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
Nina [5.8K]
3 years ago
10

Please help!!!!!!!!!!​

Mathematics
2 answers:
a_sh-v [17]3 years ago
6 0

Answer:

The average amount Mrs. Johnson spent per week is 70 dollars.

Step-by-step explanation:

47+96+78+61+68/5 = 350/5 = 70

Minchanka [31]3 years ago
4 0

Answer:

The overall average is 70 dollars for all weeks together

You might be interested in
Anyone I need help whit this question
zepelin [54]

Answer: 94.3 meters

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What are the primary colors?
lawyer [7]
Red, yellow, and blue.
6 0
3 years ago
Read 2 more answers
1. What is the solution of the system?
andreyandreev [35.5K]

Answer:

The given system of equations has solutions below:

1) The solution is (2,3)

2) The solution is (\frac{-8}{7}, \frac{5}{7})

3) The solution is infinitely many solutions

4) No solution

Step-by-step explanation:

Given system of equation are

-x+2y=4\hfill (1)

-4x+y=-5\hfill (2)

To solve equation by using elimination method

Multiply eqn (2) into 2

-8x+2y=-10\hfill (3)

Now subtracting (1) and (3)

-x+2y=4

-8x+2y=-10

_________________

7x=14

x=\frac{14}{7}

x=2

Substitute x=2 in equation (1)

-2+2y=4

2y=4+2

y=\frac{6}{2}

y=3

Therefore the solution is (2,3)

2) Given equation is

-2x+y=3\hfill (1)

4y-4=x

Rewritting as below

x-4y=-4\hfill (2)

To solve equation by using elimination method

multiply (2) into 2

2x-8y=-8\hfill (3)

Adding (1) and (3)

-2x+y=3

2x-8y=-8

________

-7y=-5

y=\frac{5}{7}

substitute y=\frac{5}{7} in (1)

-2x+\frac{5}{7}=3

-2x=3-\frac{5}{7}

-2x=\frac{21-5}{7}

x=-\frac{8}{7}

Therefore the solution is (\frac{-8}{7},\frac{5}{7})

3) Given equation is 6x+2y=10\hfill (1)

3x+y=5\hfill (2)

equation (1) can be written as

2(3x+y)=10

3x+y=\frac{10}{2}

3x+y=5

Therefore equations (1) and (2) are same therefore it has infinitely many solutions

4) Given equation is -x-2y=14\hfill (1)

-2x-4y=12\hfill (2)

multiply equation (1) into 2

-2x-4y=28\hfill (3)

To solve equation by using elimination method

subtracting (2) and (3)

-2x-4y=28

-2x-4y=12

_______

28\neq -12

therefore it has no solution

4 0
3 years ago
Help. What’s the answer to this problem?
liq [111]

Answer:

C) Yes, it’s a reflection over line f.

Step-by-step explanation:

It’s a reflection over line f.

3 0
2 years ago
The dot plot below shows how many laps each student in Coach Toni's gym class ran one day.
Marysya12 [62]
\underbrace{5;5;5;5;10;10;15;15;20;35}_{10}\\\\5\cdot4+10\cdot2+15\cdot2+20+35=125\\\\\frac{125}{10}=12.5\leftarrow\boxed{B}
5 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me , algebra math !!
    5·1 answer
  • What is the determinant of an elementary row replacement matrix?
    14·1 answer
  • Simplify 6x + 6 + 5x - 8.​
    14·2 answers
  • An ice cream store sells
    11·1 answer
  • Find the derivative of f(x) = e^x^2
    14·1 answer
  • Simplify 16-3(8-3)^2÷5
    15·2 answers
  • Plz help <br> what is the range of the data set?
    14·1 answer
  • A charity received 240 donations. The total amount received was 7,680. If x represents the average donation, which THREE stateme
    14·1 answer
  • Please answer I've got 10 mins
    5·1 answer
  • If angle hfg =130 and angle egg =70 what is angle Abe
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!