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jekas [21]
3 years ago
15

for 8 days of very hot weather, the water level in a lake dropped 3 inches per day. on the ninth day, storms raised the level 6

inches. Write and find the value of an expression for the change in the water level of the lake during these 9 days.
Mathematics
1 answer:
hoa [83]3 years ago
3 0
The water level dropped 18 inches
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The scale of a model train is 1 inch to 13.5 ft. One of the cars of the model train is 5inches long. What is the length in feet
aleksklad [387]

Answer:

The length of the actual train's car is <u>67.5 feet.</u>

Step-by-step explanation:

Given:

The scale of a model train is 1 inch to 13.5 ft.

Now, to get the length of the actual car of the train.

Let the length of actual train's car be x.

And, the length of the car of model train = 5\ inches\ long.

<em>According to the scale of the model train, 1 inch is equivalent to 13.5 ft. </em>

<em>Thus, 5 inches is equivalent to </em>x.<em />

Now, to get the length of actual train's car using cross multiplication method:

\frac{1}{13.5} =\frac{5}{x}

By cross multiplying we get:

x=67.5\ feet.

Therefore, the length of the actual train's car is 67.5 feet.

7 0
3 years ago
Which should be filed immediately before 32754? A) 32768 B) 32636 C) 31070 D) 3275 E) 32658
victus00 [196]

The number that will be immediately filled before 32754 is 32658

Option E is correct.

8 0
3 years ago
Read 2 more answers
2. What is the variable in the expression:<br> 13x3 +7<br> (Select one answer)<br> 7<br> 3<br> 13
sdas [7]
I think it would be 3
3 0
3 years ago
Use the distributive property to remove the parentheses in the following expression 6(m+5)=
coldgirl [10]
6m+30 is the answer.
Multiply 6 and m and you get 6m.
Multiply 6 and 6 and you get 30.
6m+30
5 0
4 years ago
Read 2 more answers
Solve the system of equations. <br> x+2y=0 <br> 6y= - 3x
Alborosie

Answer:

Infinitely Many Solutions.

Step-by-step explanation:

x+2y=0

6y=-3x

y=-3/6x

y=-1/2x

x+2(-1/2x)=0

x-2/2x=0

x-x=0

0=0

infinitely many solutions

8 0
3 years ago
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