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2 years ago

When should I cross multiply fractions and when don’t I cross multiply?

Mathematics

2 answers:

WINSTONCH [101]2 years ago

7 0

You can cross multiply fractions only if there is an "=" sign in the middle of the two fractions.

kotykmax [81]2 years ago

6 0

you should cross multiply because when your figuring if two or more terms (I think) are porportional and when your not cross multipling is when it is an easy question or finding an easier way to do it

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Which expressions is equivalent to 4(x+1)-2(x-2)

Y_Kistochka [10]

(4x+4)-(2x-4) would be an equivalent expression.

8 0

2 years ago

Read 2 more answers

PLEASE HELP ASAP.

alexandr1967 [171]

Answer:

$Y' = (-2, 4\frac{2}{3})$

Step-by-step explanation:

Given

$Y = (-3,7)$

$Scale\ Factor = (\frac{2}{3}x,\frac{2}{3}y)$

Required

Determine Y'

Y' can be solved by multiplying the scale factor by Y

i.e.

$Y' = Scale\ Factor * Y$

For, the x coordinates.

$Y' = \frac{2}{3}x$

Where

$x = -3$

$Y' = \frac{2}{3} * -3$

$Y' = \frac{-6}{3}$

$Y = -2$

For the y coordinates:

$Y' = \frac{2}{3}y$

Where

$y = 7$

$Y' = \frac{2}{3} * 7$

$Y' = \frac{14}{3}$

$Y' = 4\frac{2}{3}$

Hence:

$Y' = (-2, 4\frac{2}{3})$

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2 years ago

Which term describes an angle that measures 100?

Katyanochek1 [597]

100 degrees would be obtuse

8 0

2 years ago

Hese are the values in Paul’s data set.

andrew-mc [135]

Answer: See description below.

The residuals are the differences between the predicted values and the actual values. You will need to make a scatter plot of each difference.

Here are the five points that you will need to plot:
20 - 21 = -1 (1, -1)
17 - 16 = 1 (2, 1)
9 - 10 = -1 (4, -1)
6 - 5 = 1 (5, 1)
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2 years ago

Read 2 more answers

HELPPPPPPPPPP

mrs_skeptik [129]

Answer:

5 1/3 gallons

Step-by-step explanation:

Equation: 8 1/6 - 2 5/6

8-2=6

1/6-5/6= -4/6

6-4/6=5 2/6

Simplify:

5 1/3 gallons

7 0

2 years ago