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4 years ago

(15 points) Please help! 2 pre-algebra questions! Will mark brainliest

Mathematics

1 answer:

miskamm [114]4 years ago

3 0

Answer:

Step-by-step explanation:

1. slope=-3/2-3 is at the top,2 is at the bottom

y intercept=4-The y intercepts or goes past at 4,

equation=y=-3/2+4-We put it all together and we get y=-3/2+4!

2. slope=-3/2-It starts at 3 again,and ends at two again.

y intercept=0-The y touches the line at 0,or the middle

equation=y=-3/2-y equals the slope and we subtract y.

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What is the fraction 7/12 as a product of a whole number and a unit fraction

ivann1987 [24]

Answer:

7 1/2 is the answer because you have to multiply the whole by the denominator. Make that product the numerator.

Step-by-step explanation:

6 0

3 years ago

Which of the following sets is NOT closed under addition.

Veronika [31]

Answer:

Step-by-step explanation:

The odd numbers.

Suppose you have 31 and 27 when you add these two together, you get 58 which is not an odd number.

If you need a more mathematical proof, you could do it this way.

2x+1

2x is even. Anything multiplied by 2 is even. When you add 1 you get an odd number

So continue on

2y + 1 is the other number.

2x + 1 + 2y + 1 = 2(x + y) + 2

2 (x + y ) is even. When you add 2 to it, nothing changes. The result is still even.

7 0

3 years ago

the greatest of three consecutive whole numbers, the smallest of which is m. what's the algebraic expression?

stealth61 [152]

You have 3 consecutive whole numbers.

The smallest one is 'm' .

The next one must be 'm + 1' .

And third one must be 'm + 2' .

3 0

3 years ago

Stephanie sold half of her comic books and then bought fifteen more. She now has 25. How many comics did she have originally?

k0ka [10]

Answer: 5

Step-by-step explanation:

25-15= 10

half of 10 is 5

so she originally had 5

6 0

4 years ago

Quadrilateral RPQS is a rectangle. Label the missing measures.

Taya2010 [7]

Answer:

Part 1) $PR=9\ units$

Part 2) $PQ=12\ units$

Part 3) $PS=15\ units$

part 4) $QR=15\ units$

Part 5) $RT=7.5\ units$

Step-by-step explanation:

we know that

In a rectangle opposite sides are parallel and congruent

The measure of each interior angle is 90 degrees

The diagonals are congruent and bisect each other

step 1

Find the length of side PR

we know that

$PR=QS$ ----> by opposite sides

we have

$QS=9\ units$

therefore

$PR=9\ units$

step 2

Find the length of side PQ

we know that

$PQ=RS$ ----> by opposite sides

we have

$RS=12\ units$

therefore

$PQ=12\ units$

step 3

Find the length of diagonal PS

we know that

$PS=2PT$ ---> the diagonals bisect each other

we have

$PT=7.5\ units$ ---> given problem

therefore

$PS=2(7.5)=15\ units$

step 4

Find the length of diagonal QR

we know that

$QR=PS$ ---> the diagonals are congruent

we have

$PS=15\ units$

therefore

$QR=15\ units$

step 5

Find the length of RT

we know that

$QR=2RT$ ---> the diagonals bisect each other

we have

$QR=15\ units$

substitute

$15=2RT\\RT=7.5\ units$

7 0

3 years ago