Mathematics High School

Solve each system of equations algebraically
1. y=x+5 y=6 2. y=x+12 y= -18 3. y=x-10 y= -12

Answers

Answer 1

Answer:

Step-by-step explanation:

ky=x+5y 62y=x

Step: Solvey=x+5yfor x:

y=x+5y

y+−x=x+5y+−x(Add -x to both sides)

−x+y=5y

−x+y+−y=5y+−y(Add -y to both sides)

−x=4y et's solve for x.

y=x+12y

Step 1: Flip the equation.

x+12y=y

Step 2: Add -12y to both sides.

x+12y+−12y=y+−12y

x=−11y

Answer:

x=−11y

 

Related Questions

Which expression is equivalent to ?

Answers

Answer:

Step-by-step explanation:

r^9/r^3

this is equivalent to r^(9-3)=r^6

PLEASE ANSWER! WILL GIVE BRAINLIEST.

The ratios 9:18, 12:24, 15:30, 18:36, and 21:42 form a pattern of
equivalent ratios in the table below.

Which is another ratio in this pattern?
A. 1:3
B. 6:12
C. 24:27
D. 28:49

Answers

B. 6:12 is the answer (times the first number by 2 to get the second number)

need some help here please

Answers

Answer:

Elimination

Step-by-step explanation:

The following system of equations can be easily solved by elimination as we can simply eliminate x-term.

Substitution will take a lot of time because you need to move to make either x-term or y-term as the subject then substitute in.

Graphing Method — You need to find the intercepts of both equations. You also have to convert into slope-intercept form which takes a lot of time.

The graph of a quadratic function in shown below.

Which statements about this graph are not true? Select all that apply.

A.
The graph has a y-intercept at (0,5).

B.
The graph has a relative maximum point (-3,4).

C.
The graph has an x-interceptat (1,0).
D.
The graph has the y-axis as a line of symmetry.

E.
The graph has zeros at x = -5 and x = -1.

F.
The graph represents the function f(x) = -x2 - 6x - 5.

Answers

Answer:

E

Step-by-step explanation:

The statements that are not true are:

The graph has a y-intercept at (0,5) is not true.

The graph has a relative maximum point (-3,4) is not true,

The graph has zeros at x = -5 and x = -1 is not true.

Options, A, B, and E are the correct answer.

What is a function?

A function has an input and an output.

A function can be one-to-one or onto one.

It simply indicated the relationships between the input and the output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

- The y-intercept can be found by setting x=0, which gives f(0)=-5.

So the y-intercept is (0,-5).

- To find the relative maximum,

We need to find the vertex of the parabola.

The x-coordinate of the vertex is given by -b/2a, where a=-1 and b=-6.

So, x=3 is the x-coordinate of the vertex.

To find the y-coordinate, we plug in x=3 into the function:

f(3) = -(3²) - 6 (3) - 5 = -32.

So the vertex is (3,-32), which is a relative minimum, not a maximum.

- To find the x-intercepts,

We set y  =0 and solve for x.

-x² - 6x - 5 = 0.

Factoring or using the quadratic formula,

We get x = -5 and x = -1.

- The y-axis is a line of symmetry for any parabola of form f(x)=ax²,

f(-x) = a (-x)² = ax² = f(x).

- To find the zeros,

We set f(x) = 0 and solve for x.

-x² - 6x - 5 = 0.

Factoring or using the quadratic formula,

We get x = -5 and x = -1.

So the graph has zeros at x = -5 and x = -1, not x = -2 and x = 3.

- The graph represents the function f(x) = -x2 - 6x - 5.

The graph is true.

Thus,

The graph has a y-intercept at (0,5) is not true.

The graph has a relative maximum point (-3,4) is not true,

The graph has zeros at x = -5 and x = -1 is not true.

