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Paraphin [41]
3 years ago
10

two trains leave the station at the same time, one heading west and the other heading east. the westbound train travels at 65 mi

les per hour. the eastbound train travels at 85 miles per hour. how long will it take for the two trains to be 390 miles apart
Mathematics
2 answers:
Yanka [14]3 years ago
4 0
Hour one:

Eastbound train- 65 mi
Westbound train- 85 mi

150 miles apart

Hour two:

Eastbound train- 130 mi
Westbound train- 170 mi

300 miles apart

Eastbound train travels 32.5 miles in 30 min, Westbound train travels 42.5 miles in 30 min

Two and a half hours:

Eastbound train- 162.5 mi
Westbound train- 212.5 mi
Sergeeva-Olga [200]3 years ago
3 0

Answer:

Step-by-step explanation:

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Which expression simplifies to 41? Choose all that apply!
Arada [10]

Answer:

None of the expressions is simplified to 41.

Step-by-step explanation:

You have to follow the P.E.M.D.A.S., this is:

P:Parentheses first.

E:Exponent next.

M:Multiplication.

D:Division.

(Multiplication and Division is whichever come first, from left to right)

A: Addition.

S: Subtraction.

(Addition and Subtraction is whichever come first, from left to right).

<u><em>We are going to analyze every option:</em></u>

1. 10+ 2.4 - 1

First we have to solve the multiplication:

10+ 2.4 - 1=10+8-1

Now we have to solve the addition and subtraction from left to right:

10+8-1=18-1=17\neq 41

This is not a correct answer.

2. 10+2.(4-1)

We have to solve the parentheses first:

10+2.(4-1)=10+2.(3)

Now the multiplication and then the addition.

10+2.(3)=10+6=16\neq 41

This is not a correct answer.

3. (10+23).4-1

We have to solve the parentheses first:

(10+23).4-1=(33).4-1

Now the multiplication and then the subtraction:

(33).4-1=132-1=131\neq 41

This is not a correct option.

4. 10+(2^2.4)-1

We have to solve the parentheses first, in the parenthesis first we have to solve: 2^2 and then do the multiplication.

10+(2^2.4)-1=10+(4.4)-1=10+16-1

Now we have to solve the addition and subtraction from left to right:

10+16-1=26-1=25\neq 41

This expression is not a correct option.

Then none of the expressions is simplified to 41.

5 0
3 years ago
Witch of the following is a true statement about a circle inscribed in a regular polygon
ss7ja [257]
The area of the circle is equal to the area of the polygon
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The table represents some points on the graph of a linear function.
labwork [276]

Answer:

Step-by-step explanation:

4 0
2 years ago
Make x the subject of the formula<br> p+x=t
yan [13]

Answer:

x=t-p

Step-by-step explanation:

just move p to the other side and since it crosses the equals sign so you have to change it from positive to negative

4 0
3 years ago
Read 2 more answers
3(m - 4) &lt; 27
Free_Kalibri [48]

Step-by-step explanation:

This is right m does equal 13. D first you multiply everything in the para thesis and so on

6 0
3 years ago
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