2 years ago

David travels from Building A to Building B. He can either cycle

Mathematics

1 answer:

Lelechka [254]2 years ago

3 0

Answer:

43 minutes

Step-by-step explanation:

Let cycling speed be x and driving speed be y

Equations as per given, considering same distance in both cases:

19x + 8y = 13x + 10y
19x - 13x = 10y - 8y
6x = 2y
3x = y

We see that driving speed is 3 times greater than cycling speed

Then 8 minutes driving = 8*3= 24 minutes of cycling, or 10 minutes of driving = 10*3= 30 minutes of cycling:

19 + 24 = 43 minutes or
13 + 10*3 = 43 minutes is the time to cycle between A and B

You might be interested in

The perimeter of a rectangle is 99 inches. It’s width is 11 inches. What is the length of the rectangle? Solve algebraically and

Crank

2 (11)+2x=99
22+2x=99
2x=77
X=77/2
Width=77/2

3 0

2 years ago

Use slope-intercept form to write the equation of a line

Korvikt [17]

Answer:

y=-3x-2

Step-by-step explanation:

There is enough information to make a point-slope form equation that which we can convert into slope-intercept form.

Point-slope form is: $y-y_1=m(x-x_1)$

We are given the slope of -3 and the point of (1,-5).

$y-y_1=m(x-x_1)\rightarrow y+5=-3(x-1)$

Convert into Slope-Intercept Form:

$y+5=-3(x-1)\\y+5-5=-3(x-1)-5\\\boxed{y=-3x-2}$

8 0

2 years ago

A. Rotation of 180º and then a reflection across the x-axis.

Trava [24]

Hope this helps!

Please vote brainliest

3 0

2 years ago

9x + 8y3 – 7 = 3y3 -3 9x+ 5y = 0

Vikki [24]

Answer:

102 actually just add it up

Step-by-step explanation:

add it up

5 0

2 years ago

You buy a hat for $12 and give the cashier a $20 bill. How much change do you receive? An expression is . The change received is

Art [367]

Answer:

8 dollars the cashier owes you

7 0

2 years ago