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Ivenika [448]
3 years ago
7

I think of a number, double it and add eleven. I get twenty five. Using the statement above form an equation using the letter x!

(Look in pic for more detail)

Mathematics
2 answers:
Wittaler [7]3 years ago
7 0

Answer:

2x + 11 = 25

x = 7

Step-by-step explanation:

Let the number be x.

Double of x and add 11 equals 25.

2x + 11 = 25

Solve the equation.

2x + 11 = 25

Subtract 11 on both sides.

2x = 25 - 11

2x = 14

Divide 2 on both sides.

x = 14/2

x = 7

aliya0001 [1]3 years ago
4 0

Answer:

b is 7 i think

Step-by-step explanation:

25-11=14÷2=7

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From points A and B, the distance between which is 1020 mi, two trains left simultaneously towards each other. The speed of one
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Complete question :

From points A and B, the distance between which is 1020 mi, two trains left simultaneously towards each other. The speed of one train was 10 mph greater than the speed of the other one. In 5 hours the trains had not met yet and were 170 mi apart. Find the speed of the trains.

Answer:

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Step-by-step explanation:

Given that :

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Hence, distance covered after 5 hours ;

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1020 - 170 = 850 miles

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5x + 5x + 50 = 850

10x = 850 - 50

10x = 800

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Answer:

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