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
andrew-mc [135]
3 years ago
8

CAN SOMEONE PLEASE HELP WITH THIS IT I URGENT

Mathematics
1 answer:
olga_2 [115]3 years ago
4 0

Answer:

Step-by-step explanation:

9+7+2=18

But since there are only 12 people in the class, its overlapping. So 18-2(the people that have nether), is 16.

So 16-12 is 4. Therefore 4 people have both a brother and a sister.

You might be interested in
What are the steps to solve √(0.2)^(−2)?<br><br>(The answer is 5)
Nimfa-mama [501]

\bf 0.\underline{2}\implies \cfrac{02}{1\underline{0}}\implies \stackrel{simplified}{\cfrac{1}{5}} \\\\[-0.35em] ~\dotfill\\\\ \left( \sqrt{0.2} \right)^{-2}\implies \left( \sqrt{\cfrac{1}{5}}\right)^{-2}\implies \left( \sqrt{\cfrac{5}{1}}\right)^{+2}\implies \cfrac{(\sqrt{5})^2}{(\sqrt{1})^2}\implies \cfrac{\sqrt{5^2}}{\sqrt{1^2}}\implies 5

6 0
3 years ago
Carmen is writing an article for a magazine. She will be paid a fee and also will be paid for each word that is published. The t
enot [183]

Answer:

The inverse function of f(x)=2.5*x+150 is f⁻¹(x)=\frac{2}{5}x-60

Step-by-step explanation:

An inverse or reciprocal function of f (x) is called another function f ⁻¹(x) that fulfills that:

If f(a)=b then f⁻¹(b)=a

That is, inverse functions are functions that do the "opposite" of each other. For example, if the function f (x) converts a to b, then the inverse must convert b to a.

To construct or calculate the inverse function of any function, you must  follow the steps below:

Since f (x) or y is a function that depends on x, the variable x is solved as a function of the variable y. And since inverse functions swap the input and output values ​​(that is, if f (x) = y then f⁻¹(y) = x), then the variables are swapped and write the inverse as a function.

You know that he function f(x) = 2.5*x + 150 or y=2.5*x +150

Solving for x:

2.5*x +150=y

2.5*x= y-150

x=\frac{y-150}{2.5}

x=\frac{y}{2.5}-\frac{150}{2.5}

x=0.4y-60=\frac{2}{5}y-60

Exchanging the variable, you obtain that <u><em>the inverse function of f(x)=2.5*x+150 is f⁻¹(x)=</em></u>\frac{2}{5}x-60<u><em></em></u>

7 0
3 years ago
CAN SOMONE PLS HEP WITH THIS!!!! ASAP FOR BRAINLIEST
quester [9]

Answer: How can I help?

Step-by-step explanation:

6 0
3 years ago
Please help ASAP !!!!!
zloy xaker [14]

Answer:

i need points im really sorry

Step-by-step explanation:

7 0
3 years ago
What is the area of a sector of a circle with a radius of 2.0 ft and a central angle of 2<img src="https://tex.z-dn.net/?f=%20%5
Zigmanuir [339]
\bf \qquad \textit{area of a sector of a circle}&#10;\\\\&#10;A=\cfrac{\theta r^2}{2}\qquad &#10;\begin{cases}&#10;\theta=\textit{angle in radians}\\&#10;r=radius&#10;\end{cases}

plug in the provided radius and angle
6 0
3 years ago
Other questions:
  • Find the value of x (5x)=150
    7·1 answer
  • A ray is a defined term because ?
    12·1 answer
  • Real world problem whose sum is 1 3/5
    9·2 answers
  • What is the value of X 56•
    8·1 answer
  • Right triangle ACB has side lengths c = 17 inches and a = 8 inches
    9·1 answer
  • Please explain how I can find these answers, we just went over this in class and I don't get it
    12·1 answer
  • A chicken’s mass at birth is 0.40 kilograms. The chicken gains approximately .44 kilograms each week. After how many weeks is th
    5·1 answer
  • How many​ flowers, spaced every 3 ​in., are needed to surround a circular garden with a 125 ​-ft ​radius? Use 3.14 for (the pie
    10·1 answer
  • Put the following equation of a line into slope-intercept form, simplifying all
    10·1 answer
  • The first steps in writing f(x) = 3x2 – 24x 10 in vertex form are shown. f(x) = 3(x2 – 8x) 10 (startfraction negative 8 over 2 e
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!