Ask question

Ask question

All categories

2 years ago

13

Greg is traveling north on a road while Peter is traveling south on the same road. They pass by each other at noon, Greg driving

at 40 mph and peter driving 30 mph. At what time will they be at 315 mph?

1 answer:

max2010maxim [7]2 years ago

5 0

40x+30x=315

70x=315

315/70= 4.5 hours

12:00 noon + 4.5 hours = 4:30 pm

You might be interested in

What percent is equivalent to 7/20

expeople1 [14]

35%
divide whatever number you get move the decimal two spaces to the right and that is the percent.

4 0

3 years ago

What is 49% of 849 ?

Sholpan [36]

Answer:

416.01

Step-by-step explanation:

49% is the same as 0.49

0.49 × 849 is 416.01

6 0

2 years ago

Which relation is a function?( click all that apply)

weeeeeb [17]

A, B, D are functions.
(First, second, and fourth response)
You can see which is function since for everyone input only has one value. You can also use the vertical line test.

7 0

2 years ago

Solve using the elimination method:<br> X-3y=7<br> 3x + 3y=9

sergij07 [2.7K]

Answer:

$x=4\\\\y=-1$

Step-by-step explanation:

Given Equation:

$x-3y=7$ Equation:1

$3x + 3y=9$ Equation:2

Dividing Equation:2 by '3' both the sides:

$x+y=3$

or $x=3-y$ Equation:3

Putting the vale of 'x' in Equation:1

$x-3y=7$

$(3-y)-3y=7\\\\3-y-3y=7\\\\3-4y=7\\\\$

Subtracting '3' both sides

$-4y=7-3\\\\-4y=4$

$y=\frac{4}{-4}$

$y=-1$

Putting value of 'y' in Equation:3

$x=3-y$

$x=3-(-1)\\\\x=3+1\\\\x=4$

The solution of the equations is :

$x=4\\\\y=-1$

7 0

3 years ago

Write the equation of a line in slope-intercept form that passes through the point (0,-7) and has a slope of 3/4.

kondor19780726 [428]

Answer:

y=3/4x-7

Step-by-step explanation:

(0,-7) is the y-intercept

3/4 is the slope

y=mx+b

m is the slope

b is the y-intercept

plug it in:

y=3/4x-7

please mark brainliest!

4 0

2 years ago