what is math and who invented math

Answer:

14 quizzes

Step-by-step explanation:

Jill takes 6 quizzes every 3 weeks.

the unit rate is 3 quizzes every week, because 6 divided by 3 equals 2

now, take the number of quizzes per week and multiply it by 7

(2 x 7) = 14

So, Jill would take 14 quizzes in 7 weeks.

Answer:

10

Step-by-step explanation:

Answer:

it's 100

Step-by-step explanation:

just divide 50,000 by 500 and you'll get 100 so 50000 Is 100 times as 500

Answer:

E. a=10.

it's the answer

hope it helps

Answer:

DO NOT CHEAT

Step-by-step explanation:

IT'S HARAM >:(

Answer:

Below!

Step-by-step explanation:

So keeping track from what we understand,

Problem:

-4.7 + 17.4 - 8.9 - 15.3 = A

↓

-12.7 - 24.2 = A

↓

A = -11.5!!

Answer:

2x(x-1)

Step-by-step explanation:

-6x+2-(-2x^2-4x+2)

-6x+2+2x^2+4x-2

2x^2-6x+4x+2-2

2x^2-2x

2x(x-1)

Answer:

2x² - 2x

Step-by-step explanation:

- 6x + 2 - (- 2x² - 4x + 2) ← distribute parenthesis by - 1

= - 6x + 2 + 2x² + 4x - 2 ← collect like terms

= 2x² - 2x

Answer:

The answer is B

Step-by-step explanation:

Answer:

rational numbers and real numbers

Step-by-step explanation:

Answer:

11. 10, 20,30,40,50,60,70

12. 35, 45,55,65,75,85,95

Step-by-step explanation:

10 dollars per week for 7 weeks in equivalent to 10x7 which equals $70.

If you already had $25 you would do 10x7+25. Using PEMDAS you would multiply first (10x7=70) then add 25 (70+25=95)

Answer:

y = 0

Step-by-step explanation:

To find the slope, we have to plug the values into the slope-intercept formula.

y2 - y1 / x2 - x1

0 - 0 / 4 - (-10)

0 / 14

= 0

Answer:

Hello! Your answer is BELOW

Step-by-step explanation:

The best answer to the question that is being stated above would be letter B. The graph of a function never has two different points with the same x-coordinate because the input value of each of the points is mapped to a single output value in the graph.  

Hope I helped! Hope you make an 100%

-Amelia♥

Answer:

[tex]y = \frac{3}{5} x + \frac{49}{5} [/tex]

Step-by-step explanation:

slope = -5/3

Perpendicular slopes must be opposite reciprocals of each other:  m1 * m2 = –1

With the new slope, use the slope intercept form and the point to calculate the intercept: y = mx + b

the new slope = 3/5

y = 3/5 x + b

8 = -9/5 +b

b = 40/5 + 9/5 = 49/5

y=3/5x + 49/5

Answer:

0.5 is correct answer hope it helps

Answer:

7.5 years because United States has mor thne 9 years

Answer:

ABD=26°.

SEE THE IMAGE FOR SOLUTION

Answer:

38

Step-by-step explanation:

4 × 5 + [14 + 8] - 36 ÷ 9

4 × 5 + 22 - 36 ÷ 9

4 × 5 + 22 - 4

20 + 22 - 4

42 - 4

38

Step-by-step explanation:

use pemdas

P= parenthesis

E= exponents

M= multiply

D= divide

A= addition

S= subtraction

Answer:

(x) = -x/4+2

Step-by-step explanation:

Inverse the function, so swap the places of x and y

x = -4y + 8

Then solve for y

x - 8 = -4y

-x/4 + 2 = y

y = -x/4 + 2

g(x) = -x/4+2

Answer:

83 i think

Step-by-step explanation:

sorry if its wrong

Answer:

B

Step-by-step explanation:

x and 83 are same- side interior angles and sum to 180° , then

x + 83° = 180° ( subtract 83° from both sides )

x = 97° → B

Answer:

[tex]2 + 34 - 18 + 2- 5 + 100 - 49 \\ = 36 - 16 + 95 - 49 \\ = 20 + 95 - 49 \\ = 115 - 49 \\ = 66 \\ thank \: you[/tex]

Answer:

The answer is 66.

Step-by-step explanation:

→ 2 + 34 - 18 + 2 - 5 + 100 - 49

→ (2 + 34 - 18 + 2 - 5) + (100 - 49)

→ 15 + 51 = 66

Thus, 66 is the solution.

