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3 years ago

Steps to solve1/2 / 2/-5 + (-1/4)

Mathematics

2 answers:

NARA [144]3 years ago

7 0

Answer:

-3/2

Step-by-step explanation:

this is a answer first u dived then plus

murzikaleks [220]3 years ago

7 0

Answer:

-3/2

Step-by-step explanation:

(1/2)/(2/-5) +(-1/4) = (1/2)·(-5/2) -(1/4) . . . . invert the denominator and multiply

= -5/4 -1/4 = -6/4 . . . . . . . . . . . . . . . . . .add the two terms

= -3/2 . . . . . reduce the fraction

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Comment on fraction division

There are two ways to divide fractions. In the end, they amount to the same thing.

One: multiply by the inverse of the denominator:

(a/b) / (c/d) = (a/b)·(d/c) = (ad)/(bc)

Two: adjust the denominators to be the same, then use the ratio of numerators:

(a/b) / (c/b) = a/c

Here, we could rewrite the fractions as ...

(5/10) / (-4/10) = -5/4 . . . . using method two

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Find the x- and y-intercepts of the graph of 2x - y = 24. State your answers as

Ghella [55]

(12,-24)
x intercept is 12 & y intercept is -24

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2 years ago

Find the slope of the line(s) passing through the given points. Then tell whether the line(s) rises, falls, is horizontal, or is

bonufazy [111]

Answer:

21) falls

22) vertical

23) rises

24) rises

25) falls

26) horizontal

27) rises

28) horizontal

29) falls

Step-by-step explanation:

We shall use the slope formula $m=\frac{y_2-y_1}{x_2-x_1}$ to calculate the slopes of the line passing through each pair of point.

21: (3,1), (2,6)

The slope is $m=\frac{6-1}{2-3}$

$\implies m=\frac{5}{-1}=-5$ .

A negative slope means this line falls

22) (-2,5), (-2,4)

The slope is $m=\frac{4-5}{-2- -2}=\frac{-1}{0}$ = undefined

An undefined slope means this line is vertical

23) The given point is (0,8) (2,10)

The slope is $m=\frac{10-8}{2-0}=\frac{2}{2}=+1$

A positive slope means this line rises

24) The points are (-3,-3), (3,1)

The slope is $m=\frac{1--3}{3--3}=\frac{4}{6}=+\frac{2}{3}$

A positive slope means this line rises

25) The points are: (5,0) (6,-2)

Slope: $m=\frac{-2-0}{6-5}=\frac{-2}{1}=-2$

A negative slope means this line falls

26) The points are (-2,-8) , (5,-8).

Slope: $m=\frac{-8--8}{5--2}=\frac{0}{7}=0$

A zero slope means this line is horizontal

27) The points are: (-1,2) , (5,3)

Slope: $m=\frac{3-2}{5--1}=+\frac{1}{6}$

A positive slope means this line rises

28) The points are: $(\frac{1}{2},4)$ , (-1,4)

Slope: $m=\frac{4-4}{-1-\frac{1}{2}}=\frac{0}{\frac{1}{2}}=0$

A zero slope means the line is horizontal

29) The points are: $(4,\frac{1}{2}), (5,\frac{1}{4})$

Slope: $m=\frac{\frac{1}{4}-\frac{1}{2}}{5-4}=-\frac{1}{4}$

A negative slope means this line falls.

6 0

3 years ago

Plz someone help me on this too plz plz

san4es73 [151]

1. 7 and -7 are both 7 units away from 0. They are 14 units away from each other. Absolute value helps because rather than 7+(-7) being 0 absolute value makes anything positive so it becomes 7+7=14 to be able to count the units between the two.

2. 5 and -5 are both 5 units away from 0. They are 10 units away from each other. Absolute value helps because rather than 5+(-5) being 0 absolute value makes anything positive so it becomes 5+5=10 to be able to count the units between the two.

3. 2 and -2 are both 2 units away from 0. They are 4 units away from each other. Absolute value helps because rather than 2+(-2) being 0 absolute value makes anything positive so it becomes 2+2=4 to be able to count the units between the two.

Hope that helps

8 0

3 years ago

Abigail's mom asked her to go to the store and purchase 5 kilograms (kg) of potatoes. When she got to the store, she saw the pot

Over [174]

1 kilogram = 2.205 pounds

5 kg * 2.205 lbs = 11.0231 pounds

Round to pounds = 11
Round to tenths/1 decimal = 11
Round to hundredths/2 decimals = 11.02

5 0

3 years ago

Cy+4=d−9y solve for y

tiny-mole [99]

Answer:

Answer:

y= d−4 /c+9

Step-by-step explanation:

cy+4=d−9y

Step 1: Add 9y to both sides.

cy+4+9y=d−9y+9y

cy+9y+4=d

Step 2: Add -4 to both sides.

cy+9y+4+−4=d+−4

cy+9y=d−4

Step 3: Factor out variable y.

y(c+9)=d−4

Step 4: Divide both sides by c+9.

y(c+9) c+9 = d−4 /c+9

y= d−4 /c+9

3 0

3 years ago

Read 2 more answers

Steps to solve1/2 / 2/-5 + (-1/4)​

Steps to solve1/2 / 2/-5 + (-1/4)