3 years ago

Solve using quadratic equations

Mathematics

1 answer:

Volgvan3 years ago

8 0

Answer:

x= -1. x= -5/2. use an app eather photomath or brainly

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What is the value of x?

Kazeer [188]

Answer:

Step-by-step explanation:

The volume of a sphere is

$V=\frac{4}{3}\pi r^3$

We are told our volume is 500pi/3, so we fill that in and solve for r:

$\frac{500\pi}{3}=\frac{4}{3}\pi r^3$

Start by multiplying both sides by 3 over 4 pi:

$(\frac{3}{4\pi})\frac{500\pi}{3}=(\frac{3}{4\pi})\frac{4\pi}{3}r^3$

Simplifying gives us

$125=r^3$

Take the cubed root of both sides to get that

r = 5

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2 years ago

Mr . Bernstein teaches 100studens. of his 100studwnts ,21wear glasses . what percent of me Bernstein 's students wear glasses

atroni [7]

Answer:

21% of his students wear glasses

Step-by-step explanation:

The answer is 21% because 21/100 =21

Hope it helps.

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2 years ago

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What is the value of x in the equation 2x+3y=36 when y is 6

Andrew [12]

2x + 3*6 = 36

2x = 36-18

2x = 18

x = 9

4 0

2 years ago

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8. What is m<1 77 1 56 A 103° | C 133° C ° D 124° B 47°

saveliy_v [14]

Answer:

Option C

Step-by-step explanation:

Exteriore angle property: Exterior angle equals the sum of opposite interior angles.

∠I = 77° + 56°

= 133°

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2 years ago

Water has a specific heat of 4.184 J/g°C and requires 23,000 J of heat to raise the

nasty-shy [4]

Answer:

$m=80.840 kg$

Step-by-step explanation:

Given Data,

Q=23000 J

c=4.184 J/g °c

Δt= 68 °c

m=?

By using this equation,

Q=mcΔt

$23000=m\times 4.184\times 68\\\\m=\frac{23000}{4.184\times68} \\\\\\m=80.840 kg$

3 0

1 year ago