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
Sunny_sXe [5.5K]
3 years ago
10

Explain your answer !! Have a nice day Will give braisnlt

Mathematics
1 answer:
pashok25 [27]3 years ago
5 0

Answer:

3x+2y=15--------(1)

4x+2y=20--------(2)

then, 2y=15-3x------(3)

putting value of 2y in equation (2)

4x+15-3x=20

x=5

then after , putting value of x in eq(3)

y=(15-15)/2

y=0

You might be interested in
I need help with this problem.
liberstina [14]
4050 divided by 3 = 1350
There is 4050 people in an arena and there is 3 sections of seats. How many people are in one section of seats?
6 0
3 years ago
The screening process for detecting a rare disease is not perfect. Researchers have developed a blood test that is considered fa
lesya692 [45]

Answer:

Type I: 1.9%, Type II: 1.6%

Step-by-step explanation:

given null hypothesis

H0=the individual has not taken steroids.

type 1 error-falsely rejecting the null hypothesis

⇒   actually the null hypothesis is true⇒the individual has not taken steroids.

 but we rejected it ⇒our prediction is the individual has taken steroids.

typr II error- not rejecting null hypothesis when it has to be rejected

⇒actually null hypothesis is false ⇒the individual has taken steroids.

but we didnt reject⇒the individual has not taken steroids.

let us denote

the individual has taken steroids by 1

the individual has not  taken steroids.by 0

                            predicted

                              1       0

   actual          1    98.4%  1.6%

                        0   1.9%   98.1%

so for type 1 error  

 actual-0

predicted-1

therefore from above table we can see that probability of Type I error is 1.9%=0.019

so for type II error

   actual-1

predicted-0

therefore from above table we can see that probability of Type I error is 1.6%=0.016

5 0
3 years ago
What is the simplified form of the following expression?<br>  
ra1l [238]
(4/7)^3=.1865

6xyz/2xz simplifies to 3y
6 0
3 years ago
Read 2 more answers
Find the derivative of<br> <img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%20%5Cfrac%7B6%7D%7Bx%7D%20" id="TexFormula1" titl
aev [14]
f'(x_0)=\lim\limits_{h\to0}\dfrac{f(x_0+h)-f(h)}{h}=\lim\limits_{x\to x_0}\dfrac{f(x)-f(x_0)}{x-x_0}\\\\f(x)=\dfrac{6}{x};\ x_0=2\\\\subtitute\\\\f'(2)=\lim\limits_{x\to2}\dfrac{\frac{6}{x}-\frac{6}{2}}{x-2}=\lim\limits_{x\to2}\dfrac{\frac{6}{x}-3}{x-2}=\lim\limits_{x\to2}\dfrac{\frac{6-3x}{x}}{x-2}=\lim\limits_{x\to 2}\dfrac{6-3x}{x(x-2)}\\\\=\lim\limits_{x\to2}\dfrac{-3(x-2)}{x(x-2)}=\lim\limits_{x\to2}\dfrac{-3}{x}=-\dfrac{3}{2}=-1.5\\\\\\An swer:\boxed{f'(2)=-1.5}
8 0
3 years ago
2x+2y=16 , 6x+4y=38 what is the value of x
ra1l [238]
1st equation—x, substitute y: 
<span>3x + 2(x + 3) = 16 </span>
<span>3x + 2x + 6 = 16 </span>
<span>5x = 10 </span>
<span>x = 2 </span>

<span>y in the above equation: </span>
<span>= 2 + 3 </span>
<span>= 5 </span>

<span>Answer: x = 2, y = 5</span>
5 0
3 years ago
Other questions:
  • Select all the correct answers.
    8·1 answer
  • I need help please.
    12·1 answer
  • FIST PERSON WHO ANSWERS THIS RECEIVES 30 POINTS!!
    10·2 answers
  • A tiling company completes two jobs. The first job has $1200 in labor expenses for 40 hours worked, while the second job has $15
    6·2 answers
  • PLEASE HELP ASAP!
    13·1 answer
  • Which of these best describes the Pythagorean theorem?
    15·1 answer
  • Hi :)
    12·1 answer
  • Conic Sections - Part 1
    7·1 answer
  • Multiply.<br><br> (−2.04)(4.3)<br><br> PLEASE HURRY
    5·1 answer
  • What answers is. I don’t know
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!