100 POINTS solve the system using linear combination. show all work.{ 5x + 3y = 41 {3x - 6y = 9

Answers

Answer 1

Answer:

y = 2

x = 7

Explanation:

5x + 3y = 413x - 6y = 9

Make the coefficient of "y" in equation 1 same

{ 5x + 3y = 41 } * 2     →  10x + 6y = 82  ........equation 1

                                  →  3x - 6y = 9 ........equation 2

solving them using linear combination

10x + 6y = 823x - 6y = 9

     ============

13x = 91x = 7

Find y:

5x + 3y = 415(7) + 3y = 413y = 41 - 353y = 6y = 2
Answer 2
5x+3y = 41 multiply whole thing by -2 so the y’s cancel out
3x-6y = 9

Becomes
-10-6y=-82
- subtract
3x-6y = 9

=
-13x+0y=-91
X=7

Plug in x to find y
3(7)-6y=9
21-6y=9
Y=2



Related Questions

Jonathan purchased 30 markers for $5.40. What is the price per marker?

Answers

Answer: 0.18 is your answer

Step-by-step explanation:

If 30 markers = $5.40
Then 1 marker = 5.4/30=$ 0.18
Hence the price of a marker is $ 0.18

SOLVE THE QUADRATIC FUNCTION
ANSWER CORRECTLY AND GET BRAINLIEST

Answers

Answer:

[tex] x = \dfrac{-1 \pm \sqrt{11}}{2} [/tex]

Step-by-step explanation:

(2x - 3)² - 14 = 2x(x - 7)

4x² - 12x + 9 - 14 = 2x² - 14x

2x² + 2x - 5 = 0

[tex] x = \dfrac{-2 \pm \sqrt{2^2 - 4(2)(-5)}}{2(2)} [/tex]

[tex] x = \dfrac{-2 \pm \sqrt{4 + 40}}{4} [/tex]

[tex] x = \dfrac{-2 \pm 2\sqrt{11}}{4} [/tex]

[tex] x = \dfrac{-1 \pm \sqrt{11}}{2} [/tex]

Peter plays a game where each correct answer gets him -3 points and every incorrect answer gets him 1 point. If he got 6 correct and 4 incorrect answers, how many points does he have? Write an equation and solve.

Answers

Y=-3x+z
Y=-3(6)+4
Y=-18+4
Y=-14

What is the discriminant of the quadratic equation x2 - 92 - 8 = 0?

Answers

I hope that i helped ;D

Which fractions are closer to 0 than to 1?

Answers

Answer:

Fractions that are less than 1/2 but more than 0 are closer to 0 than to 1.

Step-by-step explanation:

Another explanation of this is anything that is less than 0.5 is closer to zero.

Hope this helps! Have an amazing day! :D

Write the number 6\times 10^{-3}6×10 {−3}
in standard form.

Answers

Answer:

6 · 10⁻³

Step-by-Step Explanation:

The number 6 time 10 to the power -3 is 6 · 10⁻³ in standard form.

Please Help! Locks in an hour! Will give brainlest!

Answers

Letter C, 0,2π

Step-by-step explanation:

0, 2π is the answer

mark me brainlest thankss!

El ruedo de la plaza de toros "Las Ventas", de

Madrid, España mide 61. 5 metros de diámetro,

mientras que el de la Plaza "México", tiene una

circunferencia de 135. 02 metros. ¿Cuál de los dos

ruedos es más grande?

Answers

Answer:

mention any one contribution of maiti nepal

Donald bought 2 game controllers at Gamestop for $36. Each one cost the same amount. What is the unit rate for a single controller? & Jake was offered the following amounts of an entire pizza: 0.6, 4/5, or 0.75. Jake really likes pizza and wants the largest amount of pizza he can get. Which of the amounts should he select?

Answers

Answer:

See below ~

Step-by-step explanation:

Question #1

Donald bought 2 controllers for $36Unit rate = Amount / Number of controllersUnit rate = $36 / 2Unit rate = $18 per controller

Question #2

0.6, 4/5, 0.75We have to convert them all into either: fractions or decimalsLet's go with decimals0.6, 0.75 and 4/54/5 = 0.80.6 < 0.75 < 0.8Jake should select the 4/5 piece as it is the largest

Somebody pls help me do this

Answers

Answer:

-0.7 + 0.5 - 0.3

= -1 + 0.5

= -0.5 pound(s)

-0.5 = -5/10

plot your point at -5/10

(for the number line)

Today, there are 4296 more panthers in Florida then there were 50 years ago. If this is a percent increase of 80%, how many panthers are living in Florida today? Round to the nearest whole number
A.8,777 panthers
B.9,666 panthers
C.5,370 panthers
D.10,256 panthers

exam pls help

Answers

Answer:

C

4296 - 80% = 859.2 + 4297 = 5155.2

Rounded up to the nearest answer

I need help on the question in the image

Answers

820.05 you take the starting number and subtract and add the other numbers based on if there is a minus sign or not

help me please :)

Evaluate the expressions 3x- 2 and 4x+ 4 for the following values of a. When you have found the value for each expression, write a statement using <, >, or = that shows how the two values are related.

