7x + 2y = 12

-3x -2y = 4

Answers

Answer 1

Answer:

(4, -8) or x=4 y=-8

Step-by-step explanation:

Answer 2

Answer: x=4 and y=−8

Step-by-step explanation: 7x+2y=12, −3x−2y=4

7x+2y+−2y=12+−2y

7x /7 = −2y+12 /7

x= −2 /7 y+ 12 /7

−3( −2 /7 y+ 12 /7 )−2y=4

−8 /7 y+ −36 /7 + 36 /7 =4+ 36 /7

−8 /7 y / /−8/7 = 64 /7 /−8 /7

y=−8

x= −2 /7 y+ 12 /7

x= −2 /7 (−8)+ 12 /7

x=4

x=4 and y=−8


Related Questions

Find the area of the shaded region

Answers

Answer:

area of a circle πr^2

r = 10/2 r = 5

π5^2 = 78.5

area of the square length X width

7 x 7 = 49

78.5 - 49 = 29.5

shaded region = 29.5 square cm

29.5cm , have a good day!

Round the fraction to the nearest whole number. 3 1/2

Answers

Answer:

4

Step-by-step explanation:

3 1/2= 3.5

5 rounds up, so it'll be 4

Answer:

4 hope this helps

Two sides of an acute triangle measure 5 inches and 8 inches. The length of the longest side is unknown.
What is the greatest possible whole-number length of the unknown side?
O 8 inches
O 9 inches
O 12 inches
O 13 inches

Answers

Answer:

9

Step-by-step explanation:

answer only if correct:)

Answers

The HYPOTENUSE formula for this is 2x and you have x = 8 so your answer would be 16!

Below is a set of data about temperatures. The range of a set of data is the distance between the lowest and highest value in the set. What is the range of these temperatures?
9°C, -3°C, 22°C, -5°C, 11°C, 15°C

Answers

Answer:

22-(-5)= 27

Step-by-step explanation:

22 is the highest temp. -5 is the lowest.

The range of the given temperatures is 27.

What is the range of the data set?

"It the difference between the highest and lowest value of the data set."

For given example,

a set of data about temperatures is,

9°C, -3°C, 22°C, -5°C, 11°C, 15°C

First, we arrange the data values in ascending order.

-5°C, -3°C, 9°C, 11°C, 15°C, 22°C

Here, the lowest temperature = -5°C

the highest temperature = 22°C

So, the range of the data set would be,

R = highest temperature value - lowest temperature value

R = 22 - (-5)

R = 22 + 5

R = 27

Therefore, the range of the given temperatures is 27.

Learn more about the range of the data set here:

https://brainly.com/question/20607770

#SPJ2

Find the number from the expanded form 3* 10^4 + 7 x 10^2 + 5 x 10^0
a)30705
b)375
c)3075
d)3705

Answers

Answer:

A)30705

Step-by-step explanation:

3* 10^4 + 7 x 10^2 + 5 x 10^0

Evaluate the exponent

3⋅10^4+7⋅10^2+5⋅10^0

3⋅10000+7⋅10^2+5⋅10^0

Multiply the numbers

3⋅10000+7⋅10^2+5⋅10^0

30000+7⋅10^2+5⋅10^0

Evaluate the exponent

30000+7⋅10^2+5⋅10^0

30000+7⋅100+5⋅10^0

Multiply the numbers

30000+7⋅100+5⋅10^0

30000+700+5⋅10^0

Evaluate the exponent

30000+700+5⋅10^0

30000+700+5⋅1

Multiply the numbers

30000+700+5⋅1

30000+700+5

Add the numbers

30000+700+5

30705

✓-32

imaginary numbers​

Answers

Answer:

-32 imaginary numbers

[tex] \sqrt{ - 32} \\ = \sqrt{ - 1 \times 16 \times 2} \\ = \sqrt{ - 1} \times \sqrt{16} \times \sqrt{2} \\ =\boxed{ 4 \sqrt{2} i}[/tex]

4√2i is the right answer.

Pls help, Will give brainliest

Use the diagram to answer the question.



corresponds to which line segment?

CD
BC
DE
CE
none of the above

Answers

Answer:

Step-by-step explanation:

AB is opposite <ACB         Given from the diagram

<ACB = <DCE                     Vertically opposite angles.

DE will be in proportion to AB because both are opposite the two vertically opposite angles.

Answer:

I think its believe its DE

(-0.75X – 8) – (3.5X +5.4)

Answers

Answer:

− 4.25 X  −  13.4

Step-by-step explanation:

Find the area and perimeter

Answers

Answer:

area = 62ft

Step-by-step explanation:

Monday Bellwork Which solution would make this equation have infinitely many solutions? 6(x – 3) + x = 7x +

-18, -9, 18, or 9​

Answers

Answer:-18

Step-by-step explanation:

6(x−3)+x=7x−18

Step 1: Simplify both sides of the equation.

6(x−3)+x=7x−18

(6)(x)+(6)(−3)+x=7x+−18(Distribute)

6x+−18+x=7x+−18

(6x+x)+(−18)=7x−18(Combine Like Terms)

7x+−18=7x−18

7x−18=7x−18

Step 2: Subtract 7x from both sides.

7x−18−7x=7x−18−7x

−18=−18

Step 3: Add 18 to both sides.

