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3 years ago

Having trouble with ratio and proportional

1 answer:

6 0

A ratio is a comparison of two numbers that can be written in multiple ways such as:

Word: There are ___x for every ___ y
Fraction: y/x
Ordered pair: (x,y)
Ratio:x:y

Proportional is a type of relationship where, oh a graph, a line goes through the 0,0 point and when you divide y/x at any point, you will get the same answer.

Hope this helped!

You might be interested in

Someone help and plz make sure it’s right? :)

mel-nik [20]

Answer:

Right

Step-by-step explanation:

It is right because every angle with 90° degree or with these shapes are called right angled traingle.

if it helps don't forget to like and mark me

6 0

3 years ago

Which correctly represents the inequality 10x+18<-2<br><br> PLSS

77julia77 [94]

Answer:

see below

Step-by-step explanation:

10x+18<-2

Subtract 18 from each side

10x+18-18<-2-18

10x < -20

Divide by 10

10x/10 < -20/10

x < -2

7 0

3 years ago

Can someone help me with this one? It’s very difficult too me

Nostrana [21]

The equation is C = 20t^2 + 135t + 3050

You are told the total number of cars sold is 15000.

Replace c with 15,000 and solve for t:

15000 = 20t^2 + 135t + 3050

Subtract 15000 from both sides:

0 = 20t^2 + 135t - 11950

Use the quadratic formula to solve for t.

In the quadratic formula -b +/-√(b^2-4(ac) / 2a

using the equation, a = 20, b = 135 and c = -11950

The formula becomes -135 +/- √(135^2 - 4(20*-11950) / (2*20)

t = 21.3 and -28.1

T has to be a positive number, so t = 21.3,

Now you are told t = 0 is 1998,

so now add 21.3 years to 1998

1998 + 21.3 = 2019.3

So in the year 2019 the number of cars will be 15000

3 0

4 years ago

Read 2 more answers

Help me pls !! Show with work thankkkk u sooo much !!!!!! :)

postnew [5]

Answer is 12/15 x 5/9 = 4/9

Step by step: first cross cancel to make your numbers to multiply smaller.
I divided 12 and 9 by 3 and 5 and 15 by 5, see attachment.

Then I multiplied across

Answer is 4/9

6 0

1 year ago

When Lara was born,her mass was 3 kilograms.by the time she started third grade, she had gained 24 kilograms.what was Lara’s mas

krok68 [10]

Answer:

27 kilograms

Step-by-step explanation:

When she was born, she weighed 3 kilograms. If she gained 24 kilograms, then that is the initial value (3) plus the added value (24) and you get her weight, which is 27.

3 0

4 years ago