solve the system using elimination. show all work. write your answer in the form (x,y) 2x-3y=18 x+y=14

Answer:

4 and -1

Step-by-step explanation:

Let :

Equations formed :

Subtract : Equation 1 - Equation 2

The numbers are : 4 and -1

The percentage of the runner from team B that finishes the race is 21.4%

How to find the percentage that finish the race from team B?

Team A and Team ran a race. Team A had 28 runners and Team B also had 28 runners.

4 runners from team A finishes the race while 12 runners from team B finishes the race.

Therefore, the percentage from team B that finishes the race can be calculated as follows.

percentage from team B that finishes = 12 / 56 × 100

percentage from team B that finishes = 1200 / 56

percentage from team B that finishes = 21.4285714286

percentage from team B that finishes = 21.4%

learn more on percentage here: https://brainly.com/question/13471766

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Answer:

  A. 14040 cubic inches

  B. 61 gallons

Step-by-step explanation:

The volume of a cuboid is given by the formula ...

  V = LWH

__

One yard is 36 inches, so 1 yard 3 inches is 36 +3 = 39 inches.

One foot is 12 inches, so 1.5 ft = 1.5×12 = 18 inches.

The volume of the fish tank is ...

  V = (39 in)(18 in)(20 in) = 14,040 in³

The volume is 14,040 cubic inches.

__

One gallon is 16 cups, so 976 cups is 976/16 = 61 gallons.

976 cups equals 61 gallons.

_____

Additional comment

One gallon is 231 cubic inches, so the volume of the tank is actually about 972 cups, or 60.8 gallons.

Answer:

8 motors

Step-by-step explanation:

The fuses can carry one 5 HP motor.

This replaced by n number of 5/8HP motors.

That mean the new values of horsepower is equal to the previous value.

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

Explanation:

1 gallon = 4 quarts

2 gallons = 8 quarts

1/4 of 8 quarts = 2 quarts

She used 2 quarts for her bedroom and 3 for the hallway. Therefore, she used 2+3 = 5 quarts total.

That leaves 8 - 5 = 3 quarts for the living room.

Answer:

A: 3 Quarts

Step-by-step explanation:

1 gallon = 4 quarts

1/4 of 2 gallons = 1/4 × 2

                         = 1/2 gallon

⇒ 1/2 gallon = 2 quarts

Therefore, Mieko used 2 quarts of paint to paint her bedroom.

If she used 3 quarts to paint the hallway, then

⇒ total number of quarts used = 2 + 3 = 5 quarts

As she bought a total of 2 gallons of paint:

⇒ 2 gallons = 2 × 4 = 8 quarts

Therefore the remaining unused paint (to paint the living room) is:

⇒ total paint - used paid = 8 quarts - 5 quarts

                                         = 3 quarts

Answer:

x=10

y=[tex]10\sqrt{3}[/tex]

Step-by-step explanation:

Since there is a 30 degree angle, it is a special right triangle, 30 60 90 triangle. The shorter leg represents "a," the longer leg represents "a√3", and the hypotenuse represents 2a.

The triangle has a hypotenuse of 20 and we are trying to find x and y. x=10 because x is the opposite side of 30 degrees and x is half of the hypotenuse. y=[tex]10\sqrt{3}[/tex] because we already know the x value and y is opposite of 60 degrees. As mentioned before, the longer leg represents a√3.

Hope this helps and have a good day.  

Answer:

9 - 5x = 7

Step-by-step explanation:

Nine (9) less (-) then the product (*) of 5*x, equals (=) to 7

9 - 5x = 7

Answer:

length = 9 cm

Step-by-step explanation:

perimeter = p =26 cm

width = w=  4 cm

perimeter of a rectangle= 2*w+2*L

L= length

so we have:

26 = 2*(4) +2*L

26= 8 +2L

26-8 = 2L

18 = 2L

L= 18/2

L =9 cm = length

Answer:

267 miles

please vote me brainliest. Thank you.

At the end of 12 weeks, Ai Mi has run 22 miles.

