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
andriy [413]
3 years ago
6

Solve using substitution please help!!

Mathematics
1 answer:
mote1985 [20]3 years ago
5 0

I hope this helps you

You might be interested in
The perimeter of a square closet is 12 m. What is the cost of carpeting it at $7.00 per square meter
snow_lady [41]
Area= 12m * 12m = 144m^2 *7.00$ = 1008$.
Final answer: 1008$
5 0
3 years ago
Help me fill in the blanks<br><br> 6x + __ =3<br> (__ + 5)
Virty [35]

Answer:

<u>15</u>

<u>2x</u>

Step-by-step explanation:

4 0
3 years ago
The table below shows data for a class's mid-term and final exams:
lina2011 [118]
Mid term :
Q1 = (88 + 85)/2 = 86.5
Q2 = (92 + 95)/2 = 93.5
Q3 = 100
IQR = Q3 - Q1 = 100 - 86.5 = 13.5

final exams :
Q1 = (65 + 78)/2 = 71.5
Q2 = (88 + 82)/2 = 85
Q3 = (95 + 93)/2 = 94
IQR = Q3 - Q1 = 94 - 71.5 = 22.5

so the final exams has the largest IQR
 
5 0
3 years ago
Read 2 more answers
What’s is sherry error?
beks73 [17]

Answer:

the answer is B.

Step-by-step explanation:

It makes the problem solve smoother.

3 0
3 years ago
An electronic system has each of two different types of components in joint operation. Let X and Y denote the lengths of life, i
AURORKA [14]

Answer:

a

The average cost is E(C) = 66

b

The standard deviation of  cost is  \sigma  = 9.798

Step-by-step explanation:

From the question we are told that

          E(X) =  4

          E(Y) =  2

          E(X^2) =  24

           E(Y^2) =  8

The cost of replacing the two component is  C =  50 + 2 X + 4 Y

The variance   of X is mathematically represented as

           V(X) =  E(X^2) - [E(X)]^2

Substituting values  

              V[X] =  24 - 4^2

               V[X] =8

The variance  of Y is mathematically represented as

           V(Y) =  E(Y^2) - [E(Y)]^2

Substituting values  

              V[Y] =  8 - 2^2

               V[X] =4

The average of  replacing the two component is  

        E(C) =  2 * E(X)  + 4* E(Y)

substituting value

         E(C) =  50 + 2 * (4)  + 4* (2)

         E(C) = 66

The variance  of replacing the two component is  

        V(C) = V(50 + 2X +4Y)      Note: The variance of constant is zero

                                                                  and X and  Y are independent  

=>      V(C) =  2^2 * V(X) + 4^2 * V(Y)

substituting values

=>       V(C) =  4 * 8 +  16 * 4        

=>         V(C) =  32 + 64

=>         V(C) = 96

The standard deviation is

         \sigma  =  \sqrt{V(C)}  

substituting values

           \sigma  =  \sqrt{96}

           \sigma  = 9.798

6 0
3 years ago
Other questions:
  • Let f(x) = 5x + 4 and g(a) = a2 − 4a + 4 2 . Find the function value. g(−2)
    14·1 answer
  • if i picked 24 flowers. Put each group of 10 flowers into a vase. How many would be leftover to give to the teacher?
    13·1 answer
  • A man has 1020304 eggs some of the eggs were spoiled he divided remaining eggs equally among 348 people how many eggs were spoil
    14·1 answer
  • Chris bought six pounds of apples for
    5·2 answers
  • Identify whether the problem is a percent increase or a percent decrease. Your $1000 investment earned 5% interest.
    13·1 answer
  • Sarah and Noah work at read on bookstore and get paid the same hourly wage. The table shows their work schedule for last week.
    8·1 answer
  • If Y varies directly as x and y=15 when x=8, what is the value of Y when x=12. HURRY PLS
    5·1 answer
  • Josie read 40 pages of a book in 50 minutes. How many pages could she read in two hours?​
    15·2 answers
  • Only a couple more questions!! Help please
    5·1 answer
  • By rounding to 1 significant figure, estimate<br> 0.48 X 1594.3
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!