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
Tanzania [10]
3 years ago
15

Can someone please explain the steps to solve these questions.

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
3 0
Alright! So to solve these questions, you need to find out the difference. You can use ratios to solve this. For example, question #25:

A class had 30 pupils at the beginning of this school term, but now has 5 more pupils. What is the percent of increase?

The question is basically asking how much 5 is in ratio to 30. So just divide 5 (the given amount) by 30 (the total amount). The answer is 0.16, or 16%
You might be interested in
Find the average rate of change of f(x)=2x^2-7x from x=2 to x=6
scoundrel [369]

Answer:

Step-by-step explanation:

The average rate of change of a function f between a and b (a< b) is :

R =[f(b)-f(a)] ÷ (a-b)

●●●●●●●●●●●●●●●●●●●●●●●●

Let R be the average rate of change of this function

f(6) = 2×6^2 - 7×6 = 72-42 = 30

f(2) = 2×2^2 - 7×2 = 8-14 = -6

R = [f(6) - f(2)]÷ (6-2)

R = [30-(-6)] ÷ 4

R = -36/4

R = -9

■■■■■■■■■■■■■■■■■■■■■■■■■

The average rate of change of this function is -9

8 0
3 years ago
Read 2 more answers
he books in a private library are classified as fiction and nonfiction. There are 400 books in the library. There are 40 more fi
vfiekz [6]
First, you have to set a system of equations to determine the number of fiction and of nonfiction books.Call f the number of fiction books and n the number of nonfiction books. Then 400 = f + n. And f = n + 40 => n = f - 40 => 400 = f + f - 40 => 400 - 40 = 2f => f = 360 / 2 = 180. Now to find the probability of picking two fiction books, take into account the the Audrey will pick from 180 fiction books out of 400, and Ryan will pick from 179 fiction books out of 399, so the probability will be<span> (180/ 400) * (179/399) = 0.20 (rounded to two decimals). Answer: 0.20</span>
3 0
3 years ago
Solve 12^2+5x-4 =12^2x+6
torisob [31]

answer I got was x=6/139 or x=-0.0431655

7 0
3 years ago
The table below shows the outputs y for different inputs x:
Bond [772]
A.    this is not a function because x=1 has 2 outputs So does x=3

B . f(120) = 20 + 10*120 = 1220

This is the cost in dollars of renting a boat for 120 hours.


7 0
3 years ago
(100 POINTS) Question 2: 6 pts
vfiekz [6]

Answer:

1 and -3

Step-by-step explanation:

The zeros of a quadratic function are the points on the graph where the curve intercepts the x-axis (where y = 0).

From inspection of the attached graph, we can see that the curve intercepts the x-axis at x = -3 and x = 1.

6 0
2 years ago
Read 2 more answers
Other questions:
  • What is the solution to the inequality -4x+3&lt;31
    9·2 answers
  • Hey can you please help me posted picture of question
    12·1 answer
  • How do you do factor x²-49?
    10·1 answer
  • oleg ran 8.8 miles in 1 hour 20 minutes. assuming he continues at a constant rate, how long will it take him to run any number o
    12·2 answers
  • ANSWER PLS ASAP
    14·2 answers
  • Estimat the product of 32*36
    14·1 answer
  • Write a number of grams between 10 and 20, and then write an equivalent amount in milligrams.
    5·1 answer
  • To find the quotient of 3 divided by 1/6 multiply 3 by what
    10·1 answer
  • Simplify the following equation:
    13·1 answer
  • A. Kim pays $90 for every block of 5 dance classes. What rate can you write to represent this block of classes
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!