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Zigmanuir [339]
2 years ago
14

Two cars traveled equal distances in different amounts of time. Car A traveled the distance in 2 h, and Car B traveled the dista

nce in 1.5 h. Car B traveled 15 mph faster than Car A. How fast did Car B travel? (The formula R·T=D , where R is the rate of speed, T is the time, and D is the distance can be used.) Enter your answer for the box.
Mathematics
2 answers:
Vilka [71]2 years ago
7 0
B=60mph + A=2mph do a+b=62mph
irakobra [83]2 years ago
4 0

Answer: Car B traveled 60 mph.

Step-by-step explanation:

A= B-15

A: (B - 15)(2 hr)=D

B: (B)(1.5)=D

Since B and A traveled the same distance you can plug in 1.5B for D.

2B - 30 = 1.5B

-1.5B +30 = -1.5B

——————+30—

2(0.5B) = 2(30)

B = 60 mph

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Describe the value of the 9 in 926,415 use at least 2 terms from the word list in your explanation
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Answer:

The value of 9 in 926,415 is nine hundred thousands

Step-by-step explanation:

* Lets explain how to write a number in the expand form

- Expand form is a way of writing numbers to see the math value

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- Ex: the expand form of 23,456 is 20,000 + 3,000 + 400 + 50 + 6

- Place value is the value represented by a digit in a number

- Ex: the place value of 5 in 250 is tens

* <em>Lets solve the problem</em>

- The number is 926,415

- The number formed from 6 digits

- The expand form of the number is:

  926,415 = 900,000 + 20,000 + 6,000 + 400 + 10 + 5

- <em>Lets write the place value of each digit</em>

# The place value of 5 is ones

# The place value of 1 is tens

# The place value of 4 is hundreds

# The place value of 6 is thousands

# the place value of 2 is ten thousands

# The place value of 9 is hundred thousands

∴  The place value of 9 in the number is hundred thousands

∴ The value of 9 in 926,415 is nine hundred thousands

8 0
3 years ago
I'LL GIVE THE BRAINLIEST!
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Step-by-step explanation:

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3 years ago
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Verdich [7]

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Step-by-step explanation:

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2 years ago
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Find the quotient: 40 ÷ 7
netineya [11]

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Step-by-step explanation:

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A set of wrist watch prices are normally distributed with a mean of 767676 dollars and a standard deviation of 101010 dollars. W
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Step-by-step explanation:

Data

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  • standard deviation, sd: $10
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  • second value of interest, x2: $90

z-score for x1:

z1 = (x1 - mean)/sd = (63 - 76)/10 = -1.3

z-score for x2:

z2 = (x2 - mean)/sd = (90 - 76)/10 =  1.4

The  proportion of wrist watch prices are between $63 and $90 is:

P(z1 < z < z2) = P(z < 1.4) - P(z < -1.3)

P(z < 1.4) = 0.9192 (see first picture attached)

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P(z1 < z < z2) = 0.9192 - 0.0968 = 0.8224

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