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Which statement correctly explains how Andre could find the solution to the following system of linear equations using
elimination?
(85-9-15
(75-21-12
O Multiply the first equation by -7 and the second equation by 8, and then subtract
O Multiply the first equation by -7 and the second equation by 8, and then add.
O Multiply the first equation by 2 and the second equation by 9, and then add.
O Multiply the first equation by -2 and the second equation by 9, and then subtract.

Answers

Answer 1

Answer:3rd

Step-by-step explanation:

Answer 2

Answer:

C) Multiply the first equation by 2 and the second equation by 9, and then add.

Step-by-step explanation:


Related Questions


Solve x^2 = 64, where x is a real number.
Simplify your answer as much as possible.
If there is more than one solution, separate them with commas.
If there is no solution, click on "No solution".

Answers

Answer:

x=8

Step-by-step explanation:

8 times 8 equals 64

One positive integer is 18 more than a second positive integer. If the sum of twice the greater and three times the smaller is 86, find the larger integer

Answers

Step-by-step explanation:

euuruuryduduehehehdhddhdu

Which shows the algebraic representation of the phrase and its value when n=4.27
"twenty-eight plus the product of five and a number

Answers

28 + (5•n)
28 + (5•4.27)
28 + (21.35)
28 + 21.35
49.35

evaluate each expression 5(10-1)

Answers

Answer:

the answer is 45 if its is what you need

Step-by-step explanation:

i got 100 on test and had that question

1)
What number is 4 times as many as 25?

Answers

Answer:

100

Step-by-step explanation:

In February, you have a balance of $135 in your bank account. Each month you deposit $45. Write an equation to describe the situation.

Answers

Answer:

135+45x

Step-by-step explanation:

6666666666666666666666666666666

PLEASE HELP ME!!! Question says complete the table!

Answers

Answer:

8000•1.05 8000(1.05)¹

(8000•1.05)•1.05 8000(1.05)²

((8000•1.05)•1.05)•1.05 8000(1.05)³

(((8000•1.05)•1.05)•1.05)•1.05 8000(1.05)⁴

8000(1.05)^t

What is the best first step to solve the inequality 5x – 3 ≥ 2?

Answers

Do the Math is Easy man!!!

Answer:

add 3

Step-by-step explanation:

trust me

Idently the domain of the function
-5 0 All real numbers
All positive numbers

Answers

Answer:

13

Step-by-step explanation:

if you take the ideal number and multiply it with 12 the subtract 13 and add 1 and subtract seven the divide that by 11 and then Divid that answer by 17 and then you have your answer which is 13

Solve for y in the following equation.

Answers

Yes you’re almost there the answer is negative 9

Answer: The last one.... -9

hope this helped :>

2. In right triangle RST with right angle S the m4R = 24°. What is the
measure of T?*
о
24°
O 56°
0 66°
O 116°

Answers

Sum of the interior angles of any triangle equal 180° ;

So :

90° + 24° + T = 180°

114° + T = 180°

subtract both sides 114

T = 180° - 114°

T = 66°

_________________________________

And we're done....

♥️♥️♥️♥️♥️

Lea's school is selling tickets to the annual talent show. On the first day of ticket sales the school sold 12 adult tickets and 7 child tickets for a total of $236. The school took in $217 on the second day by selling 7 adult tickets and 14 child tickets. What is the price each of one adult ticket and one child ticket?

Answers

Answer:

Step-by-step explanation:

let the number of children be x

and the number of adults be y

so

7x+12y=236-----1

and

14x+7y=217------2

equating both 1 and 2 we have

7x+12y=236-----1

14x+7y=217------2

multiply 1 by 2

subtract 2 from 1 we have

  14x+24y=472-----3

 - 14x+7y=217------2

    0x+17y=255

17y=255

y=255/17

y=15

put y=15 in eqn 1 we have

7x+12y=236-----1

7x+12*15=236-----1

7x+180=236-----1

7x=236-180

7x=236-180

x=56/7

x=8

therefore a child will cost $8 and adult will cost $15

This diagram of a rectangular city park was drawn using a scale of 1 centimeter to 20 meters

(In the diagram shown, assume each square on the grid is 1 centimeter in length.)

What is the area, in square meters, of the actual park?

What is the scale factor?

Answers

Answer:

Scale factor for the drawing from actual park = [tex]\frac{1}{20}[/tex]

Area of the actual park = 1200 cm²

Step-by-step explanation:

Length of the rectangular city park = 5 cm

Width of the rectangular park = 6 cm

Using scale factor 1 cm = 20 meters

Scale factor = [tex]\frac{\text{length of the park in drawing}}{\text{Actual length of park}}=\frac{1}{20}[/tex]

[tex]\frac{5}{\text{Actual length of park}}=\frac{1}{20}[/tex]

Actual length = 5 × 20 = 100 meters

Actual width = 6 × 20 = 120 meters

Area of the rectangular park = length × width

                                               = 100 × 120

                                               = 1200 square meters

Therefore, Scale factor from actual length to the length in drawing = 1 : 20

Area of the rectangular park = 1200 square feet

A purse is on sale for $25.60. If the original price of the purse was $32.00,what is the percent of discount?

