Mathematics High School

Question 12 (2 points)
Solve the system of equations using subsititution.
y = 2x - 3
y + 5 = 3x

Answers

Answer 1

Answer:

(2,1)

x = 2

y = 1

Explanation:

Check the image

Question 12 (2 Points)Solve The System Of Equations Using Subsititution.y = 2x - 3y + 5 = 3x
Answer 2

Answer:

(2,1)

Step-by-step explanation:

Since we already have an equation for y, all we need to do is plug that into y in the other equation.

y + 5 = 3x

(2x - 3) + 5 = 3x

2x - 3 + 5 = 3x

2x + 2 = 3x

2 = x

Now that we know y, we just need to plug the value of x into the equation.

y = 2(2) - 3

= 4 - 3

= 1

Related Questions

Use the distributive property to write an expression that is equivalent to 6(w - 4)

Answers

Answer:

6w-24

Step-by-step explanation:

You would distribute 6 into the parentheses, which would turn (w-4) to 6w-24

Answer:

(w - 4)6

Step-by-step explanation:

its the same exact thing but if you're looking for the simplified version then it's 6w-24

Solve the following system of equations show all your work. Write the solution as a point (x,y) (4 points).
3x + 5y = -40
–x + 4y = -15?

Answers

Answer:

-5,-5

Step-by-step explanation:

m a  t  h  w  a  y  .  c  o  m

If (5^n)^3 = 5^12 then n= ?
6

Answers

Answer: n=4

Step-by-step explanation:

Uh I did some trial and error and it came up with the right answer

Find the volume of the sphere
I NEED HELP!!!

Answers

904.78 I believe
Explanation
To find the volume here is the formula
(4/3 x pie x radius cubed)
Since they give you the diameter then just half it (6)
(4/3 x pie x 216)

Find the percent of change of 2/5 to 1/3?

Answers

Equals 50% decrease

Find the volume of the cylinder.

Answers

Answer:

Step-by-step explanation:

V=πr^2h is the equation for volume of a cylinder.

the radius is half of 50 so 50/2=25.

then 75 is the height so you plug the vaules in

V=(3.14)((25)^2)(75)

then multiply and you get 147187.5 rounded to the nearest whole number that is 147188

hope this helps :)

what is the answer?????

Answers

Answer:

40 meter (4000 centimeters)

Step-by-step explanation:

bro just do 4 x 10 = 40 x 100 = 4000

Give me Brainllest

luna mixes 3/4 cup of orange juice with 3/8 cup of cranberry juice.she gives 5/8 cup of juice to mags. how much is left in lunas glass

Answers

Answer:4/8 or simplified answer 1/2

Step-by-step explanation:

3/4 + 3/8, first you have to find the highest common factor of 4 and 8.

The answer is 9. The denominator of both side will be 8. Now you ask yourself 4 times what gives you 8 and times the numerator by that number. And do the same for the 8.

6/8 + 3/8= 9/8

9/8 - 5/8= 4/8

The simplified answer is 1/2

ASAP!!! and no links please 25 points!!!!!
The radius of a can of soda is 0.75 inches. Find the area of the top of the can. Round to the nearest hundredth.

(Values only! No units!)

Answers

Answer:

2.36

Step-by-step explanation:

Multiply the radius (0.75) with the value of pi (3.14.....)

0.75 x pi = area

area = 2.35619449019

ROUNDED TO HUNDREDTHS = 2.36

hope this helps :)

Find the volume of the rectangular pyramid.
16 ft
-Ft--
2 ft
7 ft
Figure not drawn to scale.
Answer:
ft 3

Answers

The volume of the pyramid is 3 feet
The answer should be 3 ft

Please help me I’m struggling

Answers

Answer:

i think it's a

hope this helps :)


At an auto repair shop. 3.5 hours of labour costs $311.50. What is the labour
charge for a 5 hour job?

Answers

445 .                       Answer:

Step-by-step explanation:

445 I think ………………………….

Place the quadratic y=2x^2+24x+79 into vertex form by using the method of completing the square and then state the coordinates of its vertex.

Answers

Answer:

[tex]y=2(x+6)^2+7[/tex]

[tex](-6,7)[/tex]

Step-by-step explanation:

[tex]y=2x^2+24x+79[/tex]

Completing the square is a process of converting a quadratic equation in standard form into vertex form.

The first step in completing the square is grouping the quadratic and linear terms of the quadratic equation.

[tex]y=(2x^2+24x)+79[/tex]

Factor out the coefficient of the quadratic term,

[tex]y=2(x^2+12x)+79[/tex]

Now complete the square, add a term to make the grouped part of the equation a complete square, then balance the equation.

[tex]y=2(x^2+12x+36-36)+79[/tex]

Simplify,

[tex]y=2(x^2+12x+36)+79+(2)(-36)[/tex]

[tex]y=2(x+6)^2+79-72[/tex]

[tex]y=2(x+6)^2+7[/tex]

The x-coordinate of the vertex of the equation is equal to (-1) times the numerical part of the quadratic term, and the y-coordinate is equal to the constant.

[tex](-6,7)[/tex]

Based on the data given in the table,
which is a reasonable estimate of
the download time of a 600-kilobyte
A 10 seconds
B 12 seconds
C 15 seconds
D 17 seconds

Answers

Answer:

C. 15 seconds

Step-by-step explanation:

It wouldn't be A, because 10 seconds can download 348 kilobytes, it wouldn't be B too as it would be at about 400+ kilobytes, the only possible answer is 15 seconds as the last option takes 17 seconds for 715 kilobytes.

