why does cross multiplication work / why cross multiplication works

need asap! thank you :)

Answers

Answer 1

Cross multiply only when you need to determine if one fraction is greater than another, or if you are trying to find a missing numerator or denominator in equivalent fractions.

Answer 2
the slope is three and parallel lines have equal slopes

Related Questions

QUESTION 2
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What is the length of segment BC? (4 points)
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5-
rades
4
3
2-
С
1-
-4
0
0
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2
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04
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7

Answers

5 would be the correct answer

A high-definition TV costs $500. If a 6.5% sales tax is added, what is the total cost?

Answers

Answer:

532.5

Step-by-step explanation:

I really hope this answer helps you!!

$500 dollars plus 6.5% tax total costs $532.5

find the value of each variables in the parallelogram

Answers

Answer:

A = 28

B = 87

Step-by-step explanation:

18 + 10 = 28

103 -16 = 87


Water goes over a waterfall at a rate of 162 1/2 gallons every 15 minutes. Which would not be a proportional you could use to solve for the gallons of water going over the waterfall in 2 2/3 hours? *more then one answer*

Answers

Answer:

look below

Step-by-step explanation

First, we need to convert 2 2/3 hours to minutes. This would be:

= 2 2/3 × 60 minutes

= 8/3 × 60 minutes

= 160 minutes

Since water goes over a waterfall at a rate of 162 1/2 gallons every 15 minutes. The the gallons of water going over the waterfall in 2 2/3 hours would be:

= (162 1/2 × 2 2/3hours) / 15 minutes

= (162 1/2 × 160) / 15

= 1733 1/3 gallon

50% to 36.75 what is the original price

Answers

Answer: 73.50

Step-by-step explanation:

I am assuming that the new price is 36.75

50% is 1/2

36.75·2=original price

original price=73.50

look at image.........

Answers

Answer:

47

Step-by-step explanation:

angle tsq and angle wvs are corresponding angles meaning that they are the same angle.

Answer:

47°

Step-by-step explanation:

TSQ and WVS are the same size

Which pair of numbers is relatively prime?
OA) 5 and 75
OB) 12 and 51
O C) 7 and 20
OD) 15 and 21

Answers

the answer is c. 7 and 10. this is because they share no factors other than 1.

which equation represents the inverse of f(x)=(x+3)^2+5 for x ≤-3

Answers

Answer:

f(x)=(x+3)^2+5

let f(x)=y

y=(x+3)^2+5

interchanging role of x and y

x=(y+3)²+5

x-5=(y+3)²

√(x-3)-3=y

y=√(x-3)-3

:.inverse of f(x)=(x+3)^2+5 is f-¹(x)=√(x-3)-3

___ + 142 + 308 = 450

Answers

Answer:

it would be 0 cause 142 and 308 already equal 450

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

450 - (142 + 308) = 0. ) is the answer.

Hope it helps!

Alexa has a cylindrical recycling can with a diameter of 20 cm and a height of
30 cm. What is the approximate volume of the can?

Answers

i believe it’s 600 because you have to multiply

Answer:

I think its 600 bc u multiply 20 by 30 cms to get the volume.

Step-by-step explanation:

PLEASE HELP ME FAST ANSWERS ONLY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

1. $15

2. $450

3. $20

Brainly plz :))

In AABC, if m ZA = 25° and mZB = 108°, what is mZC?

Answers

Answer:

Step-by-step explanation:

Sum of all the angles of a triangle = 180°

∠A +  ∠B + ∠C = 180

25 + 108 + ∠C = 180

        133 + ∠C = 180

                 ∠C = 180 - 133

                ∠C = 47°

solving equation with integers add/sub​

Answers

The answer is -5
X+7=2
X=2-7
X=-5

Which equation is equivalent to -6 - x) = 24?

A. -6 + x = 24
B. -6 + x = -24
C. -6- x = 24
D. -6- x = -24

Answers

.........The answer is C

Answer:

i beleive it is d

Step-by-step explanation:

i dont know if this is completly correct sorry

What is the y-intercept of y=4x-7 & 7x+2y=18

Answers

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

what is the arc length?

Answers

Answer:

approximately 21, when rounded to nearest tenth.

Step-by-step explanation:

First, let's find the measure of angle BAD. Angles BAD and DAC add up to 180 degrees, so 180-57= 123 degrees. Now, let's find the circumference of the circle. The circumference is diameter * π, which is 19.6(π). Then, the ratio is 123/360, so multiply 19.6(π) by 123/360, and you get 21.0381988...... which simplifies to 21 (rounded to nearest tenth)

Step by step explanation please so I can see how to do it

Answers

Answer:

875 units

Step-by-step explanation:

35/5=7 AD and BC =7

25/5=5 the ratio of the to rect are 5

7(5)=35 EH and FG =35

25(35)=875

can you mark me the brainliest please

find the value of X:

Answers

this answer is wrong

Answer:

7

Step-by-step explanation:

the left side is 9+18=27

so the right side is 20+x=27

and 27-20=7

Todd and Joan each generate a random sample of the 250 students in Grade 7 at their school. Each sample has 20 students. Todd and Joan write the numbers 1 through 250 on small pieces of paper and put them in different jars.​ Then, they draw numbers randomly. Describe two things you notice about the two random samples taken from the same population.

