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3 years ago

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Mathematics

1 answer:

Artist 52 [7]3 years ago

5 0

Answer:

117 pages

Step-by-step explanation:

114 + 3 = x

x = 117

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What is 3 3/10 + 2 4/5 + 3 2/5 + 2 1/10

marysya [2.9K]

(33/10)+(14/5)+(17/5)+(21/10) (after taking L.C.M. of denominators) =(33+28+34+21)/10 =116/10(simplfy it) =58/5

4 0

4 years ago

Help me ASAP<br>factorise; a=b-bx<br>10 points to whoever answers this

Serhud [2]

Answer:

a=-b(x-1)

Step-by-step explanation:

Is it factored, but that question doesn't have too much helpful in it

6 0

3 years ago

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solve for t. 19 = 1/2 gt^2. ( Look at the picture for answer choices. Please Hurry and will give Brainliest.

anzhelika [568]

Answer:

t= $\sqrt{\frac{38}{g} }$

Step-by-step explanation:

19=(1/2)gt²

(multiply both sides by 2)

38=gt²

(divide both sides by g)

t²=(38/g)

(square root both sides)

t= $\sqrt{\frac{38}{g} }$

7 0

3 years ago

Stu Dent has 7 different math books, 5 different science books and 10 different engineering books. Find the number of ways to pi

zepelin [54]

Answer:

155

Step-by-step explanation:

Number of math books = 7

Number of science books = 5

Number of engineering books = 10

We need to find the number of ways to pick two books with different subjects.

Solution :

We will use combination here .

If we need to choose r objects from total n objects ,

$n_{C_{r}}=\frac{n!}{r!(n-r)!}$

So, number of ways to pick two books of same subjects = $7_{C_{2}}+5_{C_{2}}+10_{C_{2}}=\frac{7!}{2!5!}+\frac{5!}{2!3!}+\frac{10!}{2!8!}\\\\=\frac{7\times 6}{2}+\frac{5\times 4}{2}+\frac{10\times 9}{2}\\\\=21+10+45=76$

Also, number of ways to select any two books = $22_{C_{2}}=\frac{22!}{2!20!}=\frac{22\times 21}{2}=21\times 11=231$

Therefore , number of ways to pick two books with different subjects =

number of ways to select any two books - number of ways to pick two books of same subjects = 231 - 76 = 155

3 0

4 years ago

If DKL APVX, which of the following statements must also be true? Check all that apply.

Mars2501 [29]

Answer:

LCF AND OSC

Step-by-step explanation:

i did this question and got it right:)

6 0

3 years ago

Read 2 more answers