How do you solve 3 simultaneous equations using elimination?

Answers

Answer 1

Answer:

Write all the equations in standard form cleared of decimals or fractions.Choose a variable to eliminate; then choose any two of the three equations and eliminate the chosen variable.

Step-by-step explanation:


Related Questions

Convert degrees to radians
Show all the work
2. 45
3. 90

Answers

Answer:

[tex]\frac{\pi }{4}[/tex] and [tex]\frac{\pi }{2}[/tex]

Step-by-step explanation:

To convert from degrees to radians

radian measure = degree measure × [tex]\frac{\pi }{180}[/tex] , then

(2)

radian measure = 45 × [tex]\frac{\pi }{180}[/tex] ( cancel 45 and 180 )

                          = [tex]\frac{\pi }{4}[/tex]

(3)

radian measure = 90 × [tex]\frac{\pi }{180}[/tex] ( cancel 90 and 180 )

                           = [tex]\frac{\pi }{2}[/tex]

help this is khan academy

Answers

Answer:

20

Answer:

20

Step by step:

v = l × w × h

v = 2 × 2× 5

v = 4 × 5

v = 20

Natalie was wrapping a gift for a birthday party
and she measured and found she had 3 1/6 yards of
ribbon. After finishing she had 1 3/4 yards of ribbon
remaining. How much ribbon did she use?

Answers

Answer:

1 5/12 yds

Step-by-step explanation:

3 1/6 - 1 3/4 = 38/12 - 21/12 = 17/12 = 1 5/12 yds

43/19 as a decimal rounded nearest hundredth

Answers

Answer:

2.26

Step-by-step explanation:

To round our answer to nearest hundredth, we will round our answer to 2 digits after decimal. We can see that thousandth value is less than 5 that is 3, so will keep last digit 6 as: Therefore, the decimal value of our given fraction is approximately 2.26 to the nearest hundredth.

A bank offers the following loans:

Bank A Bank B
$105,000
30-year fixed
5.875%
1.25 discount points
M = $621.11
$105,000
30-year fixed
6%
0 discount points
M = $629.53

What is the break-even point for the loans? (4 points)
about 7 years
about 10 years
about 13 years
about 16 years

Answers

Answer:

It is bank A and bank B

about 10 years

The following data points represent the number of holes that moths ate in each of Grandma Marion's
dresses.
7,8,8, 5, 7,8
Using this data, create a frequency table.
Number of holes
Number of dresses
5
6
7
8

Answers

Answer:

1, 0, 2, 3

Step-by-step explanation:

Answer:

1, 0, 2, 3

Step-by-step explanation:

Help me pls ASAP find A

Answers

Answer:

the answer is (3,2) because it show it

find m<VOR
A. 70°
B.80°
C.85°
D.95°

Answers

Answer:

C. 85

Step-by-step explanation:

If you look closely to the protractor, r is in the middle of 80 and 90 which is 85

Find the area of the shaded region.

Answers

Answer:

60+4.5pi

Step-by-step explanation:

6×10 obv + area of circle pi(r^2) and half that for a semi cirxle

Answer:

9 π^2

Step-by-step explanation:

Let's just fined the area of the rectangle: Area= 2lw = A=60

Now, we know the diameter of the Spehre which is 10 -2 -2 = 6, the radius is half of that = 3

A=πr2 = A≈28.27

add A≈28.27 + 60 = 88.27 = 9 π^2≈88.82643

Please Help! Geometry

Answers

Answer:

x =14, y = 38

Step-by-step explanation:

Quadrilateral JKLM is inscribed in a circle, so it is a cyclic quadrilateral.

Opposite angles of a cyclic quadrilateral are supplementary.

[tex]5x \degree + 110 \degree = 180 \degree \\ \\ 5x \degree = 180 \degree - 110 \degree\\ \\ 5x \degree = 70 \degree\\ \\ x = \frac{70}{5} \\ \\ x = 14 \\ \\ 2y \degree + 104 \degree = 180 \degree \\ \\ 2y \degree = 180 \degree - 104 \degree\\ \\ 2y \degree = 76 \degree \\ \\ y = \frac{76}{2} \\ \\ y = 38[/tex]

the volume in cm³, of a cube of edge is 3cm is

Answers

Answer:

27 cm^3

Step-by-step explanation:

edge of cube = a = 3cm  

Volume of cube = a^3 = 3^3= 3×3×3 = 27 cm^3

sorry if im wrong plz  dont report

(hope this helps can i plz have brainlist :D hehe)

Help please, it's for a test due at 11:30 est; Determine if (x-6) is a factor of f(x)=2x^4-3x^3+4x-3. Explain.

Answers

Answer:

if we get 0, when we plug the value of f(x) as 6 in f(x) then (x-6) is a factor of f(x)

f(x) = 2x⁴ - 3x³ + 4x - 3f(6) = 2×6⁴ - 3×6³ + 4×6 - 3f(6) = 2592 - 638 + 24 - 3f(6) = 2616 - 641f(6) = 1975

f(6) is not equal to 0

then (x-6) is not a factor of f(x) = 2x^4-3x^3+4x-3

Create an equation for a different linear function that has twice the rate of change and the same initial value as the one represented by the table
Can someone help me please
No links :/ .

