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schepotkina [342]
4 years ago
11

Bill drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 7 hours. When Bill

Mathematics
1 answer:
RUDIKE [14]4 years ago
7 0

Answer: 315 miles

Step-by-step explanation:

let onward speed = x mph, then distance = 7x

return speed = (x+18) mph, (same) distance = 5(x+18)

equating the two,

7x = 5(x+18)

2x = 90 ==> x = 45 mph

so distance = 7*45 = 315 miles

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What is the rate of change?<br> X<br> у<br> 2.<br> 0<br> 3<br> 0<br> 4<br> 0
Nimfa-mama [501]

Answer:

m=0

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points from chart.</em>

Point (2, 0)

Point (3, 0)

<u>Step 2: Find slope </u><em><u>m</u></em>

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>.  Rate of change and slope are identical.

  1. Substitute [SF]:                     m=\frac{0-0}{3-2}
  2. Subtract:                               m=\frac{0}{1}
  3. Divide:                                  m=0
7 0
3 years ago
Jorge randomly selects a digit from 0 to 9. What is the probability that the digit he selects is a prime number?
zloy xaker [14]

Step-by-step explanation:

{0,1,2,3,4,5,6,7,8,9}--set of numbers from 0 to 9

{2,3,5,7}---set of prime numbers from 0 tp 9

there are 10 numbers in the first set and 4 numbers in the second set.

4/9 is the probability that the digit he selects is a prime number

Hope that helps :)

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3 years ago
Which methods could you use to calculate the y-coordinate of the midpointof a vertical line segment with endpoints at (0,0) and
vodka [1.7K]

Answer:

y-coordinate of midpoint of line segment joining the endpoints (0,0) and (0,15) is 7.5

Step-by-step explanation:

Given two end points of line segment that are (0,0) and (0,15). If we have to find the y-coordinate of midpoint of a vertical line segment then we apply mid point formula.

The Midpoint formula is used when one is need to find the exact center point between two given points.

The mid point M of line segment A(x_{1},y_{1}) and  B(x_{2},y_{2}) can be calculated as

M(\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})

Mid point of line joining the end points (0,0) and (0,15) is

M(\frac{0+0}{2},\frac{0+15}{2})=M(0,7.5)

Hence, y-coordinate of midpoint of line segment joining the endpoints (0,0) and (0,15) is 7.5

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In AUVW, v = 39 inches, u = 37 inches and ZU=66º. Find all possible values
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Answer:

Step-by-step explanation:

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