Answers

Answer:

B. There is a slightly more even distribution in the numbers in​ Joan's Group than in​ Todd's Group. C. Only one​ number, 28, is the same between the two samples.

Step-by-step explanation:Your welcome loves :)

1/8 + -3/16 how do you solve this?

Answers

Answer:

-1/16

Step-by-step explanation:

Answer: 1/8 + -3/16 = -1/16

Step-by-step explanation:

First, multiply the numerator and denominator of 1/8 by 2.

1/8 + -3/16

1 x 2 = 2

8 x 2 = 16

2/16 + -3/16

Next, turn the + and - into one -.

2/16 + -3/16

2/16 - 3/16

Finally, solve 2/16 - 3/16! We will get a negative number.

2/16 - 3/16 = -1/16

1/8 + -3/16 = -1/16

Solve: -3+ h = 40

HELPPP

Answers

Answer:

answer: c, 43

Step-by-step explanation:

-3+h=40

+3        +3    add 3 to both sides

h=43

Answer:

Its c

Step-by-step explanation:-3 + h = 40 cause 43 -3 is 40

A dot plot titled Number of classes going from 3 to 7. 3 has 5 dots, 4 has 6 dots, 5 has 5 dots, 6 has 4 dots, 7 has 3 dots.

The dot plot shows the number of classes taken by the students at South High School.

The shape of the data is
Skewed left.
Skewed right.
Symmetrical.
From 3 to 7.
Answer is B





feel free to take the points

Answers

Answer:

Skewed right. btw thx have a nice day!!!!!!!!!!!!!!!

Step-by-step explanation:

Answer:

the person above me is correct

it is Skewed right.

Step-by-step explanation:

I need help solving −4−8v=−2(4v+2)

Answers

If ur simplifying it? Then zero

Answer: Hey, there

0 is the answer

Step-by-step explanation:

−4−8v=−2(4v+2)

Step 1: Simplify both sides of the equation.

−4−8v=−2(4v+2)

−4+−8v=(−2)(4v)+(−2)(2)(Distribute)

−4+−8v=−8v+−4

−8v−4=−8v−4

Step 2: Add 8v to both sides.

−8v−4+8v=−8v−4+8v

−4=−4

Step 3: Add 4 to both sides.

−4+4=−4+4

0=0

McDonalds sells a 20-piece chicken nugget for $5.20. What is the cost per nugget?

Answers

Answer:

O.26

Step-by-step explanation:

Divide The cost from the pieces

Answer:

26 cents a nugget

Step-by-step explanation:

I just did 5.20 divided by 20.

The table shows information about all students doing GCSE's at a school.

Year 10 Year 11 Total
Girls: 90 60 150
Boys: 60 80 140
Total: 150 140 290

What fraction of the boys are Year 11?
Give your answer in its simplest form

Answers

Answer:

[tex] \frac{1}{2} [/tex]

Step-by-step explanation:

[tex] \frac{130}{260} = \frac{1}{2} [/tex]

The fraction of the boys of Year 11 is 1/2.

What is a fraction?

Fractions are used to represent smaller pieces (or parts) of a whole.

Given that, there are total 260 students of 11 years in which 130 are girls and 130 are boys.

The fraction of boys of 11 years = 130/260 = 1/2

Therefore, half of the strength of students are boys.

Hence, The fraction of the boys of Year 11 is 1/2.

For more references on fractions, click;

https://brainly.com/question/10354322

#SPJ2

Someone please help me! I need help with these 6 questions please!!

Answers

Use photo math! It helps a lot with these problems. You can download it on the App Store: Photomath
Jskslajdjdksksjdjdjfjfjkfksjs

Bob purchased n notebooks, They were 4 dollars each. Write an equation to represent the total cost c that Bob paid.

Answers

Answer:

C = total cost = (number of notebooks purchased)(price of one notebook)

 

C(n) = (n)($5) = ($5)n

Step-by-step explanation:

Find the slope and the y intercept of the chart

Answers

[tex]\frac{y_{2} - y_{1}}{x_{2} - x_{1}}[/tex]

[tex]\frac{1 - 4}{0 + 1}[/tex]

[tex]\frac{-3}{1}[/tex]

the slope is -3

y intercept is 1

y = -3x + 1

hope this helped :))

Petrov ran 7 miles around a track. Each lap around the track is a distance of 1/4 mile. What is the total distance Petrov ran in feet?

Answers

Answer:

vhjcxvhvhjvjdbkds

Step-by-step explanation:

good day

1/4 mile per lap times 7 laps...

(1/4)(7) = 7/4 = 1 3/4 miles

evaluate 16 3/4
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn

Answers

Answer:

16.75

Step-by-step explanation:

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