Learn more about functions here:

https://brainly.com/question/28533782

#SPJ2



Find the missing side length. Round to the nearest tenth.
11
8​

Answers

19 is the answer so hope this helps

Triangle ABC is reflected over the line y = 1. What
are the coordinates of B'?
O (-2,3)
O (-2,5)
(2, -3)
O (4, -3)

Answers

Answer:

-2,5

Step-by-step explanation:

Answer:B

Step-by-step explanation:Got it right on edge 2020

please help me! its about solving system by substitution

Answers

Answer:

Step: Solvex=4for x:

x=4

Step: Substitute4forxin2x+3y=14:

2x+3y=14

(2)(4)+3y=14

3y+8=14(Simplify both sides of the equation)

3y+8+−8=14+−8(Add -8 to both sides)

3y=6

3y

3

=

6

3

(Divide both sides by 3)

y=2

Answer:

x=4 and y=2

Step-by-step explanation:

Y=2

first you would plug x into the equation:
2(4)+3y=14 which then gives you:
8 + 3y =14
then you would subtract by 8 on both sides leaving you with :
3y=6
then you divide by 3 on both sides and get Y=2

Which is the correct answer?, need help

Answers

Answer:

A

Step-by-step explanation:

What is 16/24 in its simplest form?

Answers

Answer:

2/3

Step-by-step explanation:

16/24

4/6

2/3

Answer:

2/3

Step-by-step explanation:

16 ÷ 8 = 2

24 ÷ 8 =3

so the simplest form is 2/3

You roll a 6-sided die. Find the P(4).

Answers

Because all outcomes are equally weighted, the probability you are looking for is given by :-
Number of favorable eventsTotal number of events
Number of favorable events
Total number of events

In your case: 6 or Even outcome={2,4,6}
6
or Even outcome
=
{
2
,
4
,
6
}
and Outcomes={1,2,3,4,5,6}
Outcomes
=
{
1
,
2
,
3
,
4
,
5
,
6
}

Hence:

Number of favourable eventsTotal number of events=36=12

what is the slope for (-12,-5),(0,-8)

Answers

Answer:

m= - 1/4

       

Step-by-step explanation:

Determine whether a triangle can be formed with the given side lengths.

10 ft, 3 ft, 19 ft

A triangle________ have these three side lengths.
(can or cannot)

Answers

Answer:

A triangle can have these three side lengths.

9(k - 2) = -6 what is k

Answers

Answer:

K = 4/3 or 1 1/3

Step-by-step explanation:

4/3 or 1 1/3 - 2 is 2/3

2/3 times 9 is 6

Hope this helps ;)

9(k-2)=-6
/9. /9

K-2=-6/9
+2. +2
K=1.333333

!!HELP ASAP PLEASE CORRECT ANSWER GETS BRAINLY!!

Answers

QS=5x-2

Because 3x+2x= 5x and -2 stays the same

✨PLEASE HELP✨ DUE SOON

Answers

hey :) it’s (2,5) it’s C !!

Answer:

The answer is C!!

Step-by-step explanation:

4(2y-8)+y=13

8y-32+y=13

9y-32=13

9y=45

y=5

4x+y=13

4x+(5)=13

4x=8

x=2

Which ratio is equivalent to the given ratio?
45:63

Select each correct answer.
o 5/7
o 15/21
o 25/31
o 15/23

Answers

Answer:

5/7 is the only one

Step-by-step explanation:

5/7 would be correct!!

happy to help! :)

15) Jeff left a tip of $5.25 for a $30.00 meal. What percent tip did he leave?

Answers

10% sorry if wrong ....

Peter earns $ 12.40 each week for completing his chores. Ria earns 1.2 times as money per week as Peter. How much does peter earn each week.? Show your work.

Answers

Answer:

Ria earns 14.88 dollars each week

Step-by-step explanation:

Amount earned by peter every week = $12.40

If Ria earns 1.2 times as money per week as Peter, then;

Amount Ria earns = 1.2 * 12.40

Amount Ria earns = 14.88

Hence Ria earns 14.88 dollars each week

Find the surface area of the triangular prism. Will mark brainliest!

