15j + 12k = 18
5j + 4k = 6

Answers

Answer 1
Using substitution or elimination?

1. multiply the first or second equation by a number that will make one variable 0
For example; if you multiply the bottom equation by “-3”, it will be “-15j-12k=-18”

2. add the two equations together
It will be 15j-15j which equals 0. Additionally, 12k-12k=0. And, 18-18=0

This means that you have 0=0. When this happens, you have infinitely many solutions. Your teacher may only want you to put infinitely many, or they may want you to solve in terms of one of the variables. If it is the latter, let me know and I will help with that.


Related Questions

please answer 46 points. Do not comment if u don’t know

Answers

Answer: 1ST ONE CUZ THE LINE IS AT A CERTAIN ANGLE AT A POINT TO MATCH THE FIRST ANSWER

Step-by-step explanation:

HELP PLEASEEE

The points (0, 2), (1, 3), (2, 6), and (3, 11) are on the graph of a function. Which of the following equations represents that function?

A. h(x) = 0.5x^2 +1.5

B. h(x) = x + 2

C. h(x) = x^2 + 2

D. h(x) = 2x^2

Answers

Answer:

C. h(x) = x^2 + 2

Step-by-step explanation:

Try the points by substituting values of x and y

This gives us the function

h(x) = x^2 + 2

Answer:

c

Step-by-step explanation:

Use your slope formula to solve form.
(5.7) (10. 12)

Answers

Answer:

y=x+2

Step-by-step explanation:

Did on Calculator : )

someone please help ASAP!!

Answers

Answer:

its an rhombus

Step-by-step explanation:

please help it should be ez for you guys ;-; brainiest to best answer :D

Answers

Answer:

1: -16/0 or undefined

2: 0

Step-by-step explanation:

Answer:

17

≈ 0.31

Step-by-step explanation:

Do the rise over run tactic for both of these points :

[tex]\frac{Y2 - Y1}{X2 - X1}[/tex]

Substitute : (8,7) and (8, -9)

[tex]\frac{(-9 ) -8}{7-8}[/tex]

[tex]\frac{-17}{-1}[/tex]

[tex]17[/tex]

Substitute : (-5, 8) and (4, 8)

[tex]\frac{8- 4}{8- (-5)}[/tex]

[tex]\frac{4}{13}[/tex]

≈ [tex]0.31[/tex]

Which of the polygons can always be classified as a rhombus?
a) Quadrilateral
b) Trapezoid
c) Rectangle
d) Square

Answers

Answer:

c

Step-by-step explanation:

C is the answer I think if I’m wrong sorry

In a theater there are 15 chairs in the first row, each row has 3 more chairs than the previous
row, and there are 17 rows. How many chairs are in the theater?​

Answers

Answer:

663.

Step-by-step explanation:

simplify p - 9 + 1 - 6p

Answers

Answer:

-8-5p

Step-by-step explanation:

I'm pretty sure

Here's another question, same one (kind of)
5x - 8 = 3x + 4

Answers

Answer:

x=6

Step-by-step explanation:

5x - 8 = 3x + 4

    +8         +8

5x=3x+12

-3x  -3x

2x=+12

/2    /2

x=6

Ross and Ronnie are late for their favorite show . Ross walks around a rectangular park with dimensions of 150 ft by 215 ft. Ronnie decides to cut across the park in a diagonal path. Who walks the shortest distance and by how much? *

Answers

Answer:

Ronnie walked the shortest distance by (365 - 262.15 ) = 102.85 ft

Step-by-step explanation:

The image attached represent the rectangular park. In this case, the dimensions are;

AB = CD = 215 ft

AC = BD = 150 ft

Total distance walked by Ross = AB + BD = 215 + 150 = 365 ft

Distance walked by Ronnie = AD

∠ABD = right angle triangle, using pythagoras rules;

AD² = AB² + BD²

AD² = 215² + 150²

AD² = 68725

AD = √68725

AD = 262.15 ft

Distance walked by Ronnie = 262.15 ft

Ronnie walked the shortest distance by (365 - 262.15 ) = 102.85 ft

if f(x)=3, what is f(4)= ?

Answers

Answer:

12

Step-by-step explanation:

Since f(x) = 3, you would multiply 3 by 4. This is because you are basically saying that you have 4 x's and each x is equal to 3. 3+3+3+3=12 or 4(3)=12

Danielle is keeping track of the growth of a basil plant. The table below shows the measurements she made on different days. Day of Measurement 8 16 Height (cm) 42.2 59.0 69.5 88.4 98.9 21 30 35 What is the average rate of growth of the plant, in centimeters per day, from the 16th day to the 30th day? O A 2.95 cm B. 3.30 cm C. 2.10 cm D. 1.96 cm ​

Answers

Answer:

sorry cant help

Step-by-step explanation:

Can I get help on this math question plz I need it

Answers

Answer:

(1,3)

Step-by-step explanation:

the answer is where they intersect and the two lines intersect at (1,3)

Answer:

(1,3)

Step-by-step explanation:

The graph shows you where the point meets (your answer)

hope this helps!!