Answers

Answer:

20%

Step-by-step explanation:

The dollar amount of the discount is $32.00 - $25.60 = $6.40

Now we need to find what percent of $32.00 is $6.40.

To find what percent a part is from a whole, divide the part by the whole and multiply by 100%.

percent = part/whole * 100%

part = $6.40

whole = $32.00

percent = $6.40/$32.00 * 100%

percent = 20%

Find he percent of change from 1250 to 1,755mi

Answers

28.7749% increase because

1250/1755 = .7122
.7122 *100 = 71.22%
100 - 71.22 = 28.7749

yoooo can someone help meeee thanks In advance

Answers

Answer:

The slope of F = 5.

Not 100% sure.

1. Yearly membership with the online music club costs $48. Members pay $0.99 per song to download music. Nonmembers may download songs for $1.29 each.

Answers

Answer:

160 musics

Step-by-step explanation:

let the total amount/charges be y

let the number of musics be x

For members total

y=48+0.99x-------1

For non-members total

y=1.29x-------------2

we are expected to solve for the number of music where members and non members get to pay the same amount

equating 1 and 2 we have

48+0.99x=1.29x

48=1.29x-0.99x

48= 0.3x

x=48/0.3

x=160 musics

Simply the expression


-8 (5b + 2 ) - 7 ( b -5 ) .




help please

Answers

Answer:

= −47b + 19

Step-by-step explanation:

PLEASE help me with this equation ​

Answers

Answer:

1/25

Step-by-step explanation:

I worked out the equation!

1/2 is the answer ..................

1 11. What is the constant of proportionality? y = 8x​

Answers

Answer:

-8

Step-by-step explanation:

lere

the answer to this is 8

1 What is the nature of the roots of the quadratic equation if the value of its discrimman
is zero?
The roots are not real
o the roots are rational and not equal
b. The roots are irrational and not equal d the roots are rational and equal
2. Whal is the ans of symmetry of the parabola y​

Answers

Answer:

If d is zero, both roots are rational and equal.

Step-by-step explanation:

Quadratic Equations

The standard representation of a quadratic function is:

[tex]f(x)=ax^2+bx+c[/tex]

where a,b, and c are constants.

Solving with the quadratic formula:

[tex]\displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

The discriminant is defined as:

[tex]d=b^2-4ac[/tex]

The sign of the discriminant defines the nature of the roots of the quadratic equation as follows:

If d is positive, both roots are real and differentIf d is negative, both roots are imaginary and conjugateIf d is zero, both roots are rational and equal.

buses to ayton leave the station every 25 mins, buses to bleeford leave the station every 40 mins, buses at both places leave at 9am. what is the next time buses to ayton and bleeford leave the station together??

Answers

Answer:12:20

Step-by-step explanation:

40*5=200min

25*8

3hr and 20 min

State the horizontal asymptote of the rational function.
f(x) = x^2 + 9x-9/x-9

Answers

Answer:

no horizontal asymptote

if pooh bear got a bucket of honey and hops got one how much do I need to steal from hops >;3

Answers

Answer

all of it

Step-by-step explanation:

Answer:

one bucket/all of it

Step-by-step explanation:

help!!!!!!!!!!!!!!!!!!!

Answers

Answer:

154/350 = n/100

n = 0.51333 or 51.333% (I don't know what decimal your class rounds to but it is 3 repeating)

Jay won 51.333% of the solitaire games he played. Hope this helps!!

Step-by-step explanation:

Write the following equation in slope intercept form.

x-2y=42

y=__ x+__

Answers

Answer:

Blank 1: 1/2

Blank 2: -3

Step-by-step explanation:

HELP ASAPPPPP mL ABC=117 -> Find mL CBD

Answers

Answer:

The answer is 77 degrees

I need help? I don’t know what to dooooooo

Answers

Your suppose to graph where the line is

Question 2 What is the slope and y intercept of 4x + 6y = -20? ​

Answers

Answer:

Slope is -2/3. The y - intercept is -10/3.

Step-by-step explanation:

Simplify the equation by using division property of equality.

Find the average rate of change for the function over the given interval.
2) y = 6x3 - 6x2 - 8 between x = 2 and x = 4

Answers

Answer:

132

Step-by-step explanation:

The average rate of change over a function can be given by: f(b)-f(a)/b-a. Where b is the second part of the interval and a is the first part.

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

____

x = 2

6(2)^3-6(2)^2-8

6(8)-6(4)-8

48-24-8

24-8

16

____

x = 4

6(4)^3-6(4)^2-8

384-96-8

288-8

280

_____

280-16/4-2 = 264/2 = 132

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