A family has two cars. The first car has a fuel efficiency of 15 miles per gallon of gas and the second has a fuel efficiency of 25 miles per gallon of gas. During one particular week, the two cars went a combined total of 1125 miles, for a total gas consumption of 55 gallons. How many gallons were consumed by each of the two cars that week?

Answers

Answer 1

Answer:

First car consumed 25 gallons

Second car consumed 30 gallons

Step-by-step explanation:

Let x = first car gallons

     y = second car gallons

15x + 25y = 1125

x + y = 55

Let's use substitution method

Subtract both sides of the bottom equation by y

x + y = 55

  - y     - y

x = 55 - y

Plug in the new x into the top equation

15(55 - y) + 25y = 1125

825 - 15y + 25y = 1125

10y + 825 = 1125

Subtract 825 from both sides

10y + 825 = 1125

      - 825    - 825

10y = 300

Divide by sides by 10

10y/10 = 300/10

y = 30

The second car consumed 30 gallons

Plug in the new y into one of the original equations; let's use the bottom one

x + 30 = 55

  - 30   - 30

x = 25

The first car consumed 25 gallons


Related Questions

Write root 3 x root 6 in the form b root 2 where b is an integer.

Answers

3 root 2

root 3 x root 6 = root 18

to write it in its simplest form, we have to reduce the number to a situation, where we have a product that includes a perfect square and and another number

let me break that down

let us use another example;

root 8

we think of the largest perfect square that is also a factor of 8

then, we conclude to our answer; 4

next, we think of the number that multiplies with 4 to give is 8 and that is 2

so, we bring the 4 outside by square rooting it and everything gives us

2 root 2

to open this, we just square the 2 outside and multiply it by the 2 inside to give us root 8

if we apply this example to our question,

root 18 = root 9 * 2

this is because 9 is the largest square and factor of 18 and 2 multiplies with 9 which gives us root 9 * 2

then, we square root 9 to give us 3 and we bring this 3 out to give us

3 root 2

hope this helps.

if you do not understand, just send me a message

thank you

Which graph shows y = x2 + 3x – 4?
IN
vu

Answers

Answer: it’s the third graph

Which inequality pairs with ys-2x-1 to complete the
system of linear inequalities represented by the graph?
O y<-2x+2
O y>-2x+2
O y<2x-2
O y>2x-2

Answers

Answer:

the answer is the last option, y > 2x-2

The system of linear inequalities y ≤ -2x - 1 and y > -2x + 3 is represented by the graph

Inequality

Inequality is an expression that shows the non equal comparison of two or more numbers and variables

Given the inequalities y ≤ -2x - 1 and y > -2x + 3, plotting the two inequalities using the geogebra online graphing tool.

The system of linear inequalities y ≤ -2x - 1 and y > -2x + 3 is represented by the graph

Find out more on Inequality at: brainly.com/question/24372553

What is the value of 55 x 2 ÷ 11 - 10
A) 0
B) 1
C) 9
D) 27.5

Answers

A)0 55 x 2 is 110 divided by 11 would be 10-10 =0

Answer: 0

Explanation: Divide 2 and 11, and you get 2/11 and multiply that with 55 you get 10 and 10 - 10 equals 0! ^^

may y’all help me<33……..

Answers

Answer:

68

Step-by-step explanation:

Hope this helps! Pls give brainliest!

Answer:68

Step-by-step explanation:

5+9*7=68

I need help with this please

Answers

Answer:

5

Step-by-step explanation:

4x5+12=32mm

Find x. Round to the correct number of decimal places.

Answers

Step-by-step explanation:

Using Trigonometry,

Let the height be AD, angle containing 90° be B and the angle containing 65° be C, respectively.

cos 30° = AD/40

AD= 40√3/2 = 20√3.

<DAC = 25°.

cos 25° = AD/AC

0.90 = 20√3/AC

AC = 38.49. is the value of x.

please try to understand the marking accordingly.

hope this helps you.

hello there

im looking for help here. giving brainliest if im able to.

Find the volume of a box with the following measurements:

l=7cm

w=3cm



h=10 cm

Answers

Answer:

210cm cubed

Step-by-step explanation:

Width x length x height

3x7x10

Volume = length * width * height

7*3*10= 210cm^3

Determine whether the equation 4x + y =6. If so graph the function

Answers

Answer:

4x + y = 6 is a function.   The graph will cross the y-axis at point (0, 6)  and crosses the x-axis at point (1.5, 0)

Step-by-step explanation:

Solve for y:  4x + y = 6

                      y = -4x + 6

Slope is -4 and the y-intersect is 6.  

Now solve for x when y = 0. This action will give you the x-intersect.