Answers

Answer:

-8<-4

Step-by-step explanation:

Given expressions:

[tex]3x-2\\4x+4[/tex]

(a)

When x = 0:

[tex]=3(0)-2[/tex]

[tex]=-2[/tex]

[tex]=4(0)+4\\=4[/tex]

Answer:

-2<4

(b)

When x = -6

[tex]=3(-6)-2\\=-18-2\\=-20[/tex]

[tex]=4(-6)-2\\=-24-2\\=-26[/tex]

Answer:

[tex]-20 > -26[/tex]

(c)

When x = 5:

[tex]=3(5)-2\\=15-2\\=13[/tex]

[tex]=4x+4\\=4(5)+4\\=20+4\\=24[/tex]

Answer:

13<24

(d)

When x = -2:

[tex]=3(-2)-2\\=-6-2\\=-8[/tex]

[tex]=4x+4\\=4(-2)+4\\=-8+4\\=-4[/tex]

Answer:

-8<-4

Bob can paint a house in 9 hours. Jim can paint it in 10 hours. How long would it take them to paint the house working together?​

Answers

Answer:

Well they are 2 possible answers. 10 - 9, and 10 + 9. I don't know what answers you can choose, and what operation you use but those were the only I got. I'm sorry if this didn't help.

Step-by-step explanation:

What is the surface area of a sphere with a volume of 523.6 m2?

Answers

The Area would be 314.6

Answer and show all of your work.

Answers

Answer:

105 shifts

Step-by-step explanation:

Hourly net rate of pay = $12

1 shift = 8 hours

⇒ net pay per shift = $12 × 8 = $96

Total cost  = tuition + residence + books

                  = $4500 + $4800 + $700

                  = $10,000

To calculate how many shifts Joanne needs to work, divide the total cost by the pay per shift and round it up:

Number of shifts = total cost ÷ net pay per shift

                            = $10,000 ÷ $96

                            = 104.1666666...

                            = 105 shifts

Note: we need to round up, as if Joanne works 104 shifts, she will earn $9,984 which is not quite enough to pay for tuition, residence and books.

Help me please thanks

Answers

2t + 16

hope it helps...!!!!

hhhhhheeeelllppppp meee

Answers

Answer: I got a answer of 23.3 but nearest would be 24

What is the area of the base of this figure?

Answers

Answer:

12 cm²

Step-by-step explanation:

The base face of the trriangular prism is a triangle with base (of the triangle) 8 cm and height (of the triangle) 3 cm.

area of triangle = base × height / 2

area = (8 cm)(3 cm)/2

area = 12 cm²

It should be 12cm^2
8cm x 3cm / 2

math please help me ​

Answers

Answer:

Step-by-step explanation:

1. angle y will correspond to angle Q.

2. They are not similar since the side Q R has the line going 2 squares and the corresponding side YZ has the line passing three squares

What value of x will make the triangles similar by the sss similarity theorem? x =

Answers

The  value of x will make the triangles similar by the sss similarity theorem is 77

Simlarity theorem of triangles

A triangle is a 2-dimensional shape with 3 sides and angles

From the given diagram, we will take the ratio of simlar sides to determine the value of "x"

35/x = 20/44

Cross multiply

20x = 35 * 44
20x = 1540
x = 154/2
x = 77

Hence the  value of x will make the triangles similar by the sss similarity theorem is 77

Learn more on similarity theorem here; https://brainly.com/question/21247688

Answer: The answer is 28

Find the volume of the cylinder.
Either enter an exact answer in terms of
π
πpi or use
3.14
3.143, point, 14 for
π
πpi.

Answers

Answer:

144pi

Step-by-step explanation:

The formula for the volume of a cylinder is base*height

The base of a cylinder is a circle, so it's pi*r^2

r = 6, so pi*r^2 is 36pi

height is 4 so 36pi*4 is 144pi

Answer:

144pi

Step-by-step explanation:

khan

Please help I will give brainliest.