Answers

Answer:

720 sq ft

Step-by-step explanation:

Formula:

2 B + P x H

Answer:

720 sq ft

Step-by-step explanation:

fourmula

2b+p×h

What type of association would you expect between a persons age and hair length (positive/negative etc)

Answers

Answer:

:0 according to my calculations

Step-by-step explanation:

cheese

John’s square garden has a perimeter of 26 ft. If John walks through the garden on the diagonal, how far did John walk? Round answer to the nearest tenth.

Answers

Answer:

9.19 ft

Step-by-step explanation:

Since it's a square, we know that all the sides are equal to 26/4 which equals 6.5. Then, we use the Pythagorean theorem to calculate the diagonal (since the diagonal is splitting the square into two right triangles). So we to a^2+b^2=c^2. So 42.25+42.25=84.5. The square root of 84.5 rounded to the nearest tenth is 9.19

Marco. Need to buy some cat food at the nearest store three bags of cat food cost $15.75 how much with Marcos me on five bags of cat

Answers

Answer:

$26.25

Step-by-step explanation:

We are told that Marco needs to buy some cat food. At the nearest store, 3 bags of cat food cost $15.75.  

First of all we will find cost of 1 bag of cat food by dividing 15.75 by 3.

   

 

Now we will find the amount that Marco has spend for 5 bags of cat food by multiplying 5.25 by 5.  

Therefore, Marco has spend $26.25 for purchasing 5 bags of cat food.    

Answer:

5.25 per bag

Step-by-step explanation:

Just divide the amount of money by the number of bags needed.

15.75 divided by 3 = 5.25

0.4x-0.25=1.75

A. x=2
B. x=5
C. x=1.5
D.x=5.2​

Answers

x = 5 is the answer :)

7. JKLM is an isosceles trapezoid.
Find the median, ZM, and J.



Answers

Answer:

Median is 31, if you are talking about the parallel line in between JK and and ML

megan is trying to find the length of the segment using the Pythagorean Theorem


Part A : megan made one mistake in her work , which caused her to get the wrong answer what did she do wrong?

Part B : Calculate the correct length of the segment

Answers

Answer:

10

Step-by-step explanation:

To obtain the length of the segment :

a² + b² = c²

a = 8 ; b = 6

8² + 6² = c²

64 + 36 = c²

100 = c²

Square root of both sides :

Sqrt(100) = sqrt(c²)

10 = c

Mistake in the solution is that 6² = 36 and not 12

yo somebody help me on this i will mark you has brainlist c: plz

Answers

It should be 10.42 meters

You add the two numbers to get how much space is in between the two

What is the solution to the system of equations?

6x−4y=152

y=3x−762

Answers

Answer:

Hi! The correct answer is (1448/3, 686)

Step-by-step explanation:

~Solve for the first variable in one of the equations, then substitute the result into the other equation~

Find the unit rate.
84 miles in 12 days
Unit rate:
mi :
day

Answers

Answer:

7/12 7 miles a day

Step-by-step explanation:

Plz help me will give crown.

Answers

the answer is   -2/5 hope this helped

URGENT DUE IN 10 MINUTES!

You have 8 cups of flour. It takes 1 cup of flour to make 24 cookies. The function C(f) = 24f represents the number of cookies, C, that can be made with f cups of flour. Which set of ordered pairs represent points on the graph of C(f) = 24f?

Answers

Answer:

c(0) = 24*0 = 0  

c(8) = 24*8 = 192  

Your range is [0,192]

Step-by-step explanation:

Answer:

You have 8 cups of flour it takes 1 cup of flour to make 24 cookies the function c(f)=24f

c represents the number of cookies

f represents the cups of flour

You have 8 cups of  flour, we can use only 0 to 8 cups of flour.

so domain f is 0 to 8 cups [0,8]

Now we find the range

1 cup of flour to make 24 cookies

So 8 cups of flour = 24* 8 = 192 cookies

using 8 cups you can make 192 cookies

So number of cookies is from 0 to 192

Range is [0,192

Step-by-step explanation:

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