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Romashka [77]
3 years ago
9

Please HELP. She finished these tant in no more than 30

Mathematics
2 answers:
MrMuchimi3 years ago
4 0
Uhhhh what ??? lolll
Citrus2011 [14]3 years ago
3 0

Answer:

what

Step-by-step explanation:

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3/4 x 3 2/5 - 5/5(find the value of each of the following) ​
Triss [41]

The value of the given expression is \frac{-13}{20}.

Solution:

Given expression is \frac{3}{4} \times3\frac{2}{5}-\frac{5}{5}.

Let us first convert mixed fraction into improper fraction.

3\frac{2}{5}=\frac{(3\times5)+2}{5}=\frac{17}{5}

Substitute this in the given expression.

\frac{3}{4} \times3\frac{2}{5}-\frac{5}{5}=\frac{3}{4} \times\frac{7}{15}-\frac{5}{5}

                  =\frac{21}{60}-\frac{5}{5}

To simplify the above expression, 21 and 60 are cancelled by 3.

                 =\frac{7}{20}-\frac{1}{1}

Do cross multiplication to make the denominator same.

                 =\frac{7}{20}-\frac{20}{20}

                 =\frac{7-20}{20}

                 =\frac{-13}{20}

The value of the given expression is \frac{-13}{20}.

7 0
3 years ago
If you flipped two coins simultaneously, for a total of 24 times, how many times, on average, would you expect to get a head and
Bingel [31]

When two coins are flipped simultaneously 24 times, on average 12 times we will get a head and a tail.

For given question,

When two coins are tossed simultaneously, the sample space is as follows:

S = { HH, HT, TH, TT} where H denotes Head and T denotes tail.

Using the formula of probability,

P = Number of favorable outcomes/total number of outcomes,

we get,

P(HT) = 1/4

and

P(TH) = 1/4

We know that the occurrence of two mutually exclusive events is the sum of their individual probabilities.

So, P(Head on one and Tail on other)

= P(HT) + P(TH)

= 1/4 + 1/4

= 2/4

= 1/2

= 0.5

So, when two coins flipped simultaneously, the probability of flipping 2 coins and getting a head and a tail is 0.5

In this question, we need to find the number of times getting a head and a tail when two coins are flipped simultaneously 24 times

= 0.5 × 24

= 12

Therefore, When two coins are flipped simultaneously 24 times, on average 12 times we will get a head and a tail.

Learn more about the probability here:

brainly.com/question/3679442

#SPJ4

8 0
1 year ago
which of the following side lengths can form a triangle. A.10,16,&30 B.11,14,&26. C.41,51,&61. D.100,200,&600.
bulgar [2K]
C is the correct answer. :)
3 0
3 years ago
Jane has rolled a fair die 7 times and each time has gotten a 3. She says that the probability that she will get a 3 on the next
Alexandra [31]

Answer:

A.No, the probability of getting a 3 on a fair die does not change. It will always be

Step-by-step explanation:

Get a good grade!

8 0
3 years ago
What is 2 3/5 times 1 4/7
bekas [8.4K]
Turn both mixed fractions into improper fractions

2 3/5 = 13/5
1 4/7 = 11/7

now multiply the improper fractions

13/5 x 11/7

143/35 or 4 3/35
8 0
3 years ago
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