Answers

Answer: See below

Step-by-step explanation:

[tex]$$Given that,Height of ball hit by Phil,$$\begin{aligned}f(t) &=(-16 t-2)(t-2) \\&=-16 t^{2}-2 t+16 \times 2 t+4 \\&=-16 t^{2}+30 t+4\end{aligned}[/tex]

[tex]$$Part 1 \\ From the graph $B$ all hit by the John hits the court at $t=1 \mathrm{sec}$After hitting the ground position will be zero.Then.$$\begin{aligned}0 &=-16 t^{2}+30 t+4 \\& \Rightarrow t=2 \sec \text { or } \mathrm{t}=-\frac{1}{8}\end{aligned}$$Time cannot be negative, so the accepeted value is $2 \ \mathrm{sec}$.That is after $2 \sec$ the ball hit by Phill will reach the ground \\Therefore, the ball hit by John will hit the court first at $t=1 \sec$[/tex]

[tex]$$Part 2 \\Maximum height reached by the Phill's ball,$$f_{\max }=-16 \times\left(\frac{15}{16}\right)^{2}+30 \times \frac{15}{16}+4=18.06 \mathrm{ft}$$From the graph, the maximum height reached by John's ball is $6.2 \mathrm{ft}$ $\underline{\text { So }}$ Phil's tennis ball reach a higher maximum than John's tennis ball[/tex]

[tex]$$Part 3 \\The maximum height reached by the Phill's ball,$$f_{\max }=-16 \times\left(\frac{15}{16}\right)^{2}+30 \times \frac{15}{16}+4=18.06 \mathrm{ft}=18 \mathrm{ft}$$[/tex]

What is the product of 4.45 and 2.2?

Answers

Answer:

Hello there! I believe it is 9.79

Step-by-step explanation:

Have a great rest if your day!

Answer:

The answer is 9.79

Step-by-step explanation:

4.45 x 2.2 = 9.79

What is the perimeter of kite obde? 17 units 23 units 27 units 60 units

Answers

The perimeter is the sum of all sides. Then the perimeter of the kite is 27 units, then the correct option is C.

What is Geometry?

It deals with the size of geometry, region, and density of the different forms both 2D and 3D.

The length of the kite (x) will be given by the Pythagoras theorem

H² = P² + B²

H² = 15² + 8²

H² = 225 + 64

H² = 289

 H = 17

Then

[tex]\rm x = \dfrac{H}{2} \\\\x = \dfrac{17}{2}\\\\x = 8.5[/tex]

And another length of the kite is 5 units.

Then the perimeter of the kite will be

Perimeter = 2(8.5 + 5)

Perimeter = 27

More about the geometry link is given below.

https://brainly.com/question/7558603

6.
What are the focus and the directrix of the graph of x =
2012
1
-J22 (1 point)
(
24
O focus (0, -6), directrix x = 6
O focus (6,0), directrix x = -6
O focus (0,6), directrix y = -6
O focus (-6, 0), directrix y = 6

Answers

focus (0,6), dirextrix y=-6
it’s the third one

The coordinate plane below has 4 points plotted on it.
y
А
10
9
8
7
H
6
5
4
С
3
2.
1
0 1 2 3 4 5 6 7 8 9 10
For which point is the difference between its x- and y-coordinates the greatest?
A
Point A
B
Point C
C
Point H
D
Point L

Answers

i THINK THE ANSWER IS b

This is Science I could not pick...
I put Math ca it is the best I could pick because there is no Science option.
_____ are considered dietary proteins.
oils
apples
potatoes
eggs

Answers

Answer:

Oils

Step-by-step explanation:

:)

Answer:

oils

Step-by-step explanation:

what is the next two term in the sequence 6, 10, 14, 16

Answers

Answer:

Next two terms of the sequence is 20 and 24.

Step-by-step explanation:

The arithmetic sequence is 6, 10, 14 , 16

First term (a) = 6

Subtract the first term from the second term:

10 - 6 = 4

Subtract the second term form the third term:

14 - 10 = 4

Subtract the third term from the Fourth term:

16 - 14 = 4

Here, You will notice that each time you move from one number to the next one it increases by four. So, the difference between one and the next term is four.

So,

Next two terms are:

16 + 4 = 20

20 + 4 = 24

Hence,

Next two terms of the sequence is 20 and 24.

Step-by-step explanation:

Given Sequence :- 6 , 10 , 14 , 16

To find :- Next 2 terms in the sequence

Solution :-

D( common difference ) = a2 - a1

D = 10 – 6

D = 4

Next two terms ,

16 + D ; 16 + 4 = 20

20 + D ; 20 + 4 = 24

PLEASE HELP ME DUE TODAY!!!! (17 points)

Answers

Answer:

3. C

4. I'm gonna say 9 points

Step-by-step explanation:

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