MATHEMATICS MIDDLE SCHOOL

What is two plus two

Answers

Answer 1

Answer:

well .... 2 + 2 = 4

Answer 2

Answer:

two plus two is equal to four

Answer:

The center of the rail rise above the ground is:

15 meter.

Step-by-step explanation:

As the railroad on expansion will form a right isosceles triangle.

The railroad is 3 km=3000 m before expansion.

It expanded by 15 cm.

This means that in meters it expanded by 0.15 m

Hence, the railroad after expansion it is: 3000.15 m

Now we need to calculate the hypotenuse of the right triangle in order to find the center of the rail rise above the ground.

and hence it is calculated as:

$=(1)/(2)* √((3000.15)^2-(3000)^2)\n\n\n=(1)/(2)* 30.000374977=15.000187$

which in meters is approximately given by:

15 meters.

3km =m 3 x 1000m = 3 x 10 ^3m

expansion = 3x 10^3m + 15 x 10 cm

Which statement best explains the value of 17 − (−3)?a. The additive inverse of −3 is −3, so 17 − (−3) = 20.
b.The additive inverse of −3 is +3, so 17 − (−3) = 20.
c.The additive inverse of −3 is −3, so 17 − (−3) = 14.
d. The additive inverse of −3 is +3, so 17 − (−3) = 14.

Answers

The answer to the question would be

B. The additive inverse of-3 is +3, so 17-(-3)=20 That's because if you do KCC (Keep Change Change )then you would get 17+3 add 3+17=20 that's easy

Answer: 20

Step-by-step explanation: -3 is +3, so 17- (-3) = 20

Select all of the following that are quadratic functions. x = 3y2 – 6y + 5, y + 3 = –2 x 2+ 5 , y = 2 x 2 – 8 x + 6, y= –7 x – 4, y – 3 x = 4 x 3 – x2 + 9, y = 5 x(x + 9) – 8, y – 2 x 2 = 3 x – 2 x 2 + 4

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The standard form is ax² + bx + c = 0 with a, b, and c being constants, or numerical coefficients, and x is an unknown variable and if the highest power in the quation is 2 then it is a quadratic equation.

$x = 3y^(2)-6y + 5$ ----> Quadratic Equation

y +3 = -2x² +5----> Quadratic Equation

$y = 2 x^(2) - 8x + 6$ ----> Quadratic Equation

$y = -7x - 4$ ----> Non Quadratic Equation

$y - 3 x = 4 x^(3) - x^(2) + 9$ ----> Non Quadratic Equation

y = 5 x(x + 9) - 8----> Quadratic Equation

$y - 2x^(2) = 3 x - 2 x^(2) + 4$ ----> Quadratic Equation

Answer:

2. y + 3 = -2x^2 + 5

3. y = 2x^2 - 8x + 6

6. y = 5x (x+9) - 8

Mrs. Hamilton worked for a real estate agency. She sold a house for $175,000. The agency's fee for the sale was 4% of the sale price. Mrs. Hamilton received $4,725 of the agency's fee as her commission. What percent of the agency's fee did Mrs. Hamilton receive?

Answers

Mrs Hamilton received 67.5% of the agency fee made from selling the $175000 house

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

The house was sold for $175,000. The agency's fee for the sale was 4% of the sale price.

Agency = 4% of 175000 = $7000

Mrs. Hamilton received $4,725. Hence:

Percentage = (4725/7000) * 100% = 67.5%

Mrs Hamilton received 67.5% of the agency fee made from selling the $175000 house

Find out more on equation at: brainly.com/question/2972832

67.5%

First you have to figure out what the agency received as a whole:
175,000 x .04 = 7000
Then you have to figure out what percentage Mrs. Hamilton received from the agency
$(4725)/(7000)=.675$
.675 as a percentage is equal to 67.5%!
I hope this helped!

Line A has a slope of 4. Line B has a slope of 1/4.

Answers

The correct answer is actually (a) because rate of change is x/y (or that's how I learned it) then the more big the slope the bigger the rate of change

Line A is correct because the rule is rise over run and since the rise is 4 and run 1, the answer is 4.

Write an equation of the line that is:a) parallel to the line y=2x-4, and has a y-intercept of 7
   b) parallel to the line y-3x=6, and has a y-intercept of -2
   c) parallel to the line 2x+3y=12, and that passes through the origin
   d) perpendicular to the line y=3x+2, and has a y-intercept of 2
   e) perpendicular to the line 3y+4x=18, and that passes through the origin

   please answer all these question

Answers

Lines that are parallel will have the same slope. Lines that are perpendicular will have slopes that are the negative reciprocal of each other.

(a) parallel to the line y=2x-4, and has a y-intercept of 7
slope of first line: 2
slope of second line: 2
y=mx + b
y=2x+7

(b) parallel to the line y-3x=6, and has a y-intercept of -2
y=3x+6
slope of first line: 3
slope of second line: 3
y=mx + b
y=3x-2

(c) parallel to the line 2x+3y=12, and that passes through the origin
3y=-2x+12
y=-2/3x+4
slope of first line: -2/3
slope of second line: -2/3
origin: (0,0)
y=mx + b
y=-2/3x + 0
y=-2/3x

(d) perpendicular to the line y=3x+2, and has a y-intercept of 2
slope of first line: 3
slope of second line: -1/3
y=mx + b
y=-1/3x + 2

(e) perpendicular to the line 3y+4x=18, and that passes through the origin
3y=4x+18
y=4/3x+6
slope of first line: 4/3
slope of second line: -3/4
origin: (0,0)
y=mx + b
y=-3/4x + 0
y=-3/4x

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What is two plus two

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What is an equation?

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