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Pachacha [2.7K]
3 years ago
9

Find the surface area of the sphere.

Mathematics
1 answer:
Radda [10]3 years ago
6 0

Answer:

R is 4*Pi*R2

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Graph y = 2x - 5 using the
borishaifa [10]

O The line increases from the left to right

O The line crosses the x-axis at 2.5

O The line does not enter quadrant II at all...

...Are your answers

7 0
3 years ago
Solve and list/explain steps, please <br> 2y³ - 9y = -3y²<br><br> College Intermediate Algebra
ss7ja [257]
2y^3 – 2y – 10y + 10 + y^2 – 1 < 0 [the terms are simply reorganized again]
factor 2y from the first two terms, -10 from the second two terms
2y (y^2 -1) – 10 (y-1) + y^2 – 1 < 0
2y (y+1)(y–1) – 10 (y-1) + (y+1)(y–1) < 0 [ because y^2 – 1 = (y+1)(y–1) ]
factor out (y-1) from all the terms
(y-1) [2y(y+1)-10+ y+1] < 0
(y-1) [(y+1) (2y+1) - 10] < 0
Let us simplify (y+1) (2y+1) - 10 < 0 now
(y-1) (2y^2+y+2y+1-10) < 0
(y-1) (2y^2 +3y -9 < 0
(y-1) (2y^2 +6y -3y - 9) < 0 [ because 3y = 6y -3y] j
3 0
3 years ago
CERTAIN ANSWERS ONLY!!! Please assist me, I will award you brain crown. thank you so much in advance :)
Andrei [34K]

Answer:

See below.

Step-by-step explanation:

  Statements:                                         Reasons:

1) \overline{AB}\cong\overline{CD}; \overline{CE}\cong\overline{AE}                           Given

2) AB=CD;CE=AE                          Definition of Congruence

3) AE+EB=AB;CE+ED=CD      Segment Addition Postulate

4) CE+EB=CD                                   Substitution Property

5) CE+ED=CE+EB                        Transitive Property

6) ED=EB                                           Subtraction Property (of Equality)

7) \overline{ED}\cong\overline{EB}                                          Definition of Congruence

5 0
3 years ago
Mr Jones has 20,000 to invest. He invests part at 6% and part at 7%, if hr earns 1,280 in interest after 1 year, how much did he
MariettaO [177]


Let x be the amount he invests at 6%

1280 = 0.06x + 0.07(20000 - x)
1280 = 0.06x + 1400 - 0.07x
1280 - 1400 = -0.01x
-120 / -0.01 = x
x = 12000

Therefore, he invests $12,000 at 6% and $8,000 at 7%

6 0
3 years ago
Jill and Erika made 5 gallons of lemonade for their lemonade stand. How many quarts did they make? If they charge $2.50 per quar
yawa3891 [41]

a. How many quarts did they make is 25 quarts of lemonade

b. How much money will they make if they sell it all is $62.50

a. Calculation to determine How many quarts did they make.

Given: 1 gallon =5 quarts

Hence:

5 gallons of lemonade=5×5 quarts of lemonade

5 gallons of lemonade=25 quarts of lemonade

b. Calculation to determine how much money will they make if they sell it all

Given: 1 quarts=$2.50

Hence:

25 quarts=25 ×$2.50

25 quarts=$62.50

Inconclusion:

a. How many quarts did they make is 25 quarts of lemonade

b. How much money will they make if they sell it all is $62.50

Learn more here:

brainly.com/question/13442515

5 0
3 years ago
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