 4x + y = 6

 4x + 0 = 6

  4x = 6

    x = 6/4 or 1.5                            

The graph will cross the y-axis at point (0, 6)  and crosses the x-axis at point (1.5, 0)

The chandlers are moving across the country. Mr.Chandler leaves 4.5 hours before Mrs.Chandler. If he averages 35 mph and she averages 65 mph, how many hours will it take Mrs.Chandler to catch up to Mr.Chandler

Answers

it will take about 4.7 hours since u dont know what time she left so the time will be shown as x and if they are averagely going the same speed then it will take around the same time or.about 4.5 or 4.6 around this time she will catch up to him since he's cruising and she's in a sport race just some difference

Answer:5.25

Step-by-step explanation:

Rate×Time=Distance

Drive Rate Time Distance

Mr. Chandler's drive 35 4.5+x 35(4.5+x)

Mrs. Chandler's drive 65 x 65x

35(4.5+x)= 65x

157.5 + 35x= 65x

157.5 = 30x

5.25 = x

Solve for y
13.5
12
9
10.5

Answers

the answer is 9 because I did the math

Answer:

y = 9

Step-by-step explanation:

1. We know that the line the angles fall on is a straight angle, meaning it's worth 180°.

2. Given the information above, 8y + 96 + 12 = 180.

3. (Solving equation above).

Step 1: Simplify both sides of the equation.

[tex](8y)+(96+12)=180[/tex] [tex]8y + 108=180[/tex]

Step 2: Subtract 108 from both sides.

[tex]8y + 108 - 108 = 180 - 108[/tex] [tex]8y = 72[/tex]

Step 3: Divide both sides by 8.

[tex]\frac{8y}{8}=\frac{72}{8}[/tex] [tex]y = 9[/tex]

Step 4: Check if solution is correct.

[tex]8(9)+96+12=180[/tex] [tex]72+96+12=180[/tex] [tex]168+12=180[/tex] [tex]180=180[/tex]

Therefore, y = 9.

The label of a bag of trail mix says it has 180calories per 15ounces. What is the rate of calories per ounce?

Answers

Answer:

12calories per 1ounce

Step-by-step explanation:

Please Help with number 28

Answers

Answer:

Step-by-step explanation:

[tex]\dfrac{\dfrac{2}{7}*9}{\dfrac{2}{7}}= 9[/tex]

2/7 in the numerator and denominator will get cancelled

Pls help. Pls pls pls

Answers

Answer:

idj

Step-by-step explanation:

hope this helps

Given: AD, What statements are true regarding the given statement and diagram? EB bisects LAEC IZCED is a right angle. ZCEA is a right angle. a mZCEA = 1 2 (mZCEB) C mZCEB = m_BEA B mZ DEB = 135° MZAEB = 35° A E​

Answers

The option first, option second, option fourth, and option fifth are correct.

What is an angle?

When two lines or rays converge at the same point, the measurement between them is called a "Angle."

We have:

AD

EB bisect angle AEC

From the figure:

Angle CED is a right-angle triangle

So,

Angle CEA is also a right-angle triangle

Angle CEB = Angle BEA = 90/2 = 45 degrees

Angle DEB = Angle CED + Angle CEB = 90 + 45 = 135 degrees

Thus, the option first, option second, option fourth, and option fifth are correct.

Learn more about the angle here:

brainly.com/question/7116550

#SPJ1

Help??? Thank youu!!!

Answers

Answer:

The time on the clock is 9:18

Answer:

The clock shows the time of 09:18.

A cylinder oil tank 8 foot deep hole it’s 580 gallons Winfield to capacity how many gallons remain in the tank on the depth of oil is 6 1/2 feet

Answers

Answer:

253.75

Step-by-step explanation:

Total height of the cylinder is  8 ft . Since the tank holds 580 gallons when filled to capacity so in 1 ft height there will be  \frac{580}{8}  gallons oil when filled to capacity .

What is the height of a triangle that has an area of 24 in.2 and a base with a length of 8 in.?

Answers

Answer:⬇️⬇️⬇️⬇️

Step-by-step explanation: Area of a triangle = ½base times height⇒ A = ½bh

Given that the area is 24 and the base is 8, we would have this equation

24 = ½(8)h

24 = 4h divide both sides by 4

6 = h So the height of the triangle is 6 feet

CHECK

A = ½bh

24 = ½(8)(6)

24 = 4(6)

24 = 24√

find f(x)•g(x)

pls helpppp

Answers

Answer:this is the answer of the question like at it

Make a tree diagram to show all the possible sequences of answers for six multiple-choice questions, each with three possible responses. Assuming that you are guessing the answers so that all outcomes listed in the tree are equally likely, what is the probability that you will guess the one sequence that contains all six correct answers? (Round your answer to five decimal places.)

Answers

Answer:

Steps and solution in the attached picture.

Step-by-step explanation:

Steps and solution in the attached picture.

