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2 years ago

Find the volume of the sphere. Either enter an exact answer in terms of pi or use 3.14 for pi

Mathematics

1 answer:

Ratling [72]2 years ago

6 0

Answer:

volume of sphere= 4/3πr³

4×22×10×10×10

3. 7

88×1000

88000

4190.48

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A jar contains n nickels and d dimes. There is a total of 253 coins in the jar. The value of the coins is $15.95. How many nicke

defon

There are 187 nickels and 66 dimes in the jar.

Step-by-step explanation:

Given,

Total coins = 253

Value of coins = $15.95 = 15.95*100 = 1595 cents

Value of each nickel = 5 cents

Value of each dime = 10 cents

According to given statement;

x+y=253 Eqn 1

5x+10y=1595 Eqn 2

Multiplying Eqn 1 by 5

$5(x+y=253)\\5x+5y=1265\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(5x+10y)-(5x+5y)=1595-1265\\5x+10y-5x-5y=330\\5y=330$

Dividing both sides by 5

$\frac{5y}{5}=\frac{330}{5}\\y=66$

Putting y=66 in Eqn 1

$x+66=253\\x=253-66\\x=187$

There are 187 nickels and 66 dimes in the jar.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

5 0

3 years ago

15/23 - 5/23 lets see who can solve

seraphim [82]

Answer:

10/23

Step-by-step explanation:

15/23 - 5/23 = 10/23(Ans)

7 0

2 years ago

Read 2 more answers

What is the value of x when Log×=-2.7777 And explain it easy

timama [110]

$\log_{10} x = -2.7777\\\\\implies x = 10^{-2.7777}\\\\\implies x = \dfrac{1}{10^{2.7777}}\\\\\implies x = 0.00167$

3 0

2 years ago

I need the answer to these math questions.

Studentka2010 [4]

Answer:

1) 506.85 minutes

2) 17.33 minutes

3) 23.25 hours

Step-by-step explanation:

1) 16 minutes and 21 seconds

$21\ seconds=\frac{21}{60}\\=0.35\ minutes$

16 minutes and 21 seconds=16.35 minutes

Multiply by 31

$\therefore 16.35\times 31=506.85\ minutes$

2) 537 minutes 20 seconds

$20\ seconds=\frac{20}{60}\\=0.33\ minutes$

537 minutes 20 seconds=537.33 minutes

Divide by 31

$\therefore 537.33\div 31=17.33\ minutes$

3) 999 hours 45 minutes

$45\ minutes=\frac{45}{60}\\=0.75\ hours$

999 hours 45 minutes=999.75 hours

$\therefore 999.75\div 43=23.25\ hours$

8 0

3 years ago

Compute the value of each expression 7−17

serg [7]

Answer: -10

Step-by-step explanation:

7 - 17 = -10. An easy way to do this (with only two terms) is to just flip it, and do 17 - 7 = 10, then make 10 negative(-10)

Hope it helps <3

4 0

2 years ago