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
S_A_V [24]
2 years ago
6

Review the bar graph below:

Mathematics
1 answer:
Scrat [10]2 years ago
5 0

Answer:

B. 12.5%

Step-by-step explanation:

Add all the hours together to get 20. We make the assumption that 20 is 100% since it is our output value. We next represent the value we seek with x. From step 1, it follows that 100%=20. In the same vein, x%=2.5.This gives us a pair of simple equations:

100%=20(1)

x%=2.5(2)

By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS  (left hand side) of both equations have the same unit (%); we have

\frac{100}{x}=\frac{20}{2.5}

Taking the inverse (or reciprocal) of both sides gives us this:

\frac{x}{100} =\frac{2.5}{20}

>> x=12.5\%  

Therefore, 2.5 is 12.5% of 20.

You might be interested in
The student council at Eleanor Roosevelt High School is taking a survey of student opinions on this year's homecoming theme. To
xeze [42]

Answer:

i  dont think so because it wont work effictianly

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
nine people are to be distributed among three committees of two, three, four members and a chairperson is to be selected for eac
Sonja [21]

b is the answer to your promblem

8 0
2 years ago
the scale of a model railroad set is 3.5 millimeters to one foot if the length of a model car in the set is 150 millimeters what
Montano1993 [528]

\bf \begin{array}{ccll} \stackrel{mm}{model}&\stackrel{ft}{actual}\\ \cline{1-2} 3.5&1\\ 150&x \end{array}\implies \cfrac{3.5}{150}=\cfrac{1}{x}\implies x=\cfrac{150\cdot 1}{3.5}\implies x\approx 42.86

6 0
3 years ago
Read 2 more answers
What value of B makes the expression. x² + Bx + 81 a perfect square trinomial?
Oxana [17]

Answer:

B.) 18

Step-by-step explanation:

To find the correct b value we use this formula

b² - 4ac = 0

b = What we are solving for

a = 1

c = 81

b² - 4(1)(81) = 0

b² - 324 = 0

b² = 324

b = \sqrt{324}

b = ±18

And 18 is one of the answer choices

So B.) 18 is the correct answer.

4 0
2 years ago
Read 2 more answers
24 students of 30 is what percent
____ [38]
The answer is 80 percent
5 0
2 years ago
Other questions:
  • Suppose that w and t vary inversely and that t=1/5 when w=4. write a function that models the inverse variation and find t when
    14·1 answer
  • A computer and printer cost a total of $1284. The cost of the computer is three times the cost of the printer. Find the cost of
    6·1 answer
  • Factor completely.
    15·1 answer
  • I NEED HELP PLEASE HURRY
    8·2 answers
  • Solve 15 = 2^(x+1).
    11·1 answer
  • In a class, 45 students are taking the SAT exam.The number of boys is 9 more than the number of girls.How many girls and boys ar
    7·1 answer
  • What kind of triangle has 105 degress?
    9·1 answer
  • Round 39.19 to the ones place
    9·2 answers
  • (1) Find values of x and y for which ABCD must be a parallelogram. The diagram is not to<br> scale.
    6·1 answer
  • Stuck on this question. Anyone mind helping me out? Urgent!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!