Based on the information given, the probability that all three are correct will be 0.0000217.

How to calculate the probability

From the information given, there are six multiple-choice questions, each with three possible responses.

If an individual is guessing the answers so that all outcomes listed in the tree are equally likely, the probability that the person will guess the one sequence that contains all six correct answers will be:

A = correct answer = 1/6

B = incorrect answer = 1 - 1/6 = 5/6

The probability of guessing the correct answer will be:

= 1/6 × 1/6 × 1/6 × 1/6 × 1/6 × 1/6

= 0.0000217

Learn more about probability on:

brainly.com/question/25870256

help please thank you

Answers

the answer of this question is B

Use the point and the slope to graph each line. Write the equation of the line. The line passes through point (2,-2) and is parallel to a line that has slope -1.

Answers

Answer:

y= -x

Step-by-step explanation:

slope- intercept form

y= mx +c, where m is the slope and c is the y-intercept.

Given that the slope is -1, m= -1.

Substitute m= -1 into the equation:

y= -x +c

To find the value of c, substitute a pair of coordinates into the equation.

When x= 2, y= -2,

-2= -2 +c

c= -2 +2

c= 0

Thus, the equation of the line is y= -x.

The figure below shows parallel lines cut by a transversal. Which statement is true about angles 1 and 2?

A. Angles 1 and 2 are complementary because they are a pair of corresponding angles.
B. Angles 1 and 2 are congruent because they are a pair of corresponding angles.
C. Angles 1 and 2 are complementary because they are a pair of alternate interior angles.
D. Angles 1 and 2 are congruent because they are a pair of alternate interior angles.​

Answers

Answer:

The answer is B. they are congruent because they are a pair of corresponding angles.

Answer:

B)

Step-by-step explanation:

Angles 1 and two are corresponding angles, because if you were to move the top line down, the two angles would be in the exact same spot.

Write an equation of the line that passes through the given point and has the given slope.
(1,-5); slope -3/2

Answers

Answer:

y – y 1 = m ( x – x 1 ) m = your slope ( x 1 , y 1 ) = your point y – ( − 5 ) = − 3 2 ( x – 1 ) y + 5 = − 3 2 ( x – 1 ) Now we need to do a little algebra to get the equation in standard form: A x + B y = C , where A, B and C are relatively prime integers. y + 5 = − 3 2 x + 3 2 3 2 x + y = 3 2 − 5 now let's multiply through with 2 to get rid if the fractions: 2 ( 3 2 x + y = 3 2 − 5 ) 3 x + 2 y = 3 − 10 3 x + 2 y = 7

Step-by-step explanation:

What is the value of x?
34
146
56
68
34

Answers

Answer:

34 ° is the answer as vertically opposite angles are equal

Help help please please

Answers

The fraction would be 3/20

Answer: 3/20

Step-by-step explanation:

0.150 is equal to 150 thousandths. You can write this in its fractional form, which is:

150/1000

More simplification:

(150/50)/(1000/50)=3/20.

Pls help on this question 30 POINTS!!

Answers

10
Chloride
Elements

Answer:

The Noble gases are the least reactive of any elements on the periodic table.

Explanation:

All of the elements in Group Zero are noble gases. The list includes helium, neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). They are also called inert gases because they do not react with other elements of periodic table. The reason behind their inertness is that their outermost shell is complete and they do not have the tendency to lose or gain electrons.

Answer:

The Halogens form acidic compounds with hydrogen

Explanation:

The non metals in group 7 of the periodic table are known as the halogens. When they react wit hydrogen their respective acid is formed For example, hydrogen chloride (HCl)is produced when hydrogen combines with Chlorine and in the same way Hydrogen Bromide is produced when Bromine reacts with hydrogen.

Answer:

The halogens are the most reactive among all the non metals

Explanation:

The non-metal elements in Group 7 are known as the halogens which consist of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).  They get less reactive as we go down the group. This is the opposite trend to that seen in the alkali metals in Group 1 of the periodic table which are reactive among metals.

If varies directly as y and y = 15 when = 25. If = 155 then y is​

Answers

Answer:

y = 93

Step-by-step explanation:

I assume the other variable is x.

"If x varies directly as y and y = 15 when x = 25. If x = 155 then y is​"

Direct variation:

x = ky

25 = k * 15

k = 25/15

k = 5/3

The direct variation equation is

x = (5/3)y

155 = (5/3)y

y = 155 * 3/5

y = 93

Express 8mm as a percentage of 4mm​

Answers

Answer:
200%

Explanation:
8/4*100=?
8/4=2
2*100=200%
200% because 8 over 4 is 2 and 2 times 100 is 200%

Graph the line with slope 1/2 and y-intercept −4.

Answers

Answer:

Check out the image below.

Step-by-step explanation:

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