Can someone help me??

Answer:

y=x+9

Step-by-step explanation:

Let the number be x

6a+6= a-9

collect the like terms

5a=-15

a= -3

6(-3) +6= -3 -9

-12= -12

The number is -3

Answer:

42 teachers

Explanation:

Teacher to student ratio is 1:23

If there are 966 students, then divide by 23 to get how many teachers their are.

966/23=42

Since we have a unique value of x and y, it shows that the system of the equation is consistent and independent.

Given the system of equation expressed as:

3x + y = 3

x - 2y = 4

Solve simultaneosly;

3x + y = 3 ............. 1 * 1

x - 2y = 4 ...............2 * 3

_________________________

3x + y = 3

3x - 6y = 12

Subtract

y-(6y) = 3 - 12

7y = -9

y = -9/7

Substitute y = -9/7 into the equation to get x

x - 2y = 4

x - 2(-9/7) = 4

x + 18/7 = 4

x = 4 -  18/7

x = 3/7

Since we have a unique value of x and y, it shows that the system of the equation is consistent and independent.

Learn more here: https://brainly.com/question/20052273

Answer:

0.4

Step-by-step explanation:

Answer:

0.4

Just divide the top of the fraction by the bottom

Step-by-step explanation:

Hope this helps :)

pls make brainliest :p

Answer:

2

Step-by-step explanation:

3x + 7=15 -x

4x= 8

x= 2

3*2 + 7 = 15-2

Answer:

x=25, y=19

Step-by-step explanation:

130+2x=180

x=25

54+2x+4y=180

y=19

Answer:

x = 25 , y = 19

Step-by-step explanation:

130° and 2x° are adjacent angles on a straight line and sum to 180° , so

130 + 2x = 180 ( subtract 130 from both sides )

2x = 50 ( divide both sides by 2 )

x = 25

--------------------------------------------------------------

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

130° is an exterior angle of the triangle , then

54 + 4y = 130 ( subtract 54 from both sides )

4y = 76 ( divide both sides by 4 )

y = 19

Answer: 1 by 20, 2 by 19, 3 by 18, 4 by 17, 5 by 16, 6 by 15, 7 by 14, 8 by 13, 9 by 12, 10 by 11.

#a

Co-ordinates are

#b

No,Both triangles are congruent not same.

#c

#d

Yes ratio is same as they are congruent

Answer:

Question A:

A.) (0,0)

B.) (3,3)

C.) (9,6)

Question B:

No, both triangles are congruent, not the same change in x-values.

Question C:

No, both triangles do not have are not the same change in y-values.

Question D:

Yes, their ratios of change are the same.

Answer:

I believe the answers to be:

A. "Sum"

B. "Quotient"

A. "Sum"

Step-by-step explanation:

remember, i = sqrt(-1)

you know what an exponent means, right ?

it means you multiply the enclosed term that many times with itself.

when you envision this as a long chain of (1+i)/(1-i) multiplications, you can see you can group them into pairs, and then multiply these pairs - just half the times than for the single terms.

so,

((1+i)/(1-i))²⁰²⁰ = ((1+i)/(1-i))² ^ 1010

to get an idea what the result of the long chain of multiplications might be, let's start with the square and see, if we can find a pattern, that we then can use to come to a conclusion about the total result.

((1+i)/(1-i))² = (1+i)²/(1-i)²

(1+i)² = 1×1 + 1×i + 1×i + i² = 1 + 2i - 1 = 2i

(1-i)² = 1×1 - 1×i - 1×i + i² = 1 - 2i - 1 = -2i

so,

((1+i)/(1-i))² = 2i/-2i = -1

aha !

so,

((1+i)/(1-i))² ^ 1010 = (-1)¹⁰¹⁰

just to be sure you understand, we use the same trick again

(-1)¹⁰¹⁰ = (-1)² ^ 505 = 1⁵⁰⁵ = 1

as 1 to any power is always 1.

so, the right answer is A.

remember, a negative number to an even power results always in a positive number. and to an uneven/odd power in a negative number.

again, because such an exponent is only the summary of many multiplications.

Answer:

The answer is A

Step-by-step explanation:

Answer:

option A is the right answer correct me if im wrong

Answer:

x > 4

Step-by-step explanation:

hope this helps

Answer:

the answer for question no 8 is. option second...ie 17

Answer:

Exponent - "a quantity representing the power to which a given number or expression is to be raised"

Base - "The number that gets multiplied when using exponents"

Power - "The number of times you use the number in multiplication"

Expanded Form - "A way to write a number by adding the value of its digits"

Standard form - "A way of writing down very large or very small numbers easily."

Exponential form - "a shortcut way of writing repeated multiplication involving base and exponents"

Answer:

$6.99

Step-by-step explanation:

add the number of pounds to gwet the total number of pounds

4.3+1.7=6

divide

41.94/6

$6.99 per pound

Hope this helps!

25.50

Hope this helped you- have a good day bro cya)

Answer:

x=6

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Then solve

x

=

6

Answer:

x = 6

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable and solve for x.

Answer:Secondary sources are works that analyze, assess or interpret an historical event, era, or phenomenon, generally utilizing primary sources to do so. Secondary sources often offer a review or a critique. Secondary sources can include books, journal articles, speeches, reviews, research reports, and more.

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

Answer:

r

Step-by-step explanation:

Answer:

43/18

Step-by-step explanation:

Hope this helps

Answer:43/18 or 2 7/18 or 2.38

Step-by-step explanation:5/6-4/9+2

8x - ¹/₃y = 16

8x - ¹/₃(0) = 16

     8x - 0 = 16

          8x = 16

           8      8

           x = 2

Answer:

according to how i see all numbers are rational

Answer:

Rational:

0.63

-15.5

-11/4

2 1/2

NOT Rational:

-25.348197

0.314587

Step-by-step explanation:

hope this helps ya (⁠ ⁠╹⁠▽⁠╹⁠ ⁠)

Answer:

Terms are positive or negative single mathematical expressions.

Step-by-step explanation:

Answer:

show everything

Step-by-step explanation:

copy and paste all of all of the problem

Answer:

by + ax + c = 0

              -c   -c

by + ax = d

by/b       d/b

ax/a = e/a

     f = x

Step-by-step explanation:

There were no numbers so I substituted them for letters :)

Answer:

x = 12

Step-by-step explanation:

The sum of exterior angles is = 360

one of the angle is given we will need to add all three angles

128 + 8x + 11x + 4 = 360 add like terms

19x + 132 = 360 subtract 132 from both sides

19x = 268 divide both sides by 19

x = 12 replace x in required expressions to find the measure of the angles

Answer:

36

Step-by-step explanation:

hope this helps

8+7+5+7+9

15+5+7+9

20+7+9

27+9

36

= 8+7+5+7+9

= 15+5+7+9

= 20+7+9

= 27+9

= 36