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3 years ago

Find x (7x-11) (2x-3) (5x-2)

Mathematics

1 answer:

Tomtit [17]3 years ago

3 0

Answer:

x = 14

Step-by-step explanation:

Total angle measure of a triangle - 180°

Add all the angles together and make them equal to 180.

Solve for x.

7x - 11 + 5x - 2 + 2x - 3 = 180

14x - 16 = 180

14x - 16 + 16 = 180 + 16

14x = 196

$\frac{14x}{14} = \frac{196}{14}$

x = 14

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Answer:

2 can be taken out of both so the LCD is 2

Step-by-step explanation:

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3 years ago

A car has 15 gallons of gas in its tank. The car travels 35 miles per gallon of gas. It uses 135 of a gallon of gas to go 1 mile

STALIN [3.7K]

Answer:

525 miles

Step-by-step explanation:

Two unit rates are given in this problem:

miles per gallon
gallons per mile

Since we want to find miles, the appropriate rate to use is miles per gallon:

distance = mile/gallon x gallons

distance =35 miles/gallon x 15 gallons = 525 milles

The car can travel 525 miles on 15 gallons of gas.

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3 years ago

Find the distance in the coordanite plane between the two points and show ur work

Alexxandr [17]

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3 years ago

Can someone help me with these questions please

Nadya [2.5K]

Answer:

7/2 = 3.5

3.5+3.5 = 7

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yw ;)

6 0

3 years ago

Read 2 more answers

When Joey mowed lawns for 10 hours and walked dogo

ankoles [38]

The charges for mowing lawns are $5 per hour and charges for walking dogs are $3 per hour.

Step-by-step explanation:

Let,

x be the charge per hour for mowing lawns

y be the charge per hour for walking dogs

According to given statement;

10x+4y=62 Eqn 1

8x+5y=55 Eqn 2

Multiplying Eqn 1 by 5

$5(10x+4y=62)\\50x+20y=310\ \ \ Eqn\ 3$

Multiplying Eqn 2 by 4

$4(8x+5y=55)\\32x+20y=220\ \ \ Eqn\ 4\\$

Subtracting Eqn 4 from Eqn 3

$(50x+20y)-(32x+20y)=310-220\\50x+20y-32x-20y=90\\18x=90$

Dividing both sides by 18

$\frac{18x}{18}=\frac{90}{18}\\x=5$

Putting in Eqn 1

$10(5)+4y=62\\50+4y=62\\4y=62-50\\4y=12$

Dividing both sides by 4

$\frac{4y}{4}=\frac{12}{4}\\y=3$

The charges for mowing lawns are $5 per hour and charges for walking dogs are $3 per hour.

Keywords: linear equation, subtraction

Learn more about linear equations at:

#LearnwithBrainly

5 0

3 years ago