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KatRina [158]
4 years ago
8

Answer plzz....solve n send me plz.​

Mathematics
1 answer:
choli [55]4 years ago
7 0

Answer: \frac{31}{12}

Step-by-step explanation:

We have the following expression:

4-2\frac{2}{3}+1\frac{1}{4}

As we can see, the second and the third term are mixed fractions, which are a combination of an integer and a fraction, and to convert it into an improper fraction and be able to solve the expression more easily, we must do the following:  

Mixed fraction: a\frac{b}{c}

Converting Mixed fraction to improper fraction: \frac{(a)(c)+b}{c}

So, for both mixed fractions we have:

2\frac{2}{3}=\frac{8}{3}

1\frac{1}{4}=\frac{5}{4}

Then the expression is rewritten as:

4-\frac{8}{3}+\frac{5}{4}

Calculating the least common multiple (l.c.m) with the denominators, being the l.c.m=12:

\frac{48-32+15}{12}

Solving:

\frac{31}{12}

Hence:

4-2\frac{2}{3}+1\frac{1}{4}=\frac{31}{12}

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Can anybody help me on this?
Eduardwww [97]

Answer: second option.

Step-by-step explanation:

You need to descompose the radicand 8 and the radicand 50 into their prime factors:

8=2*2*2=2^2*2\\50=2*5*5=2*5^2

Then you can rewrite the expression:

\sqrt{8}+\sqrt{50}

=\sqrt{2^2*2}+\sqrt{2*5^2}

Since:

\sqrt{a^2}=a

You can simplify the expression:

=2\sqrt{2}+5\sqrt{2}

As the indices and the radicands are the same, you can make the addition:

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4 0
3 years ago
The incubation period for the eggs of a House Wren has a normal probability distribution with a mean time of 336 hours and a sta
geniusboy [140]

Answer:

2.28%

Step-by-step explanation:

If X is the random variable that measures the time of incubation needed before hatching, we want

P(X>343)

This is the area under the normal curve whose mean is 336 hours and its standard deviation 3.5 hours to the right of the point 343. (See picture attached)

This can be done easily with the help of a computer and we find

P(X>343) = 0.0228 or 2.28%

6 0
3 years ago
3/5 + -7/5<br>Answer fast please​
Alisiya [41]

Answer:

-0.8

Step-by-step explanation:

hope this helps :3

6 0
3 years ago
Read 2 more answers
Harper has $15 to spend at the grocery store. She is going to buy bags of fruit that cost $4.75 and one box of crackers that coa
kolezko [41]
Box of crackers-1    15.00-3.50= 11.50

bags of fruit- 2         4.75*2= 9.50

Remainder- $2.00

6 0
3 years ago
Ratio of 12 seconds to 1 hour​
kodGreya [7K]

12:3600

1:300

I edited it lol

hope that helps

6 0
3 years ago
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