MATHEMATICS COLLEGE

Math Is TU parallel to VW explain

Answers

Answer 1

Answer:

Answer: C ( yes, both lines have a slope of 2/3. )

Step-by-step explanation:

Answer 2

Answer:

Answer: C

Step-by-step explanation:

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PLSSSSSSSSSSSSSSSSSSSSSSSSSSSSS HELP MEAsh cannot decide which of two washing machines to buy. The selling price of each is $360. The first is marked down by 30%. The second is marked down by 10% with an additional 20% off. Find the sale price of each washing machine. Use pencil and paper. Explain why ash should buy the first washing machine rather than the second if the machines are the same except for the selling price.

Answers

Answer:

The answer is the first one.

Step-by-step explanation:

Okay, so the first one is solved like this:

You do 360*30%. 30% is 0.3 in decimal form. So 360*0.3=108. 108 is the amount that is discounted, NOT the price. You have to do 360-108, which is 252. The discounted price is $252.

Now the second one is solved like this:

You do 360*10% FIRST because the problem says it was marked 10% BEFORE the 20%. 10%=0.1, so 360*0.1=36. You subtract 360-36, which is 324. Then, you multiply 324 by 20% or 0.2, to get 64.8, which is the discount of 20%. You subtract 324-64.8, which is $259.20. So the first one is the answer because it is cheaper since 252 is less than 259.20. If you need this explanation, don't use this word for word. Summarize this in YOUR own words!

He should by the first washing machine because it cost less than the second washing machine.

Multiply (4x-3w)(5x-7w)

Answers

Answer:

20x² - 43xw + 21w²

Step-by-step explanation:

We use FOIL to expand the expression:

F - First

4x(5x) = 20x²

O - Outside

4x(-7w) = -28xw

I - Inside

-3w(5x) = -15xw

L - Last

-3w(-7w) = 21w²

20x² - 28xw - 15xw + 21w²

Combine like terms and add up using correct signs and you should get your answer.

Answer:

$20 {x}^(2) - 43xw + 21 {w}^(2)$

solution,

$(4x - 3w)(5x - 7w) \n = 4x(5x - 7w) - 3w(5x - 7w) \n = 20 {x}^(2) - 28xw - 15xw + 21 {w}^(2) \n = 20 {x}^(2) - 43xw + 21 {w}^(2)$

Hopethishelps...

Goodluck on your assignment..

MZTRI = 3x - 5, mZIRB = x + 27,
and mZTRB = 86. Find the mZTRI.

Answers

Answer:

m∠TRI = 43

Step-by-step explanation:

m∠TRI + m∠IRB = m∠TRB

3x - 5 + x + 27 = 86

3x + x - 5 + 27 = 86 {Combine like terms}

4x + 22 = 86 {Subtract 22 from both sides}

4x = 86 - 22

4x = 64 {Divide both sides by 4}

x = 64/4

x = 16

m∠TRI = 3x - 5

= 3*16 - 5

= 48 - 5

= 43

Find the square root of 8-2√5

Answers

Answer:

The square root of 8 - 2√5 is

$\sqrt{4 + √(11) } \: - \sqrt{4 - √(11) }$

Step-by-step explanation:

To find the square root

8-2√5 must be in the form √a - √b where a > b

√ 8 - 2√5 = √a - √b

Square both sides

8 - 2√5 = (√a - √b)²

That's

8 - 2√5 = (a + b) - 2√ab

Since the two surd expressions are equal we can equate them

That's

8 = a + b ........ 1

a = 8 - b ........ 2

2√5 = 2√ab

Simplify

Divide both sides by 2

√5 = √ab

square both sides

We have

5 = ab ....... 3

Substitute a = 8 - b into equation 3

5 = ( 8 - b)b

5 = 8b - b²

b² - 8b + 5 = 0

After solving

b = 4 + √ 11 or 4 - √ 1

Since b is less than a

b = 4 - √11

a = 4 + √11

So the square root of 8 - 2√5 is

$\sqrt{4 + √(11) } \: - \sqrt{4 - √(11) }$

Hope this helps you.

Answer:

1.88

Step-by-step explanation:

8-2√5=3.527864045

square root of 3.527864045=1.87826090972

the question will probably want it to 2d.p (decimal places) which means the answer would be 1.88

Solve for y. y/6 = 3/9 simplify your answer as much as possible

Answers

Answer: y=2

Step-by-step explanation:

y/6 = 3/9 multiply both sides by 6/1 (since 6/1 times y/6 equals 1y or just y)

y = 18/9 now that y is isolated, just simplify 18/9

y=2 18 divided by 9 is 2

An experiment is pulling a ball from an urn that contains 3 blue balls and 5 red balls. a.) Find the probability of getting a red ball. b.) Find the probability of getting a blue ball. c.) Find the odds for getting a red ball. d.) Find the odds for getting a blue ball.