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
PolarNik [594]
3 years ago
13

Simplify.

Mathematics
1 answer:
DIA [1.3K]3 years ago
8 0
Hey, do you need to simplify all of them?
You might be interested in
What value of x will make this proportion true?
grandymaker [24]

is there a picture or equation that you can provide ?

5 0
3 years ago
In 1950 the number of retirees was approximately 150 per thousand people aged 20-64. In 1990 this number rose to approximately 2
serg [7]

Answer: 233 people per thousand

Step-by-step explanation:

Using extrapolation method,

if 150/k in 1950,

  200/k in 1990,

  275/k in 2020,

2003 lies in between 1990 and 2020. So, you extrapolate the values of 200/k and 275/k for the years respectively.

Therefore,  

(2003 - 1990)/(2020 - 2003) = (x - 200)/(275 - x)

Where x is the number of retirees per thousand for 2003

Making x the subject of relation in the above equation.

Cross multiply the equation above;

(2003 - 1990)(275-x) = (2020 - 2003)(x - 200)

13(275 - x) = 17(x-200)

3575 - 13x = 17x - 3400

Collect the like terms

3575+3400 = 17x + 13x

30x = 6975

x = 6975/30

x = 232.5

x = 233 people per thousand to the nearest integer

6 0
3 years ago
What are the solutions to the quadratic equation below?<br> 4x^2 + 28x + 49 = 5
bezimeni [28]

Answer:

C

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Solve the system of equations:
Ahat [919]

Answer:

Step-by-step explanation:

z = 3

2y + z = 1

2y + 3 = 1        {substituting z =3}

2y = 1 -3

2y = -2

y = - 2/2

y = -1

2x +3y +2z = 13

2x + 3 * (-1) + 2*3 = 13      { {substituting z =3} and y = -1}

2x -3 + 6 =13

2x + 3 = 13

2x  = 13 - 3

2x= 10

x = 10/2

x = 5

8 0
3 years ago
Given the equation f(x) = 2x² + 4x - 1, what is axis of symmetry? a. 1 c. -1 b. 2 d. 0
Irina-Kira [14]

Answer: x=-1

Step-by-step explanation:

the x value of the vertex = -b/2a if the equation is in "ax^2+bx+c" for

you are in luck

x value of the vertex = -4/4 = -1

the line of symmetry is a vertical line, and since it must pass through the vertex

line of symmetry: x=-1

4 0
3 years ago
Other questions:
  • There are blue, red and green pencils in the box—20 pencils total. There are 6 times more green pencils than blue pencils. There
    15·1 answer
  • A manufacturer plans to introduce a new type of shirt based on the following information. The selling price is $57.00; variable
    10·1 answer
  • How do you find x in y=4x+6
    14·1 answer
  • Which of the following are the zeroes of the function y = 3 ( x − a )( x + b )y = 3 ( x - a )( x + b ) in terms of a a and bb ?
    12·2 answers
  • How do I solve this math problem 5/6n=10​
    14·2 answers
  • You have budgeted $200.00 for 3 of your bills each month. With the following information, how much did you allow for new clothes
    9·1 answer
  • 100 feet square of canvas at $1.19 per square foot
    11·1 answer
  • How do you solve this someone help please
    15·1 answer
  • In the evening, the golf course discounts a round of golf by 35%. What percent of the normal price do you pay if you play in the
    13·1 answer
  • Please help this is due today!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!