1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sidana [21]
3 years ago
11

an engineer estimates that 30% of gasoline is used efficiently by a car. how many gallons,out of 20 gallons, are used efficientl

y?
Mathematics
1 answer:
juin [17]3 years ago
3 0

We need to find 30% of 20 gallons.

1) We can write a proportion

20 gallons ---- 100%

x gallons --------30%

x = 20*30/100 = 6 gallons

2) Or we can write 30% as decimal.

30% = 30/100 = 0.3

0.3 of 20 = 0.3*20 =6 gallons

Answer 6 gallons are used efficiently.

You might be interested in
X
Oxana [17]
I don’t quite understand this question since it’s all spaced out and there’s no picture but since domain is x/the indecent variable, “x = -6, -1, 0, 3” (the first answer choice” is correct
3 0
3 years ago
What number line model represents the expression 2.5+4.5<br>Choose 1 answer: A, B, or C?<br><br>​
a_sh-v [17]

Answer:

A

Step-by-step explanation:

Because, the first point will be plotted at 2.5 (each line is 1 which means like line after 0 is 1, the next one is 2, and so one). When you add 2.5 with 4.5 it equals to 7 which means the next point will be placed at 7. (right behind 8)

3 0
3 years ago
32,005,008 in expanded form​
Step2247 [10]

Answer:(3 x 10000000) + (2 x 1000000) + (0 x 100000) + (0 x 10000) + (5 x 1000) + (0 x 100) + (0 x 10) + (8 x 1)

Step-by-step explanation: Use the place value to help you .

3 0
3 years ago
Read 2 more answers
a rectangle with width of 7 and length of 9 has a square of side length 5 cut out of it. what is the area of the rectangle after
dezoksy [38]
Area of rectangle is 7x9 which is 63
Area of the square=5x5 which is 25
So area is: 63-25=38
6 0
3 years ago
Hi everyone this is the last question can you please help me for brainliest
BabaBlast [244]
I think that the answer is 8
8 0
3 years ago
Other questions:
  • A chord is 5 inches from the center of a circle whose diameter is 26 inches. What is the number of centimeters in the length of
    8·1 answer
  • 4(-32x+5)-(-33x-26)=
    6·2 answers
  • Suki gets a job that pays $31000 per year. she is promised a $2200 raise each year. at this rate, what will her salary be in 7 y
    12·2 answers
  • Add. (-5+2i)+(3-4i) A. -8-6i. B.-8+6i. C.-2-2i. D.-2+2i
    7·1 answer
  • The graph of y =ex is transformed as shown in the graph below. Which equation represents the transformed function?
    6·1 answer
  • Solve for r.<br> K = 8r-s
    14·1 answer
  • truth or false? a system of two linear inequalities has either no points or infinitely many points in its solution
    9·2 answers
  • Pls help I need it can you answer this question for me <br> Evaluate 8^8/3 =
    12·1 answer
  • 2. What is the total cost of 1 loaf of bread, 1 gallon of milk, 2 bags of chips, 2 1 point
    12·2 answers
  • Suppose the linear regression line y = 2.1x + 130 predicts sales based on the
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!