−18+18=−18+18

0=0

3( x + 4y + 6) - 2(x + 8y + 3).​

Answers

Answer:

x-4y+12

Step-by-step explanation:

120-120= i need help please

Answers

The answer is 0 because any number - itself is equal to 0

Simplify (a+b)(a^2-ab+b^2)

Answers

Answer: a^3 - b^3

Step-by-step explanation:

ACFG is a parallelogram, If AG = 2x + 10 and CF = 5x – 2, find CF.

Answers

Answer:

d. 18

Step-by-step explanation:

Lengths AG and CF of the parallelogram are equal.

i.e AG = CF

where AG = 2x + 10

          CF = 5x -2

→ 2x + 10 = 5x-2

(collecting like terms): 5x - 2x = 10 + 2

→ 3x = 12

x=12÷3 = 4

∴ CF = 5x -2 = 5(4) -2 = 20 - 2 = 18

CF = 18 (answer)

nestor fills a jar with marbles.each marble weighs 1/25 pound .the total weighs of all marbles is 3/5 pound how many marbles are in the jar

Answers

Answer:

Total number of jars will be 15.          

Step-by-step explanation:

Given

The weight of each marble = 1/25 pound

The weight of all marbles = 3/5 pound

To determine

How many marbles are in the jar?

Let 'n' be the total number of jars

The total number of jars can be calculated by dividing the weight of all marbles by the weight of each marble.

Thus,

The total number of jars n = [weight of all marbles] / [weight of each marble]

                                           = [3/5] / [1/25]

                                           = [3 × 25] / [5 × 1]

                                           = 75 / 5

                                           = 15

Thus, total number of jars will be: n = 15                    

Answer:

15 marbles :) hope it helped a bit!

Raul is 75 ft from the world's tallest totem pole in Alert Bay, Canada. It is 173 ft tall. Raul's eyes are 5 ft from the ground, what is the angle of elevation from his line of sight to the top of the totem pole? Round the the nearest degree.

Answers

Answer:

65.9

Step-by-step explanation:

group of friends wants to go to the amusement park. They have $366.50 to spend parking and admission. Parking is $19, and tickets cost $34.75 per person, cluding tax. How many people can go to the amusement park?

Answers

Step 1:
Subtract $19 from total
366.50 - 19 = 347.5

Step 2:
Divide this total by the ticket price
347.50 / 34.75 = 10

Step 3:
You have your answer
10 people can go to the amusement park

An 18 foot ladder is leaning against a building. The base of the ladder is 6 feet from the base of the
building. What angle does the ladder make with the ground?

Answers

Answer:

right trianlge i think

Step-by-step explanation:

Find the volume of a pyramid with a square base, where the area of the base is 19.8 in 2 and the height of the pyramid is 16.4 in. Round your answer to the nearest tenth of a cubic inch.

Answers

Answer:

108.2in^3

Step-by-step explanation:

V=(1/3)Bh

V=(1/3) (19.8) (16.4)

V=108.2in^3

1/2y=25
Help please

Answers

Answer:

=> 25 x 2 = 50

Step-by-step explanation:


a) Write 600 as the product of prime factors.
Give your answer in index form.

Answers

Answer:

2^3*5^2*3

Step-by-step explanation:

600=2*2*2*5*5*3=2^3*5^2*3

x - 25% (of x) = 40
solve for x.

Answers

Answer:

x-1/4

Step-by-step explanation: i hope this help

What type of angle is show​

Answers

A right angle is 90 degrees, an obtuse angle is larger than 90 degrees and an acute angle is less than 90 Degrees.

The angle shown is smaller than 90 degrees so it is c. Acute

SOMEONE HELP

How do I even solve this?

Answers

Select 8 rectangles from the 32 rectangles

Answer:

oh its just the purple over the entire square so that would be 8/32 x 2

Step-by-step explanation:

Solve it pls 4 - 7k = 1 - 6k

Answers

k = 3
4 - 7k + 6k = 1 - 6k +6k
4 - k = 1
4 - k + k = 1 + k
4 = 1 + k
4 - 1 = 1 + k - 1
3 = k
k = 3

Jada is solving the equation shown below.

Negative one-half (x + 4) = 6

Which is a possible first step to begin to simplify the equation? Select two options.
Divide both sides of the equation by –2.
Subtract 4 from both sides of the equation.
Multiply both sides of the equation by –2.
Distribute –2 over (x + 4).
Distribute Negative one-half over (x + 4).

Answers

i believe the two correct answers would be

multiply both sides of the equation by -2

and

distribute the -1/2 over (x+4)

Mary crealed the equation y = 5x - 4 for a table and wondered what the output would be for x = -2. Solve for the outpum
A
y = -14
B
y = -1
y = 14
y = 6

Answers

Y=-14

Reason: just plug in the the x=-2 into the equation y=5x-4, then solve. The picture sets up the equation correctly.

helpp ill mark u as Brain list​

Answers

The answer will be 6 :)

A flower pot’s base has six sides that are all the same length. Each side measures x−6 units. The base’s perimeter is 78 units.

What is the value of x?

Enter your answer in the box. PLEASE HELP AS SOON AS POSSIBLE

Answers

The answer is in the picture below
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