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3 years ago

The answers are already there, I just need the work. I'm giving all of my points into this one :)

Mathematics

1 answer:

Radda [10]3 years ago

5 0

I can’t see the image :(

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A train traveled 240 km in 2.5 hours and then slowed down traveling the final 180 km in 2 hours. What was the train's average sp

sesenic [268]

Average speed=Total Distance Covered\<span>Total time take<span>n
T.D=240+180=420
T.T=2.5+2=4.5
420\4.5=93.3 km\h
answer=D</span></span>

7 0

3 years ago

A store offers 20% off all items. If x is the original purchase price, which expression represents the final price with the disc

Keith_Richards [23]

Answer:

20%-X=a

Step-by-step explanation:

So if there is a toy that cost $50 and it was 20% off it would then cost $40

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2 years ago

What are some helpful tricks to know when solving non homogenous second order differential equation

DiKsa [7]

Science is the answer

4 0

3 years ago

To make 100g of jam you need 57g

asambeis [7]

Answer:

The ratio of blackberries to sugar is 13 : 56 or 13/56, which is already in the in the simplest form.

Step-by-step explanation:

As we have to make 100g of jam

Amount of strawberries = 57g

Amount of blackberries = 13g

Thus

The amount of sugar needs to be added to the mixture: 100 - (57 - 13) = 56g

Therefore, the ratio of blackberries to sugar is 13 : 56 or 13/56, which is already in the in the simplest form.

8 0

3 years ago

Andrew is elder to Brian by 2 years. Andrew's father Frank is twiceas old as Andrew, and Brian is twice as old as his sister Sar

babunello [35]

Let "x" represent the age of Brian.

Andrew is elder than Brian by 2 years, we can symbolize his age as "x+2"

Frank is twice as old as Andrew, we can symbolize his age as "2(x+2)"

Sarah has half the age of Brian's, we can symbolize her age as "x/2"

Frank ans Sarah's ages differ by 40 years, we can symbolize this as:

$2(x+2)-\frac{x}{2}=40$

Solve the term is parenthesis

$\begin{gathered} 2x+4-\frac{1}{2}x=40 \\ 2x-\frac{1}{2}x+4=40 \\ \frac{3}{2}x=40-4 \\ \frac{3}{2}x=36 \\ x=24 \end{gathered}$

x=24 years

Andrew's age is

$x+2=24+2=26$

Andrew is 26 years old

3 0

1 year ago