3 years ago

Factor this trinomial. Your answer should consist of two binomials. y2 - 2y - 15

Mathematics

1 answer:

ioda3 years ago

3 0

Answer:

(y-5)(y+3)

Step-by-step explanation:

im assuming that the y2 meant y^2 :,33

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The girls heights in inches are as follows:62,70,60,63,66,what is their average height?

Gemiola [76]

Answer:

Average height = 64.2 inches

Step-by-step explanation:

$Average = \frac{sum \ of \ the \ values }{number \ of\ value}$

$=\frac{62 + 70 + 60 + 63 + 66}{5}\\\\=\frac{321}{5}\\\\=64.2 \ inches$

4 0

3 years ago

Read 2 more answers

To decorate her bedroom Joslin spent $54.11 on new bedding $51.96 on paint and $67.52 on assessor he’s about how much did she sp

almond37 [142]

54.11 + 51.96+67.52 =173.59

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4 years ago

Marc is half as old as Tony and three times as old as Ben. If the sum of their ages is 40, how old is Marc?

Murljashka [212]

Answer:

Marc's age is 12

Step-by-step explanation:

Let

x ----> Marc's age

y ---> Tony's age

z ---> Ben's age

we know that

the sum of their ages is 40

$x+y+z=40$ -----> equation A

Marc is half as old as Tony

$x=\frac{y}{2}$

$y=2x$ ----> equation B

Marc is three times as old as Ben

$x=3z$

$z=\frac{x}{3}$ ----> equation C

substitute equation B and equation C in equation A

$x+2x+\frac{x}{3}=40$

solve for x

$\frac{10x}{3}=40$

$x=40(3)/10\\x=12\ years$

therefore

Marc's age is 12

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3 years ago

For the sphere shown, r = 4.2 cm.<br> What is its volume, to the nearest cubic centimeter?

DochEvi [55]

V = 4/3(pi)(r^3)
V = 4/3(pi)(4.2^3)
V = 310 cm^3

Good luck!

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3 years ago

Can someone help me solve this please?

svetlana [45]

I THINK THE ANSWER WOULD BE 2A\a+b=h

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3 years ago