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Nikitich [7]
3 years ago
7

Select two answer choioces

Mathematics
1 answer:
dexar [7]3 years ago
6 0

Answer:

C or 3rd option

Step-by-step explanation:

1/3 - 2/5

15/15 - 6/15

9/15

B is not correct

2/5 - 1/3

this will be a negative answer

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Rani has 160 DVDs 35 % of her DVDs are thrillers . 2/5 of her DVDs are comedies . The rest of her DVDs are science fiction . How
Tamiku [17]

Answer: 40

Step-by-step explanation:

Number of DVDs = 160

Thrillers = 35%

Comedies = 2/5 = 40%

Science fiction = 100 - (35 + 40) = 100 - 75 = 25%

The number of science fiction DVDs that Rani has will be:

= 25% × 160

= 25/100 × 160

= 40

5 0
3 years ago
There are 72 boys and 90 girls on the math team.For the next math competition, Mr.Johnson would like to arrange all of the stude
Dmitrij [34]
Answer is 18 If you know your division you just divide then you will see that you find something common that answer would be 18 also to get this answer i used GCF
 First what i did was find out what the factors of 72 then i look at the factors of 90

8 0
3 years ago
Read 2 more answers
Write the polynomials in standard form:<br><br> (15–7xy^2)–(y^3–y^2x–15)
stepan [7]
<h3>Answer:</h3>

-y³ -6y²x +30

<h3>Step-by-step explanation:</h3>

When parentheses are eliminated and the y variable placed first in each term, the expression simplifies to ...

... 15 -7y²x -y³ +y²x +15

Arranging like terms together, we have ...

... -y³ +y²x(-7 +1) +(15 +15)

... -y³ -6y²x +30

_____

The two different 3rd-degree terms can be expressed in either order. I have chosen to list the term with the largest exponent first. The expression could also be written with the same-degree terms in "lexicographical order", meaning the expression would be written ...

... -6xy² -y³ +30

7 0
3 years ago
Mrs. Nevin is making a costume for a school play. She needs a piece of fabric that is greater than 1/2 of a yard but less than 5
Bumek [7]

Answer:

4/7 yards

Step-by-step explanation:

Given that :

Required fabric is > 1/2 but < 5/8

Let required fabric = x

Then ;

Converting the fractions to decimal :

1/2 = 0.5 ; 5/8 = 0.625

0.5 < x < 0.625

3/8 yards = 0.375 ;

4/7 yards = 0.571

3/7 yards = 0.429

2/4 yards = 0.5

0.5 < 0.571 < 0.625

From the options, only 4/7 yards satisfies the condition :

5 0
3 years ago
There are 18 women and 20 men in a room. Of the women, 10 are older than 35 years old. Of the men, 9 are older than 35 years old
Vinvika [58]
Answer: 50%

Step 1 add 18+20 = 38

Step 2 add 10+9= 19

Step 3 divide 19 by 38 = 2

So if would be half which is equal to 50%

7 0
3 years ago
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