What 6 over 4 simplified

Answers

Correct answer is 6/4 = 3/2 = 1 1 2
The answer for this question is 3/2

Triangle ABC is a right triangle. The length of one leg is 30 cm and the hypotenuse is 78 cm. What is the length of the other leg?

Answers

Answer:

72

Step-by-step explanation:

there is 180 degrees in a triangle

Write two numbers that have the given absolute value.

22

Answers

Answer:

22 and -22

Step-by-step explanation:

Absolute value means the distance of a number from zero

HELPPP ASAP 10 POINTS

Answers

Answer:

circumference = 25.43 in

Step-by-step explanation:

circumference = πd

circumference = (3.14)(8.1) = 25.43 in

f(x) = -2x + 9 What is f(2h) ?

Answers

Answer:

f(2h) = -4h + 9

Step-by-step explanation:

Jacob:  Start with the given function f(x) = -2x + 9 and replace 'x' with 2h:

f(x) = -2x + 9 becomes:

f(2h) = -2(2h) + 9, or

f(2h) = -4h + 9

Answer:

-4h + 9

Step-by-step explanation:

f(x) = -2x + 9

f(2h) = -2(2h) + 9

f(2h) = -4h + 9

HELPPPPPPPPPPPP MEHHHHHHHHHHHHHHHHHHHHHHHHH PLZZZZZZZZZZZZZZZZ GRADES GO OUT TOMMORROW AND I NEED THIS SO I CAN GET MY GRADE UP FROM A D+ PLZZZZZZZZ MY PARENTS WILL MURDER ME

Answers

Answer:

Fair well i hope you lived a good life

Step-by-step explanation:

)) What is 538 rounded to the nearest ten? 500 535 ))
​

Answers

Step-by-step explanation:

540 because it I think or 535 but I I think it's 540

Help graph math brainliest and I will add you

Answers

The answer is D.........

Use the recursive relationship to complete the next two rows of Pascal's triangle. Row 5: 1 _ _ _ _ 1 Row 6: 1 _ _ _ _ _ 1

Answers

Answer:

      1   5  10  10   5   1           Row 5

   1   6   15  20  15   6    1       Row 6

Recursive relationship:

Each row has number of positions = row number + 1. The Row 0 is always 1.

The first and last number in each row is 1, the number in the second position and the penultimate corresponds to the number of the row.  The middle numbers correspond to the sum of the two numbers in the top row. The resulting number from the addition is located in the middle of the numbers added in the next row.

Step-by-step explanation:

The pascal's triangle

* Row 0  =  1

* Row 1 = 1  1

                   1                          Row 0

                1    1                       Row 1

Since there are only two positions, the first and last are 1.

*Row 2 = 1  _ 1

                   1                          Row 0

                1    1                       Row 1

              1   2   1                     Row 2

2 is the sum of 1 + 1 and we place it in the next row between the added numbers 1 and 1.

* Row 3 = 1 _  _    1

                  1                          Row 0

                1    1                       Row 1

              1   2  1                    Row 2

            1   3   3  1                   Row 3

1 + 2 = 3  (the row number and the and adding the numbers from the previous row)

* Row 4 = 1 _  _    _   1

                  1                          Row 0

                1    1                       Row 1

              1   2   1                     Row 2

            1   3  3  1                   Row 3

         1   4   6   4   1                Row 4

1 + 3 = 4  (the row number)

3 +3 = 6

* Row 5 = 1 _  _   _  _   1

                  1                          Row 0

                1    1                       Row 1

              1   2   1                     Row 2

            1   3   3  1                   Row 3

         1   4   6  4   1                Row 4

     1   5   10   10   5   1           Row 5

1 + 4 = 5

4 + 6 = 10

* Row 6 = 1  _  _ _  _  _   1

                  1                          Row 0

                1    1                       Row 1

              1   2   1                     Row 2

            1   3   3  1                   Row 3

         1   4   6   4   1                Row 4

     1   5   10 10  5   1           Row 5

   1   6   15  20  15   6   1        Row 6

1 + 5 = 6

5 + 10 = 15

10 + 10 = 20

can someone please help me

Answers

1.
x=−2±6i
———
5

2. x= 2 ± i√2

If a=10 and b=3 , find the value of x .

Answers

Answer:

7

Step-by-step explanation:

10-3=7

Which is a reasonable conclusion based on the data?
A. As the mass increase, the value increase in a nonlinear association

B. As the mass increase, the value increase in a linear association

C. As the mass increase by 0.1 gram, the value increases $100

D. There is no association between the mass and value

Answers

Answer: b

Step-by-step explanation: :)

2) 24, 12, 10, 15, 10, 22, 12 mean: _________ median: _________ mode: ________ range: ________

Answers

Mean:15
Median:12
Mode:12,10
Range:14

A fine fabric was selling for $10.50 per half yard. Joni bought 2 1/3 yards. How much did he spend? Brainliest for correct answer.

Answers

Answer:

$49 is spended by him.

solution given:

rate=for $10.50 per half yard=$10.50/0.5=$21 per yard

area=2 1/3=7/3yards

now

total cost =rate× area =$21×7/3=$49

NEED HELP ASAP!!!!! Can someone help me???

Answers

Answer:

F = 6x

O = -3x

I = 10x

L = -5

Step-by-step explanation:

FOIL follows the formula:

(a + b)(c + d) = ac + ad + bc+ bd

Answer:

F: (3x) (2x) = 6x^2

O: (3x) (- 1) = -3x

I: (5) (2x) = 10x

L: (5) (-1) = -5

(5x - 7y + 8) + (-y + 6 - 4x) + (9 - 3x + 8y)

Answers

The answer is -2x+ 23
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