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
GuDViN [60]
3 years ago
15

Average speed of Car 1 = 35 mph. Average speed of Car 2 = 55 mph. Time elapsed between start of Car 1 and start of Car 2 = 18 mi

nutes.
How long before Car 2 overtakes Car 1? ___________ hour.
Mathematics
2 answers:
Anna [14]3 years ago
5 0

Answer:

.525

Step-by-step explanation:

35(t+18/60) = 55t

35t +10.5 = 55t  

10.5 = 20t

0.525 = t

maxonik [38]3 years ago
3 0
It should be after 6 hours
You might be interested in
Polygon Q is a scaled copy of Polygon P. The value of x is 6, what is the scale factor?
ANTONII [103]

Answer:

B. 3/4

Step-by-step explanation:

I just did it and got it right

3 0
2 years ago
1. If Jeremy found 80% of the collector cards and Tim found 41 of the 45 cards,
baherus [9]

Answer:

Tim has more

Step-by-step explanation:

41/45 when you type it into a calculator is 91% and 91%>80%

6 0
2 years ago
Making handcrafted pottery usually takes two major steps:wheel throwing and firing. The time of wheel throwing and thetime of fi
levacccp [35]

Answer:

a) P(R

And we can find this probability using the normal standard table or excel and we got:

P(z

b) P(R>110)=P(\frac{R-\mu}{\sigma}>\frac{110-\mu}{\sigma})=P(Z>\frac{110-100}{3.606})=P(Z>2.774)

And we can find this probability using the complement rule and the normal standard table or excel and we got:

P(z>2.774)=1-P(Z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Part a

Let X the random variable that represent the time for the step 1 and Y the time for the step 2, we define the random variable R= X+Y for the total time and the distribution for R assuming independence between X and Y is:

R \sim N(40+60 = 100,\sqrt{2^2 +3^2}= 3.606 s)  

Where \mu=65.5 and \sigma=2.6

We are interested on this probability

P(R

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{R-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(R

And we can find this probability using the normal standard table or excel and we got:

P(z

Part b

P(R>110)=P(\frac{R-\mu}{\sigma}>\frac{110-\mu}{\sigma})=P(Z>\frac{110-100}{3.606})=P(Z>2.774)

And we can find this probability using the complement rule and the normal standard table or excel and we got:

P(z>2.774)=1-P(Z

8 0
3 years ago
Read 2 more answers
Find the square: (5x - 4y)2 <br><br> (and please put the process of solving the equation)
satela [25.4K]
(5x-4y)^2
(5x-4y)(5x-4y)

Multiply each term in one bracket in turn by the terms in the other bracket

(5x)(5x) = 25x^2
(5x)(-4y)=-20xy
(-4y)(5x)=-20xy
(-4y)(-4y)=16y^2

Put them together we have
25x^2-20xy-20xy-16y^2
25x^2-40xy-16y^2
7 0
3 years ago
Which statements are true based on the diagram? <br> Check all that apply.
natulia [17]

Answer: where is statements

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Find the quotient. Simplify completely. Please show work.
    8·1 answer
  • A set of equations is given below:
    6·2 answers
  • Help me please!!!!!!!!!!!
    11·1 answer
  • Define a new random variable by y = 2px. show that, as p l 0, the mgf of y converges to that of a chi squared random variable wi
    6·1 answer
  • Which of the following is most likely to bra relative maximum for this graph?
    15·1 answer
  • In a survey of 150 students, 90 students were taking algebra and 30 were taking biology. What is the least number of students wh
    9·2 answers
  • PLEASE HELP TIMED
    15·1 answer
  • PLEASE HURRY!!!!!!!!
    6·1 answer
  • I need the answer qiuck because its urgent​
    7·1 answer
  • Select THREE expressions equivalent to -81x + 27.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!