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Lapatulllka [165]
3 years ago
10

How to add fractions with different denominators khan academy?

Mathematics
2 answers:
tino4ka555 [31]3 years ago
8 0
You have to find the least common denominator between the two fractions. if you had 1/2 + 1/4 then the lcd is 4 so you multiply both the top and the bottom by 4. you get 2/4+ 1/4. Then you add across the top and get 3/4.
Cerrena [4.2K]3 years ago
7 0

You have to find the LCD with the two fractions. Then you add the numarator an the denominator of the fraction.

<h2><em><u>Hope it helped</u></em></h2>
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Find the volume of a cone with a radius of 8 cm and height 15 cm? Round to the nearest tenth. Please show work.
Nonamiya [84]
You multiply radius by 3.14 by the height  if you plug it in your equation is 8×3.14×15 which equals 1005.31 which rounds to 1005, the answer is 1005! :D
4 0
3 years ago
In tossing four fair dice, what is the probability of tossing, at most, one 3
11Alexandr11 [23.1K]

<u>Answer- </u>

In tossing four fair dice, the probability of getting at most one 3 is 0.86.

<u>Solution-</u>

The probability of getting at most one 3 is, either getting zero 3 or only one 3.

P(A) =The \ probability \ of \ getting \ zero \ 3 =(\frac{5}{6})(\frac{5}{6})(\frac{5}{6})(\frac{5}{6})=\frac{625}{1296} =0.48                    ( ∵ xxxx )

P(B) = The \ probability \ of \ getting \ only \ one \ 3 =(4)(\frac{1}{6})(\frac{5}{6})(\frac{5}{6})(\frac{5}{6}) = 0.38                    ( ∵ 3xxx, x3xx, xx3x, xxx3 )

P(Atmost one 3) = P(A) + P(B) = 0.48 + 0.38 = 0.86

7 0
3 years ago
It cost Hudson $28.20 to send 188 text messages. How much would it cost to send 63 text messages? Good luck!
frosja888 [35]

Answer:

$9.45

Step-by-step explanation:

1.  First, you want to figure out how much one text message costs.  To do this, divide the dollar amount (28.20) by the number of text messages (188).  You get 0.15, or $0.15 per text message.

2. Using this $0.15 per text message, you can calculate how much 63 text messages costs.  You simply multiply $0.15 by 63 to get $9.45, which is your answer.

Hope this helps! :)

3 0
3 years ago
39.4 is what percent of 64 round to the nearest 100
Valentin [98]

Answer:61.7

Step-by-step explanation:

maths

4 0
2 years ago
HELP!! URGENT!! GIVING AWAY 50 POINTS to correct answer!!
NNADVOKAT [17]

The figure seems like its a parallelogram.

In a parallelogram :
Opposite sides are equal and
Opposite angles are equal
Hence, The side opposite to 9in. is equal to 9in. and the side opposite to 10in. is equal to 10in.

Area of the figure =b×h
= 8×10
=80in.sq.

7 0
3 years ago
Read 2 more answers
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