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3 years ago

60 minutes is 20% of ? minute s

Mathematics

2 answers:

rewona [7]3 years ago

4 0

300 minutes is the answer :))))

Hatshy [7]3 years ago

3 0

60 minutes is 20% of 300 minutes

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Given r(x) = x square +2x -1 and s(x) = x-1 what is the value of r(s(3))

Amanda [17]

Answer:

$r(s(3))=7$

Step-by-step explanation:

we have

$r(x)=x^{2} +2x-1$

$s(x)=x-1$

we know that

The function composition is equal to

(r ∘ s )(x) = r(s(x))

In the function r(x) substitute the variable x by the function s(x)

$r(s(x))=(x-1)^{2} +2(x-1)-1$

For x=3

substitute the value of x=3 in the function composition

$r(s(3))=(3-1)^{2} +2(3-1)-1$

$r(s(3))=(2)^{2} +2(2)-1$

$r(s(3))=4+4-1$

$r(s(3))=7$

3 0

3 years ago

Which is a factor of 10x - 20x2 - 2x + 4?

sveta [45]

Add like terms and then simplify

7 0

3 years ago

What is a number that when you divide it by 4 and subtract 3 from the quotient, you get 13?

inysia [295]

$64$

$64 \div 4 = 16$

$16 - 3 = 13$

8 0

2 years ago

Read 2 more answers

The table shows weights for different US coins. Allen has one of each coin in his hand.

kozerog [31]

Round each coin weight to the nearest gram first, penny 3g, nickel 5g, dime 2g, quarter 6g, half dollar 11g. Now add those numbers together as he has one of each coin 3+5+2+6+11=27 grams

6 0

3 years ago

2x+3y=15 x+y=6 find values for x and y

MatroZZZ [7]

Answer:

(x, y) = (3, 3)

Step-by-step explanation:

Subtract double the second equation from the first.

(2x +3y) -2(x +y) = (15) -2(6)

y = 3 . . . . . . . . simplify

Use the second equation to find x.

x = 6 -y = 6 -3 = 3

The values of x and y are both 3.

8 0

2 years ago