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Elenna [48]
3 years ago
9

Betty and Adam are playing cards. Betty has won 5 hands and Adam has won 20 hands. What is the ratio of the number of hands Bett

y has won to the number of hands Adam has won?
Mathematics
1 answer:
stiv31 [10]3 years ago
8 0
1:4 you would set this up as a fraction 5/20. This gets you 1/4. Which is the same as a 1:4 ratio since ratios are the relativity between numbers
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When three points lie on the same line
anyanavicka [17]
When three points are on the same line it’s collinear,. we’re in the same class LOL
3 0
3 years ago
3. 14m – 35m? - 7m?<br> Greatest common factor
Olegator [25]
The greatest common factor is 7m
6 0
3 years ago
Please help me with this!!<br> Thank u
topjm [15]

Answer:

Step-by-step explanation:

Left

When a square = a linear, always expand the squared expression.

x^2 - 2x + 1 = 3x - 5                Subtract 3x from both sides

x^2 - 2x - 3x + 1 = -5

x^2 - 5x +1 = - 5                      Add 5 to both sides

x^2 - 5x + 1 + 5 = -5 + 5

x^2 - 5x + 6 = 0

This factors

(x - 2)(x - 3)

So one solution is x = 2 and the other is x = 3

Second from the Left

i = sqrt(-1)

i^2 = - 1

i^4 = (i^2)(i^2)

i^4 = - 1 * -1

i^4 = 1

16(i^4) - 8(i^2) + 4

16(1) - 8(-1) + 4

16 + 8 + 4

28

Second from the Right

This one is rather long. I'll get you the equations, you can solve for a and b. Maybe not as long as I think.

12 = 8a + b

<u>17 = 12a + b         Subtract</u>

-5 = - 4a

a = - 5/-4 = 1.25

12 = 8*1.25 + b

12 = 10 + b

b = 12 - 10

b = 2

Now they want a + b

a + b = 1.25 + 2 = 3.25

Right

One of the ways to do this is to take out the common factor. You could also expand the square and remove the brackets of (2x - 2). Both will give you the same answer. I think expansion might be easier for you to understand, but the common factor method is shorter.

(2x - 2)^2 = 4x^2 - 8x + 4

4x^2 - 8x + 4 - 2x + 2

4x^2 - 10x + 6    The problem is factoring since neither of the first two equations work.

(2x - 2)(2x - 3)     This is correct.

So the answer is D

5 0
3 years ago
A washer and a dryer cost $745 combined. The washer costs $95 more than the dryer. What is the cost of the dryer?
krok68 [10]

Answer:

let cost of washer be x

cost of dryer be $745-x

we have

cost of washer =$95+($745-x)

x=$95+$745-x

x+x=$840

2x=$840

x=$840/2=$420

the cost of washer =$420

<h2>cost of drier </h2>

=$745-x=$745-420=$325

$325 is the cost of dryer.

7 0
3 years ago
Which measurement is equivalent to 315 cm3?
love history [14]
Hi

1 cm³ = 1 mL
315 cm³ = 315 mL

Answer: a)
3 0
3 years ago
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