Answer:

$159.09

Step-by-step explanation:

Math

Answer:

I)

[tex]\displaystyle A + B + C = 2x^2 + 4xy + 2[/tex]

II)

[tex]\displaystyle A - B + C = 6x^2 -8xy[/tex]

III)

[tex]\displaystyle A + B - C= -4x^2 + 10xy -12[/tex]

Step-by-step explanation:

We are given the three equations:

[tex]\displaystyle A = x^2 + xy -6,\, B = 6xy - 2x^2 +1 \text{ and } C = 3x^2 + 7 -3xy[/tex]

I)

We want to find:

[tex]\displaystyle A + B + C[/tex]

Substitute:

[tex]\displaystyle = (x^2 + xy - 6) + (6xy -2x^2 + 1) + (3x^2 + 7 -3xy)[/tex]

Rewrite:

[tex]\displaystyle = (x^2 + 3x^2 - 2x^2) + (xy + 6xy - 3xy) + (-6 + 1 + 7)[/tex]

And combine like terms. Hence:

[tex]\displaystyle A + B + C = 2x^2 + 4xy + 2[/tex]

II)

We want to find:

[tex]\displaystyle A - B + C[/tex]

Likewise, substitute:

[tex]\displaystyle = (x^2 + xy - 6) - (6xy - 2x^2 + 1) + (3x^2 + 7 - 3xy)[/tex]

Distribute:

[tex]\displaystyle = (x^2 + xy - 6) + (-6xy +2x^2 - 1) + (3x^2 + 7 - 3xy)[/tex]

Rewrite:

[tex]\displaystyle = (x^2 + 2x^2 +3x^2) + (xy - 6xy -3xy) + (-6 -1 + 7 )[/tex]

And combine like terms. Hence:

[tex]\displaystyle A - B + C = 6x^2 -8xy[/tex]

III)

We want to find:

[tex]\displaystyle A + B - C[/tex]

Substitute:

[tex]\displaystyle = (x^2 + xy - 6) + (6xy - 2x^2 + 1) - (3x^2 + 7 - 3xy)[/tex]

Distribute:

[tex]\displaystyle = (x^2 + xy - 6) + (6xy - 2x^2 + 1) + (-3x^2 - 7 + 3xy)[/tex]

Rewrite:

[tex]\displaystyle = (x^2 - 2x^2 - 3x^2) + (xy +6xy +3xy) + (-6 +1 - 7)[/tex]

And combine like terms. Hence:

[tex]\displaystyle A + B - C= -4x^2 + 10xy -12[/tex]

============================================================

Explanation:

The area of any given sheet of paper is 8.5*11 = 93.5 square inches.

Divide the volume over this area to get the height of the stack

187/(93.5) = 2

The stack is 2 inches tall.

Extra info: The thickness of each piece of paper is 2/500 = 0.004 of an inch which approximates to about 0.1016 mm.

Answer:

9.6 square inches.

Step-by-step explanation:

We are given that ΔBAC is similar to ΔEDF, and that the area of ΔBAC is 15 inches. And we want to determine the area of ΔDEF.

First, find the scale factor k from ΔBAC to ΔDEF:

[tex]\displaystyle 5 k = 4[/tex]

Solve for the scale factor k:

[tex]\displaystyle k = \frac{4}{5}[/tex]

Recall that to scale areas, we square the scale factor.

In other words, since the scale factor for sides from ΔBAC to ΔDEF is 4/5, the scale factor for its area will be (4/5)² or 16/25.

Hence, the area of ΔEDF is:

[tex]\displaystyle \Delta EDF = \frac{16}{25}\left(15\right) = 9.6\text{ in}^2[/tex]

In conclusion, the area of ΔEDF is 9.6 square inches.

The equation of the line that is parallel to the line 5x + 2y = 12 and passes through the point (-2, 4) is y = [tex]-\frac{5}{x} x-1[/tex]

Parallel lines have the same slope. Therefore, using slope intercept form.

y = mx + b

m = slope

b = y-intercept

Therefore,

5x + 2y = 12

2y = -5x + 12

[tex]y = -\frac{5}{2} x+12[/tex]

The slope of the line is [tex]-\frac{5}{2}[/tex]

Base on parallelism, for the line that passes through (-2, 4)

y = mx + b

4 = [tex]-\frac{5}{2} (-2)+b[/tex]

b = -1

Therefore,

y =

learn more on parallel lines here: https://brainly.com/question/18245473

Answer:

$4.25

Step-by-step explanation:

11+22+54+14=112

$220+$256= 476

476÷112=$4.25

Using pythagorean trplet

[tex]\\ \sf\longmapsto AC^2=AB^2+BC^2[/tex]

[tex]\\ \sf\longmapsto AC^2=6^2+8^2[/tex]

[tex]\\ \sf\longmapsto AC^2=36+64[/tex]

[tex]\\ \sf\longmapsto AC^2=100[/tex]

[tex]\\ \sf\longmapsto AC=\sqrt{100}[/tex]

[tex]\\ \sf\longmapsto AC=10[/tex]

Answer:

36

Step-by-step explanation:

of means multiply and is means equals

2/3 *x = 24

Multiply each side by 3/2

3/2 * 2/3 *x = 24 * 3/2

x = 36