taught in chemistry.

$???yds *\frac{3feet}{1yd}$

The yards label cancels out, leaving feet as our label. So to answer the question, in order to convert from yards to feet you are multiplying by 3.

6 0

3 years ago

HELP WILL MARK BRAINLIEST Paul wants to paint all four of his basement walls . Each gallon covers 400 sq feet . The dimensions o

solmaris [256]

Answer:

Pual needs 3 gallons

Step-by-step explanation:

∵ The dimensions of the four walls are:

25 × 8 , 30 × 8 , 25 × 8 , 30 × 8

∴ The area of painting = 2(25 × 8) + 2(30 × 8)

= 400 + 480 = 880 square feet

∵ each gallon paint 400 square feet

∴ The number of gallons = 880/400 = 2.2, so he needs 3 gallons

8 0

3 years ago

Find a parametrization of the line in which the planes x + y + z = -6 and y + z = -8 intersect.

rewona [7]

Answer:

L(x,y) = (2,-8,0) + (0,-1,1)*t

Step-by-step explanation:

for the planes

x + y + z = -6 and y + z = -8

the intersection can be found subtracting the equation of the planes

x + y + z - ( y + z ) = -6 - (-8)

x= 2

therefore

x=2

z=z

y= -8 - z

using z as parameter t and the point (2,-8,0) as reference point , then

x= 2

y= -8 - t

z= 0 + t

another way of writing it is

L(x,y) = (2,-8,0) + (0,-1,1)*t

6 0

3 years ago

What is the value of a, b, and c in the quadratic equation -2x^2+4x-3=0

amm1812

A = -2
b = 4
c = -3

They are the coefficients to the terms in the equation<span />

6 0

3 years ago

Read 2 more answers

GIVING BRAINLEIST HURRY PLEASE ‼️‼️‼️‼️

Olenka [21]

Answer:

I would say NO

Step-by-step explanation:

because if you look at those triangles, the one on they have two matching angles and two one side. The other angle in the triangle on the left isn't marked or anything so we can assume and the one on the right has no marked side. I hope I made a little sense. I don't know how to explain but I guess in short you could say that you don't have enough information to determine if they're the same

AGAIN!! I CAN'T PROMISE IF THIS IS RIGHT!!

7 0

3 years ago