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lora16 [44]
3 years ago
9

Solve the following system of equations by substitution.

Mathematics
2 answers:
jasenka [17]3 years ago
5 0

Answer:

The answer is B.(5,10)

Step-by-step explanation:

1. y = 2(5)

  y = 10

2.y = -2(5)+20

  y = -10+20

  y = 10

nlexa [21]3 years ago
3 0

The answer is b (5,10)

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(a) Solve the following formula for b.
pav-90 [236]

Answer:

J Trump has to be a great day of school and I have a great

Step-by-step explanation:

you thank you thank you thank you thank you thank you thank you thank you thank you thank you thank you for your loss of school and I have a great day of school ii

5 0
2 years ago
4. Solve the multistep equation.<br> 4y + 6 + 3y = 15 - 5y + 3
Lubov Fominskaja [6]

Answer:

y=6

Step-by-step explanation:

7y+6=18-5y

-5y, -6

2y=12

y=6

5 0
3 years ago
Read 2 more answers
Find an equation for the line perpendicular to 2x+ 6y = 30 and goes through the point (6,2)
Mashutka [201]

Answer:

y = 3x - 16

Step-by-step explanation:

We are asked to find the equation of the line perpendicular to 2x + 6y = 30

We can use two formulas for this question, either

y = mx + c. Or

y - y_1 = m(x - x_1)

Step 1: calculate the slope

From the equation given

2x + 6y = 30

Make y the subject of the formula

6y = 30 - 2x

Or

6y = -2x + 30

Divide both sides by 6, to get y

6y/6 = ( -2x + 30)/6

y = (-2x + 30)/6

Separate them in order to get the slope

y = -2x/6 + 30/6

y = -1x/3 + 5

y = -x/3 + 5

Slope = -1/3

Step 2:

Note: if two lines are perpendicular to the other, both are negative reciprocal of each other

Perpendicular slope = 3/1

Substitute the slope into the equation

y = mx + c

y = 3x + c

Step 3: substitute the point into the equation

( 6,2)

x = 6

y = 2

2 = 3(6) + c

2 = 18 + c

Make the c the subject

2 - 18 =c

c = 2 - 18

c = -16

Step 4: sub the value of c into the equation

y = 3x + c

y = 3x - 16

The equation of the line is

y = 3x - 16

If you try out the other formula, u will get the same answer

5 0
4 years ago
I really need help on this question
jekas [21]
P(t) = [ 64/ (1 + 11.e⁽⁻⁰ ⁰⁸t⁾]
In 1991, t = 1, hence:

P(t) = [ 64/ (1 + 11.e⁽⁻⁰ ⁰⁸ˣ¹⁾]  =  5.7377 billion or rounded 5.74 billion
(Answer A)
5 0
3 years ago
Please help and show work!!! 20+ points!!!!
gregori [183]

Answer:

Red rose is 4/14

Pink rose is 5 and it is 13 because you are not replacing it, so 5/13

Then you will have to multiply...

4/14•5/13=10/91

Have a great day! Good luck!

8 0
2 years ago
Read 2 more answers
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