1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
wolverine [178]
3 years ago
9

Two cars start at the same time, but travel in opposite directions. One car's average speed is 20 miles per hour (mph). At the e

nd of 2 hours, the two cars are 120 miles apart. Find the
average speed in mph of the other car. (Enter an exact number.)
help
X mph
Need Help?
Read it
Mathematics
1 answer:
Otrada [13]3 years ago
5 0

Answer:

The first car's speed is 40 mph. 2 hours at that rate equals 80 miles. So:

 

140-80=60

60 miles/2 hours=30 mph as the rate of the second car.

Step-by-step explanation:

You might be interested in
HELP!! Examine this system of equations. Which numbers can be multiplied by each equation so that when the two equations are add
vekshin1
1/4*x -  1/6*y= 5    |*18    
4/5 *x + 3/8*y = 10 | *8

18/4*x                  -3*y= 90
32/5*x                + 3y   = 80
-------------------------
18/4*x+32/5*x   /       = 170

The answer is a





4 0
3 years ago
Help answer asap pls ---------
Reika [66]

Answer:

d = 5

Step-by-step explanation:

We want to know what d would be when x = -1, so we can start off by plugging in -1 for x to get the following equation: \sqrt{8 - (-1)} = 2(-1)+d. On the left hand side, 2 negatives become a positive sign, so the -(-1) becomes a +1, and 8+1 would equal 9. On the right hand side, we just multiply 2 and -1 to get -2. So, the equation now looks like this: \sqrt{9} = d-2. We know that \sqrt{9} = 3, so we would get 3 = d-2. THen we would add 2 to both sides to get d = 5. Hope this helps!

8 0
3 years ago
How are ∠1 and ∠2 related
andreyandreev [35.5K]

Answer:

  • D. They are adjacent

Step-by-step explanation:

Angles 1 and 2 have common side, so they are adjacent. They are not making a right or straight angle.

Correct choice is D

7 0
2 years ago
A recent survey of 8,000 high school students found that the mean price of a prom dress was $195.00 with a standard deviation of
KiRa [710]

To calculate the z-statistic, we must first calculate the standard error.

Standard error is standard deviation divided by the square root of the population. In this case, it is equal to 2.68.

The z-score is defined the distance from the sample to the population mean in units of standard error.

z = (195 – 208)/2.68 = -4.86

5 0
3 years ago
You wonder how many cars there are in your area. You call up the Ford dealership and ask how many Fords they’ve sold. They repor
SVETLANKA909090 [29]
If we take 1200 as the 100%, how much percentage is 700 of it?

well \bf \begin{array}{ccllll}
amount&\%\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
1200&100\\
700&x
\end{array}\implies \cfrac{1200}{700}=\cfrac{100}{x}\implies x=\cfrac{700\cdot 100}{1200}
\\\\\\
x=\cfrac{175}{3}

so, (175/3)% or roughly 58.3%

now, how much is (175/3)% of 15000 ?
well, if we take 15000 as the 100%
then   \bf \begin{array}{ccllll}
amount&\%\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
15000&100\\
x&\frac{175}{3}
\end{array}\implies \cfrac{15000}{x}=\cfrac{100}{\frac{175}{3}}
\\\\\\
\cfrac{15000\cdot \frac{175}{3}}{100}=x\implies \cfrac{5000\cdot 175}{100}=x
6 0
3 years ago
Other questions:
  • Please help me out with this question
    13·2 answers
  • PLEASE MATH HELP DESPERATE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WILL DO ANYTHING PLEASE. WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!
    6·2 answers
  • A seed store buys seeds in bulk and then sells them by the pound. If the store owner spends $215 on sunflower seeds and then sel
    9·1 answer
  • Find the domain and range from the function listed below.
    8·1 answer
  • 84 of %300. i somehow got 24 but the answer was something like 252, i dont really get how. can you help?
    8·2 answers
  • Please help me branniest
    5·1 answer
  • Find the slope of the line passing through the points 3, 4 and 8 , -3 .
    14·1 answer
  • CORRECT ANSWER GETS BRAINLIEST<br><br><br>Find the total surface area of the cubic box below.
    7·1 answer
  • What happens when a figure is dilated .
    10·1 answer
  • 15×15×2+10-1=?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!