Answers

Answer: y=x+3.5
The function of the original equation (the data table) is y=1/2x+3.5
So 1/2 times 2 is 1 and the y intercept (the initial value) is the same! I hope I helped

If all shoppers get 10% off their purchase today, what is the equation can be used to calculate the portion of the original price?

Answers

Answer:

Step-by-step explanation:

Let the original cost be x

The shoppers get 10% of the original price

Therefore the equation to find final cost =

Discount: 10x/100

Final Cost: 90x/100

Mark brainliest for further answers :)

Phill thinks he had merited the angles blew correctly. Triangle placed on top of a straight line, 50 * at the top left of the triangle, 90 at the bottom left of the triangle, 40* at the bottom right

Answers

No he is wrong because if it were 150° on the right side it would be 30° on the other side

Your help will be much appreciated. 30 points + brainliest.

find exact value of each of the following using half angle formulas​

Answers

Answer:

gimme a sec

Step-by-step explanation:

Answer:

a.   -.259

b. 3.732

c. -.259

d. 3.72972972973

Step-by-step explanation:

A 54 inch pipe is cut up into 2 pieces . One piece is two times the length of the other

Answers

Small = 18 in
Large = 36 in
Please give me Brainliest

What is the solution to the system of equations above?

Answers

Answer:

(-2,-2)

Step-by-step explanation:

the x is -2

also the y is -2

find total surface area of cylinder is R = 7 cm and H = 10 cm​

Answers

Step-by-step explanation:

Given radius , r = 7cm

and height , h = 10cm

Surface Area of Cylinder

[tex] = 2\pi {r}^{2} + 2\pi \: rh \\ = 2\pi( {7}^{2} ) + 2\pi(7)(10) \\ = 2\pi(49) + 2\pi(70) \\ = 98\pi + 140\pi \\ = 238\pi {cm}^{2} [/tex]

I will leave it in terms of pi as i am not sure how you want to leave your answer as.

identify the equation whose vertical graph is a vertical line.

a) y=2x-1
b) y=2
c) x=2​

Answers

Answer:

c

Step-by-step explanation:

3.3 divided by 0.3 please help

Answers

11 I searched it up

Dave has a box that has a length of 12 cm a height of 8 cm and a width of 5 cm. Find the surface area.

Answers

Answer:

Question: Dave has a box that has a length of 12 cm a height of 8 cm and a width of 5 cm. Find the surface area.

Answer:

SA = 2lw+2lh+2hw

SA = 2 X 12 X 5 + 2 X 12 X 8 + 2 X 8 X 5

SA = 392

Step-by-step explanation:

Hope that this helps! :)

Have a great rest of your day/night!

Please thank me on my profile if you found my answer here helpful!

questions 9 & 10 FAST PLS ITS A TEST! WILL GIVE BRAINLIEST!

Answers

Answer:

9: one solution

10: 121

Step-by-step explanation:

Hope that helped!! maybe brainliest?

edit: so sorry 9 is actually two solutions not one

Find a. Round to the nearest tenth:

Answers

Answer:

14.356

Step-by-step explanation:

that's the answer round up to 14.4

3x+4=20 solve the following question

Answers

Answer:

5.33

Step-by-step explanation:

3x=20-4

3x=16

x=5.33

Answer:

x = 16/3

Step-by-step explanation:

3x+4=20

3x = 20 - 4

3x = 16

x = 16/3

3/4-1/5 please i give branliest

Answers

Answer:

0.55

Step-by-step explanation:

Answer:

11/20

(Result in decimals: 0.55)

Step-by-step explanation:

3/4 -  1/5

=  

3 × 5         1 × 4

____  -     ____

4 × 5        5 × 4

=  

15/20 –4/20

=  

15 – 4

_____

  20

=  

11/ 20

Hope I helped!!!!! Maybe Brainliest

Solve the system of equations using the substitution method. Show your work and be sure to include the solution to the system.

Answers

Answer:

Is that simultaneous equation

You can ask if something is not clear or you don't understand

The solution of system of equations y=x-1 , 2x+y=8 are x=3 and y=2 which we get by substitution method.

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

The given system of equations are

y=x-1 ...(1)

2x+y=8...(2)

By using substitution method we solve the value of x and y.

Substitute y value in equation (2)

2x+x-1=8

Combine the like terms

3x-1=8

Add 1 on both sides

3x=9

Divide both sides by 3

x=3

Now plug in x value in y equation.

y=3-1

y=2

Hence, the solution of system of equations y=x-1 , 2x+y=8 are x=3 and y=2 which we get by substitution method.

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ2

Please help me with the right Awnser

Answers

Answer:

40 m2

Step-by-step explanation:

96m² is your Answer:

Solution given:

base[b]=12m

height[h]=8m

we have

Area of parallelogram=b×h=12×8=96m²

Find the 15th term of the geometric sequence 7, -21, 63, ...7,−21,63,

Answers

Answer:

not sure

Step-by-step explanation:

Esha is seeking to invest for college. She selects an account with a compound interest rate of 2% per year. If she initially deposits $7,000, then how much will her investment be worth at the end of 5 years?

Answers

Answer:

$7700

Step-by-step explanation:

Given data

Rate= 2%

Principal= $7000

Time= 5 years

The simple interest expression is

A=P(1+rt)

substitute

A=7000(1+0.02*5)

A=7000(1+0.1)

A=7000*1.1

A=7700

Hence the amount is $7700

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