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4 years ago

Will give brainliest.

Mathematics

2 answers:

earnstyle [38]4 years ago

8 0

Answer:

They added 8 to each side, --8 is +8 so we need to subtract - from each side not add 8 to each side

Step-by-step explanation:

We have a slope and a point

We can use point slope form

y-y1 = m(x-x1)

y--8 = -6(x-2)

y+8 = -6(x-2)

Distribute the -6

y+8 = -6x+12

Subtract 8 from each side

ERROR in the students work

They added 8 to each side, --8 is +8 so we need to subtract - from each side not add 8 to each side

y+8-8 = -6x+12-8

y = -6x+4

erik [133]4 years ago

4 0

Answer:

The student should have simplified the equation to have y + 8 on the left.

Then, the student should have subtracted 8 from both sides of the equation.

The value of b should be 4, not 20.

Step-by-step explanation:

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Find the amount of empty space within a cylinder containing three solid spheres, where each sphere has a radius of 3 cm. (Volume

zimovet [89]

Answer:

Step-by-step explanation:

cylinder's height=3×(diameter of sphere)=3×6=18 cm

radius of cylinder=3 cm

volume of cylinder=π r²h=π(3)²×18=162 π cm³

volume of sphere=4/3 π(3)³=36 π cm³

reqd. empty space=162 π-3×36π=54 πcm³

3 0

4 years ago

If tan0=-3/4 and 0 is in quadrant IV, cos20= (33/25, -17/25, 32/25, 7/25, 24/25?) and tan20= (24/7, -24/7, 7/25, -7/25, 13/7, -1

Oksana_A [137]

Answer:

cos(2θ) = 7/25
tan(2θ) = -24/7

Step-by-step explanation:

Sometimes, it is easiest to let a calculator do the work. (See below)

The magnitude of the tangent is less than 1, so the reference angle will be less than 45°. Then double the angle will be less than 90°, so will remain in the 4th quadrant, where the cosine is positive and the tangent is negative.

You can also use the identities ...

cos(2θ) = (1 -tan(θ)²)/(1 +tan(θ)²)

cos(2θ) = (1 -(-3/4)²)/(1 +(-3/4)²) = ((16-9)/16)/((16+9)/16)

cos(2θ) = 7/25

tan(2θ) = 2tan(θ)/(1 -tan(θ)²) = 2(-3/4)/((16-9/16) = (-6/4)(16/7)

tan(2θ) = -24/7

3 0

3 years ago

What is the value of (6-2) with the exponet 3? write your anewer as a whole number.

frozen [14]

64 6-2=4 then 4 times 4= 16 times 4 equals 64

4 0

3 years ago

Which one of the following are the factors of m2-14m+48

Over [174]

D.(m-6)(m-8) is the answer

7 0

3 years ago

Help me pls i need this

Marina CMI [18]

so the right answer is 28 hours.

Hope this will help u...

Look at the attached picture⤴

8 0

3 years ago