As mentioned in the question, Ai Mi just started a running plan where she runs 12 miles the first week and then increases the number of miles she runs by 5% each week.

The function which is in format f(x) =a^x  where a is constant and x is variable,  the domain of this exponential function lies   (-∞, ∞).

here,
Let the total run be x, for 12 weeks
According to the question,

x = 12×(1 + 5%/100)¹²
x = 12(1.05)¹²
x = 21.55
x ≈ 22 miles

Thus, At the end of 12 weeks, Ai Mi has run 22 miles.

Learn more about exponential function here:

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Answer:

5

Step-by-step explanation:

Divide the expression by r on both times; d/r=rt/r. You'll remain with t=d/r.

then substitute t=40/8 which equals to 5.

Answer:

(2,-2), (4,-2), (1,-4), (6,-4)

Check the picture below.

Answer:

g(f(x)) = 9x² + 15x + 4

Step-by-step explanation:

Given :

⇒ f(x) = 3x + 4

⇒ g(x) = x² - 3x

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

Solving :

⇒ g(f(x))

⇒ g(3x + 4) = (3x + 4)² - 3(3x + 4)

⇒ g(3x + 4) = (3x)² + 2(3x)(4) + (4)² - 9x - 12

⇒ g(3x + 4) = 9x² + 24x + 16 - 9x - 12

⇒ g(f(x)) = 9x² + 15x + 4

Answer:

50.24

Step-by-step explanation:

Area = 200.96

Let's find the raidus from the area formula.

200.96 =  π · r^2

Divide both sides by  π !

64 = r^2

square root both sides

r = 8.

Now since we know the raidus we can find the circumferewnce.

-

c=2πr

c=2*3.14*8

c= 50.24

Hey there!

(6^3 * 2^6) / 2^3

= (6 * 6 * 6 * 2 * 2 * 2 * 2 * 2 * 2) / 2 * 2 * 2

= (36 * 6 * 4 * 4 * 4) / 4 * 2

= (216 * 16 * 4) / 8
= 3,456 * 4 / 8

= 13,824 / 8

= 1,728

Looking for something that gives you the result of: 1,728

Option A.
12^3

= 12 * 12 * 12

= 144 * 12

= 1,728

Option A. is. possible answer

Option B.
6^3

= 6 * 6 * 6

= 36 * 6

= 216

216 ≠ 1,728

Option B. is incorrect

Option C.
12^6

= 12 * 12 * 12 * 12 * 12 * 12

= 144 * 144 * 144

= 20,736 * 144

= 2,985,984

2,985,984 ≠ 1,728

Option C. is also incorrect

Option D.
2^6 * 2^3

= 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2

= 4 * 4 * 4 * 4 * 2

= 16 * 16 * 2

= 256 * 2

= 512
512 ≠ 1,728

Option D. is also incorrect

Option E.
2^3 * 3^3

= 2 * 2 * 2 * 3 * 3 * 3

= 4 * 2 * 9 * 3

= 8 * 27

= 216

216 ≠ 1,728

Option E. is also incorrect.

Therefore, the answer should be:

Option A. 12^3

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

Answer:

The answer is D.  quadrilaterals

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

Imagine a triangle with two of the corner points being the points (5,5) and (8,1)

The length and width would be 3 and 4 to find the hypotenuse (distance) do

3^2+4^2=x^2

9+16=x^2

25=x^2

x=5

[tex]here \: is \: your \: answer...[/tex]

Step-by-step explanation:

Let (x1,y1) = (5,5) and (x2,y2) = (8,1)

By using distance formula,

[tex]d \: = \sqrt{ {(x2 - x1)}^{2} + {(y2 - y1)}^{2} } [/tex]

[tex]d = \sqrt{ {(8 - 5)}^{2} + {(1 - 5)}^{2} } [/tex]

[tex]d = \sqrt{ {(3)}^{2} + {( - 4)}^{2} } [/tex]

[tex]d = \sqrt{9 + 16} [/tex]

