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nalin [4]
3 years ago
6

A model is made of a car. the car is 3 meters long and the model is 3 centimeters long. what is the ratio of the length of the c

ar to the length of the model?
a. 50:1
b. 1 : 50
c. 3:6
d.6:3
Mathematics
1 answer:
Delicious77 [7]3 years ago
4 0
The answer is d. No probs! 
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Help! I don't know how to do this! I will mark Brainliest!
gogolik [260]

Answer:

- 3y² - 7y + 6

Step-by-step explanation:

Given

(- 3y + 2)(y + 3)

Each term in the second factor is multiplied by each term in the first factor, that is

- 3y (y + 3) + 2(y + 3) ← distribute both parenthesis

= - 3y² - 9y + 2y + 6 ← collect like terms

= - 3y² - 7y + 6

4 0
3 years ago
Read 2 more answers
Write an expression that has four terms. your expression should have three different variables and a constant
Katyanochek1 [597]
A term is a number or variable in a math sentence (such as an expression or equation). 

Example:

a + 2b + c + 5

5 is a constant; a,b, c are all variables.
4 0
2 years ago
A motorcyclist leaves City A and rides at a constant speed towards City B, which is 225 km away. After 1.5 hours, the motorcycli
rewona [7]

Answer:

50 km/hr

Step-by-step explanation:

OK, this is how I solved this problem.

Let r = original rate of speed

     t = time after the stop to finish the trip

Time for trip without stopping is 225/r

(1)     1.5 + .5 + t = 225/r      This is a time equation

(2)    1.5r + t(r + 10) = 225     This is a distance equation

(1)       2 + t = 225/r            (2)      1.5r + tr + 10t = 225

         2r + tr = 225

                tr = 225 - 2r                 1.5r + 225 - 2r + 10(225/r - 2) = 225

                t = 225/r - 2

                                                   -.5r + 225 + 2250/r - 20 = 225

                                                     -5r + 2250 + 22500/r - 200 = 2250

                                                     -5r^2 + 2250r + 22500 - 200r = 2250r

                                                       5r^2 + 200r - 22500 = 0

                                                       5(r^ + 40r - 4500) = 0

                                                           5(r - 50)(r + 90) = 0

                                                                 r = 50   or    r = -90

The rate cannot be negative, so the original speed 50 km/hr

This not an easy problem and I hope you were able to follow my work

5 0
3 years ago
Read 2 more answers
A little help on this question? Picture is below. (For 20 points.)
Elena L [17]

Answer:

a) 3 3/5

b) 18/5

c) 3.6

Hope this helps!

3 0
2 years ago
Read 2 more answers
Find the distance between the two points. Round to the nearest tenth, if necessary. (Point 1 is at (-5,2) and point 2 is at (3,-
aivan3 [116]

Answer:

d = 9.4

Step-by-step explanation:

d=\sqrt{(3-(-5))^2 +(-3-2)^2\\

d=\sqrt{(8)^2+(-5)^2}

d=\sqrt{64+25}

d=\sqrt{89

d=9.4

3 0
2 years ago
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