If the mean of a normal distribution is 26 what is the median of the distribution A. 18 B. 14 C. 26 D. 22

Answers

Answer:

C. 26

Step-by-step explanation:

Since in the question it is mentioned that the mean of the normal distribution is 26 and also as we know that the normal distribution considered to be symmetric so the mean would be equivalent to the median

As in the question the mean is 26 so the median would also be 26

hence, the correct option is C.

what is the answer to 8x ≥ -32

Answers

Answer:

x<=-4

Step-by-step explanation:

Since x is multiplying to 8 you would divide and since your using multiplication and division you would switch the signs.

x is less than or equal to -4

ILL GIVE U BRAINLYIST

Answers

Answer:

3240

Step-by-step explanation:

6 x 12 x 5 x 9 =3240

A TV that usually sells for $180.18 is on sale for 15% off. If sales tax on the TV is 5%, what is the price of the TV, including
tax?
A. $162.34
B. $214.86
C. $160.81
D. $159.28

Answers

Answer:

C, $160.81

Step-by-step explanation:

180.18 decrease 15% =

180.18 × (1 - 15%) = 180.18 × (1 - 0.15) = 153.153

153.153 increase 5% =

153.153 × (1 + 5%) = 153.153 × (1 + 0.05) = 160.81065

When using substitution to solve a system of equations, how can you tell when a system has no solution? Use the drop-down menus to explain your answer.
A system has no solution when the resulting equation is always
Choose...
.
Choose...
is an example of this type of equation.

Answers

Answer:False

Step-by-step explanation:

The commenter before me is trolling. If 3=5, that is a false equation, not true.

There is a photo Below as an attachment or probably shown.

Whats the solution to −2+7<−41 ???

Answers

Answer:

1st step is 19

Step-by-step explanation:

2x-7+7=41+8.

2x=48.

2x÷2=48÷2.

x=19

What is the distance (in units) between points C and D? Round your answer to the nearest hundredth. c(-5,-1) d(0,3)

Answers

Answer:

6.4

Step-by-step explanation:

The whole thing is like a triangle, with the distance between the points as the hypotenuse.

Use the pythagorean theorem, a²+b² = c².

To calculate a, calculate the distance between the x-values of (-5,-1) and (0.3) by subtracting.

0-(-5) = 5

a = 5

To calculate b, calculate the distance between the y-values of (-5,-1) and (0.3) by subtracting.

3-(-1) = 4

b = 4

now plugin a = 5 and b = 4 into the pythagorean theorm to calculate c, or the distance.

5²+4² = c²

25+16 = c²

41 = c²

√41 = √c²

c = 6.4

If are AC is 122 degrees and arc BC is 192 degrees, what is the measure of angle ACB

Answers

ACB = AC + BC

ACB = 122 + 192 = 314

The answer is b. 314 degrees

the biosphere is connected to the hydrosphere when____

Short answer please, thank you :)

Answers

Humans (biosphere) harness energy from the water (hydrosphere) by having it spin turbines (lithosphere) to produce electricity.

The total mass of 500 crayons is 1 kilogram. What is the mass of each crayon in grams?

2 grams
3 grams
4 grams
5 grams

Answers

Answer:

I believe it is 2 grams.

Step-by-step explanation:

there are 1000 grams in 1 kg, there are 500 crayons, therefore each crayon weighs 2 grams

2 grams

1 kg = 1000 g
1000 / 500 = 2g

Tara earns $8.00 per hour for babysitting. Which expression represents how much Tara earns for h hours of babysitting? 4 83​

Answers

Answer:

Total amount Tara earned for babysitting for h hours = 8h

Step-by-step explanation:

Amount earned per hour for babysitting = $8.00

Number of hours of babysitting = h hours

Total amount Tara earned for babysitting for h hours =

Amount earned per hour for babysitting × Number of hours of babysitting

= 8 × h

= 8h

Total amount Tara earned for babysitting for h hours = 8h

Anyone can help me with math for solving for a side in the right triangles for khan academy

Answers

Answer:

7.45

Step-by-step explanation:

We are given a right triangle with one side length known and an angle know so we can use some trigonometry.

You need to find the hypotenuse so you are going to use either sine or cosine.

Since the adjacent from the angle is given (SOH-CAH-TOA) we can use cosine so,

cos(20) = 7/h

=>h = 7/cos(20)

=> 7.44924

=> 7.45

the quotient of four and e

Answers

Answer:

1.4 i think

Step-by-step explanation:

A sports competition was held in London and Paris. The prize money in London was £140 000 and the prize money in Paris was €160000
(£1 = €1.15)
Which city paid out the most prizre money?​

Answers

160,000 divided by 1.15 = around 139,000 so London had the higher pay out

Deriving and using formulae
1. a + 10 when a = 6
2. b - 3 when b = 120

Answers

Answer:

a. 16

b. 117

Step-by-step explanation:

a. 6+10=16

b. 120-3=117

Find the measure of angle B given sin B = 3/8​

Answers

Answer:

Step-by-step explanation:

You have to use a calculator to take the inverse sine of 3/8

∠B = 22 degrees

Answer:

B=22 degrees

Step-by-step explanation:

You have to use a calculator to take the inverse sine of 3/8

Find the unit rate. 1 1/4 cups of flour per 1/8 cup of butter

Answers

the unit rate it 1/32
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