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Kay [80]
3 years ago
15

7. The speed of one car is 20% less than the speed of a second car. What per cent more time does the first car need to travel th

e same route as the second car?
Mathematics
1 answer:
9966 [12]3 years ago
7 0

Answer:

25% or more

Step-by-step explanation:

t1 = d1/v1 , t2 = d2/v2.

d1 = d2 , and v1 = 0.8 v2

t1 / t2 = d1/d2 x v2/v1 = v2/v1 ( as d1 = d2 )

t1/t2 = v2 / v1 = v2/0.8 v2 = 1/0.8 = 1.25

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What is the equation of the line that is perpendicular to the line y=*x+10 and passes through the point (15,-5)?
ivanzaharov [21]

Answer:

Slope of the line y = x + 10 is 1. So, any straight line perpendicular to this must be having slope of (-1).

Let, the line be y = - x + b and it passes through (15, -5).

So, 15 = 5 + b

b = 10.

So, equation of that line: y = -x + 10

Or, x + y = 10.

Y-intercept of the line = 10 units.

6 0
2 years ago
Read 2 more answers
What are the LDC between 4/9 & 2/3
SashulF [63]

Answer:

the least common denominator between 4 and 9 is 36

Step-by-step explanation:

6 0
2 years ago
Caroline bought movie tickets for three Children and a bucket of popcorn for $9.50. If she spent a total of $35.75, how much was
meriva

Answer:

$8.08

Step-by-step explanation:

First subtract 9.50 from 35.75 to get

24.25

Then divide 24.25 by 3 to get

Approx $8.08

7 0
3 years ago
Chris is painting a wall with a length of 3 meters and a width of 1.6 meters
neonofarm [45]
Ok, so...what is the question?...
4 0
3 years ago
A pair of numbers that has the sum of 12 and a difference of eight
anygoal [31]

Answer:

2 ; 10

Step-by-step explanation:

a + B = 12

a - B = 8

a = 12 - B

(12 - B) - B = 8

a = 12 - B

12 - 2B = 8

B = 2

A = 10

7 0
2 years ago
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