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
morpeh [17]
3 years ago
14

Please give an explanation on how you got this answerI'm not sure if it's too late or what, but I can't get it.

Mathematics
1 answer:
Alona [7]3 years ago
8 0
Step 1: multiple the second equation by 2 so that you get -1/4 for the coefficient of y, the same as in equation 1
equation 2 multiply by 2: 1/4 x - 1/4 y=38  ..........name this equation 3
subtract equation 1 from equation 3: (1/4 x -1/2 x)=38-10
-1/4 x = 28
x=-112
plug in x=-112 in any of the equation, you will get y=-264
so the answer is A
You might be interested in
4(x+4) =2x-1<br> 8<br><br><br><br> Show work
Ierofanga [76]

Answer:

4(x+4) =2x-18

4x+16=2x‐18

4x–2x= –18 –16

2x= – 34

x= –34/2

x= – 17

I hope I helped you^_^

3 0
3 years ago
Read 2 more answers
F(5)=3x+2 <br> What is the solution
Nady [450]

Answer:

f=3/5x+2/5c

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Between which two integers does the square root of 117 lie
Trava [24]

Answer: 10 and 11 or -11 and -10

6 0
2 years ago
Read 2 more answers
Find the slope Show me
inn [45]

Answer:

the slope is

  -3/2

4 0
3 years ago
Read 2 more answers
Set of data has a normal distribution with a mean of 56 and a standard deviation of 7. Find the percent of data within the follo
makvit [3.9K]

Answer:

.99815

which is about

99.815%

Step-by-step explanation:

we are looking for 35<x<77

We need to find (what I think is called) the z score which is acheieved through what I'm pretty sure is called standardizing

What we do is subtract the mean and then divide by the standard deviation

so for 35 we have

(35-56)/7= -3.29

due to the fact that the normal distribution is symmetric this is equal to 1-p(3.29)

to find p(3.29) grab a ztable and get p(3.29)= .9995

1-.9995= .0005

For 77 we have

(77-56)/7=3

grab a ztable and find the 3= .99865

Finally subtract these two to get the final answer

.99865-.0005= .99815

7 0
3 years ago
Other questions:
  • In a sale there is 30% off a pair of jeans. The sale price is £56. What was the price before the sale ?
    10·1 answer
  • 21:56 what is the ratio equivalent
    14·1 answer
  • Y-17= -37 what is the answer
    13·2 answers
  • Solve the system by graphing... 2x-y= -5 x-y=0
    8·1 answer
  • Need help with this please
    9·1 answer
  • Original price is $29.99 markdown is 33 1/3%
    8·1 answer
  • Type the missing number in this sequence: 1, 2, 4, 8,​
    7·1 answer
  • What are 2 possible values for x where x ≥ 6?
    14·1 answer
  • 8. (13 96)- - (15-03) + (18-09) -32-65= ?<br>(a) 223<br>264<br>(c) 334​
    12·1 answer
  • Trigonometry<br><br> cos62 x 12
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!