MATHEMATICS MIDDLE SCHOOL

Identify the quadratic function(s). (Select all that apply.)8-5x = 4(3x - 1)
(48 + 272a-1)+1=0.
1 2y + 2/3y - 5) = 0
2bb-7)+b=0

Answers

Answer 1
Answer:

For this case we have that by definition, a quadratic function is given by:f (x) =ax ^ 2+ bx + c

We evaluate the given equations:

Option A:

8-5x =4(3x-1)\n8-5x=12x-4\n8 + 4 = 12x + 5x

It is a linear equation!

Option B:

(48 + 271a-1)+1 = 0\n48 + 271a-1+1 = 0\n48 + 271a = 0

It is a linear equation!

Option C:

12y + \frac {2} {3} y-5 = 0\n\frac {36y + 2y} {3} = 5\n36y + 2y = 15\n

It is a linear equation!

Option D:

(2b * b-7) +b = 0\n2b ^ 2-7 + b = 0\n2b ^ 2 + b-7 = 0

It is a quadratic equation!

ANswer:

Option D

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Which expression means 63?A)
6 × 3


B)
6 × 6 × 6


C)
3 × 3 × 3 × 3 × 3 × 3


D)
(2 × 3) × (2 × 3) × (2 × 3)

Answers

A) 6 x 3 = 18

B) 6 x 6 x 6 = 6^3 = 216

C) 3 x 3 x 3 x 3 x 3 x 3 = 3^6 = 729

D) (3 x 2) x (3 x 2) x (3 x 2) = 6 x 6 x 6 = 216

None of these equal to 63.
There are no correct answers because

A=18
B=216
C=729
D=216

So no answers are correct because none equal 63.

In a recent golf match,Becky’s score was 5 less than Cathy’s score their combined score totaled 185 let b represent Becky’s score and c represent Cathy’s score which pair equation can be used to determine their scores

Answers

It says that b represents Becky’s score and c represents Cathy’s score.

Becky’s score was 5 less than Cathy’s score, its equation can be written as :-

b = c - 5

It says that their combined score totaled 185, its equation can be written as :-

b + c = 185

So, correct pair of equations is b = c - 5 and b + c = 185.

If Becky’s score was 5 less than Cathy’s, then we would write:

b = c - 5

If Becky’s and Cathy’s scores add up to 185, then we would write:

b + c = 185

These are the two equations:

b = c - 5

b + c = 185

What is the perimeter of the figure to the nearest tenth of a millimeter?



A.
9.4 millimeters

B.
12.0 millimeters

C.
21.4 millimeters

D.
30.8 millimeters

Answers

We have to calculate the perimeter of the figure to the nearest tenth of a millimeter. This figure is made of a rectangle and a half of a circle. The first figure has the perimeter: 3 + 6 + 3 = 12 mm. The second figure has the perimeter: 2 * Pi * r / 2 = Pi * r ; and the radius : r = 6/2 = 3 mm. So Pi * 3 = 3.14 * 3 = 9.42. Fimally : 12 + 9.42 = 21.42 or 21.4 to the nearest tenth. Answer: C. 21.4 millimeters.

How can i divide 3 divided by 681

Answers

3/681
=1/227
20 charrr

An employees initial annual salary is $50,000 per year and the company gives $1,000 raises each year. The annual salary needed to live in the city was $45,000 when he started his job but is increasing 5% each year.Create an equation that models the annual salary in a given year.
Create an equation that models the annual salary needed to live in the city in a given year.

Answers

Answer:

S = 50000 + 1000Y

S= 45000[1+(5)/(100) ]^(Y)

Step-by-step explanation:

The initial annual salary of an employee is $50000 per year and the company gives $1000 raises each year.

So, the equation that models the annual salary is given by  

S = 50000 + 1000Y

Where S is the yearly salary and Y is the number of years.

Again, the annual salary needed to live in the city is $45000 when one starts his job and is increasing 5% each year.

So, the equation that models the annual salary is given by

S= 45000[1+(5)/(100) ]^(Y)

Where S is the annual salary and Y is the number of years.

(Answer)  

There are 150 members in the school marching band. the band wants to raise $30,000 for a trip to a national competition. the school agreed to contribute $10,000 towards the trip. which inequality shows the amount of money that each band member should raise?A) 150x + 30,000 > 10,000
B) 150x + 10,000 > 30,000
C) 10,000x + 150 > 30,000
D) 10,000x + 30,000 > 150

Answers

The answer is B, $10,000 is given and is not a variable that can be changed, since there are 150 band students raising money it would be 150x, and the 30,000 is the goal of the fundraiser
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