[tex]d = \sqrt{25} [/tex]

[tex]d = 5 \: units[/tex]

Therefore, the distance between (5,5) and (8,1) is 5 units

Answer:

-12

Step-by-step explanation:

Answer:

let the unknown number be 'x'

x + (-12) = -24

x = -24+12

x = -12

Answer:

10) 5.34

11) 2 pack tooth pastes are more expensive

12) Neil

13) 300cm

14) 15cm

15) 448cm

16) 17cm = 170mm

5km = 5000m

17) 20cm = 200mm

Step-by-step explanation:

put as brainliest please

I already put explanation in answer

Answer:

10. $6.28

11. You can see that the 2-pack of toothpaste is more expensive.

12. Neil had more hair cut off, 2.53 > 2.35.

13. 300 centimeters.

14. The ceiling in the hall is 15 centimeters taller than the one in the classroom.

15. 112 centimeters.

16. 5 meters = 500 millimeters

     5 kilometers = 5,000 meters

     17 centimeters = 170 millimeters

17. 5 meters = 5,000 millimeters

     20 centimeters = 200 millimeters

Step-by-step explanation:

10. 2.88 + 2.88 + 0.52 = 6.28

11. Already explained

12. Already explained

13. 1 meter is 100 times a centimeter.

14. 1 meter is 100 times a centimeter.

15. Half of 56 is 28. 4 times 28 is 112.

16. 1 meter is 1000 times a millimeter, 1 kilometer is 1000 times a meter, and 1 centimeter is 10 times a millimeter.

17. 1 centimeter is 10 times a millimeter, and 1 meter is 1000 times a millimeter.

Answer:

1 and 125, 5 and 25

Step-by-step explanation:

Any two numbers that multiply to 125 could be considered as the length and width. Because the formula is: A=wl.

Answer:Point form is (-2,3)

Equation form is x=-2y=3

Step-by-step explanation:

Answer:

See below ~

Step-by-step explanation:

Intervals over which the function is continuous :

Left line :

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

Central line

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

Right line :

Answer:

∠b=82°

Step-by-step explanation:

143°=∠c+∠b (exterior angle property)

143°=61°+∠b

∠b=143-61

∠b=82°

Answer:

Ingredient Percentage=Ingredient Weight/Total Flour x 100%

Step-by-step explanation:

For example, if a formula calls for 60 pounds of water and 100 pounds of flour, the baker's percent would be 60% water. If there are two types of flour being used, the combination of the weight of both flours will be 100%.

Answer:

1.65

Step-by-step explanation:

equation will be 12(f−0.55)=13.20

12f−6.6=13.20

12f = 19.8

f = 19.8/12 = 1.65

So, each can of soup at full price is $1.65.

Answer:

C is 6.3

Step-by-step explanation:

We can apply the pythagorean theorum to find C.

A is 2, B is 6

A^2 + B^2 = C^2

2^2 + 6^2 = C^2

C^2 = 40

C = 6.32455532

Answer:

a

Step-by-step explanation:

6+10+8=24=iscolecles triangle

Answer:

A

Step-by-step explanation:

cosθ  = 8/10

θ = arcCos(8/10)

θ  =36.87

cot(36.87) = 8/x

1.33 = 8/x

x1.33 = 8

x = 6

Therefore , A is the correct Answer

Answer:

first you have to order the numbers

8, 10, 13, 18, 23, 25, 26, 30

Median is between 18 and 23 so we add them then divide the sum by 2

Median: (18 + 23)/2 = 20.5

First Quartile is between 10 and 13 so we add them then divide the sum by 2

First Quartile: (10 + 13)/2 = 11.5

Third Quartile is between 25 and 26 so we add them then divide the sum by 2

Third quartile: (25 + 26)/2 = 25.5

Range: 30 - 8 = 22

Sorry I don't know how to draw a diagram on brainly

Answer:

$0.15 per ounce

Step-by-step explanation:

Unit price = cost / volume of drink

$2.39 / 16 oz = $0.15 per ounce

Hope this helps