Ask question

Ask question

All categories

3 years ago

5

Dave is meeting his friends at 7:30 P.M. The average speed of the bus is 28 km/h, and he needs to travel 20 km. When should he c

atch his bus? Describe your strategy and whether it was appropriate.

1 answer:

Gwar [14]3 years ago

7 0

20 / 28 = 0,7
0,7 * 60 = 42

Dave should catch the bus at 6:48 PM.

You might be interested in

a right triangle has a non hypotenuse side length of 45" and the hypotenuse measures 53". What is the length of the other non-hy

Ede4ka [16]

Answer:

28"

Step-by-step explanation:

the length of the other non-hypotenuse side =

√(53² - 45²) =√(2809-2025) =√784 = 28"

7 0

3 years ago

Read 2 more answers

Olivia is making bead bracelets for her friends. She can make 3 bracelets in 15 minutes.Now find the constant of proportionality

harkovskaia [24]

Answer:

so, 15 divided by 3 is 5. so the constant of proportionality is 5. and 60 seconds for the minute, divided by 5 is................12.

if this is wrong im sorry. Hope i helped!

3 0

3 years ago

Someone help me I need to get this finished by tomorrow ASAP

zysi [14]

X=2 shown in the work below.

4 0

3 years ago

Find the sum and product of the roots. 2x^2 + 6x - 8 = 0

netineya [11]

Suppose you can factorize:

$ax^2+bx+c=a(x-r_1)(x-r_2)$

Then by expanding the right side, you have

$ax^2+bx+c=a(x^2-(r_1+r_2)x+r_1r_2)=ax^2-a(r_1+r_2)x+ar_1r_2$

which means in this case, you have to have

$\begin{cases}6=-2(r_1+r_2)\\-8=2r_1r_2\end{cases}\implies\begin{cases}r_1+r_2=-3\\r_1r_2=-4\end{cases}$

3 0

3 years ago

Solve <br> 5x+y=-17 8x-3y=-18

Olenka [21]

Answer:

x = -3

y = -2

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers