Mathematics High School

Solve by elimination.
5x - 6y = 27
7x + 6y = 9
Show work pls

Answers

Answer 1

Answer:

x = 3y = - 2

Step-by-step explanation:

5x - 6y = 27 .......... Equation 1

7x + 6y = 9 ………… Equation 2

To solve using elimination add the second equation to the first one to eliminate y

That's

5x - 6y + 7x + 6y = 27 + 9

12x + 6y - 6y = 36

12x = 36

Divide both sides by 12

x = 3

Substitute it into any of the equations

Using equation 2

That's

7(3) + 6y = 9

21 + 6y = 9

6y = - 12

Divide both sides by 6

y = - 2

The solutions are

x = 3

y = - 2

Hope this helps you

Related Questions

which Quotient is positive ?

A. 28/-4
B. -24/6
C. 42/-7
D. -35/-5​

Answers

Answer:

D. -35/-5

Step-by-step explanation:

Dividing two negative numbers results in a positive quotient; therefore, the answer is D.

The answer is D -35/-5 :)

a) Work out the value of 5^2 – 1^5× 2^4
b) Work out the value of 7^2 + 4^3 ÷ 2^5​

Answers

First you have to know BODMAS/BIDMAS (idk if all schools teach it like this) but this is the order in which you complete questions so it’s Brackets, Indices, Division/Multiplication, Addition/Subtraction
a) 5^2 is 5x5 which equals 25 1 to the power of anything is always 1 and 2^4 is 2x2x2x2 which is 16
So 5^2-1^5x2^4 = 25-1x16 which is then 25-16 = 9
b) 7^2+4^3 divided by 2^5 so 7^2 is 7x7 which = 49 then 4^3 means 4x4x4 = 64 and 2^5 is 2x2x2x2x2 which equals 32 so
7^2+4^3 divides by 2^5 is 49+64/32 = 49+2 which is 51

Fred is training for a cross-country race. At practice last week, he ran 6.25 miles in 1 1/4 hours. At that speed, how long would it take Fred to run 8.5 miles?

Answers

Answer:

1.7 hours

Step-by-step explanation:

6.25/1.25= 5

8.5/5= 1.7

It would take Fred 1.7 hours to run 8.5 miles.

- If JL = 5x + 2, find JL.

Answers

Answer:

JL= 62

Step-by-step explanation:

27+3x-1=5x+2

3x+26=5x+2

3x+24=5x

24=2x

12=x

now plug in x(which is 12) for JL

5(12)+2

60+2

=62

The measure of the line segment is 62 units if the JL = 5x + 2 and JL = 27 + 3x - 1 from the line segment.

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

It is given that:

JL = 5x + 2

From the line segment:

JL = 27 + 3x - 1

Plug the value of JL in the equation:

5x + 2  = 27 + 3x - 1

After solving:

5x - 3x = 26 - 2

2x = 24

x = 12

JL = 5x + 2

Plug x = 12 in the above equation:

JL = 5(12) + 2

JL = 60 + 2

JL = 62 units

Thus, the measure of the line segment is 62 units if the JL = 5x + 2 and JL = 27 + 3x - 1 from the line segment.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ2

Need help really badly

Answers

Answer:

Step-by-step explanation:

Points: A, C, E, B, D, F

Line: AB

Line segment: AC, CE, CD, DF, DB

Planes: P, M

Rays: CA, DB

Angles: <ACE=90,< CDF= 90

Parallel lines: line w and line t are parallel to each other

Perpendicular lines: EC is perpendicular to AD and FD is perpendicular to CB

write 375 as the product of prime factors

Answers

Answer:

3x5x5x5.  Hope this helps with your question!

Step-by-step explanation:

Which ratio equals 224:32?
5:26
28:4
16:2
5:14

Answers

Answer: 28:4

Step-by-step explanation:

If you divide 224 by 32 you’re going to get 7. If you also divide 28 and 4 you’re going to get 7. Hope that helps!

Answer:

option 28:4 is the answer

4ax+5ax=3ax+6 i have no clue how to figure this out

Answers

Answer:

x= 1/a  and a= 1/x

Step-by-step explanation:

If a = -2, b= -5, and c = -6, then a - b + c=?

Answers

Answer:

a - b + c = - 3

Explain

a = - 2

b = - 5

c = - 6

Now,

a - b + c = - 2 - (-5) + (-6)

= - 2 + 5 - 6

= - 8 + 5

= - 3

4x+3x=7-6 Help pls i cant figure it out

Answers

Answer:

7x=1

Step-by-step explanation:

circle the variables with x 4 and 3 which equals 7 then do 7-6 which is 1 so that gives you your answer at the top:)

equation of horizontal line passing through 2,10

Answers

Answer:

The answer would be Y=10

The correct answer is y=10

What is the solution to equation?

4x+5=2x-3

Answers

4x - 2x = - 3 - 5
2x = - 8
x = - 4

Your cell phone company charges $20 a month plus $0.50
per text message.
A) Fill in the table below with 3 values to show the cost at
zero messages, 50 messages and 100 messages.

Answers

Answer:

20+0.50x

20 dollar fee, 0.50 per text, x represents an unknown number

Step-by-step explanation:

2. If Q is the midpoint of line segment PR then what can you conclude
about segments PQ and QR? *

Answers

Segments PQ and QR are congruent

.......................

What is equivalent to 8x-y+3x

Answers

Answer:

11x-y

Step-by-step explanation:

11x-y

hope l helped

MARKING BRAINLIEST, NOT A TEST! please help.

Find m angle EFG if m angle IFG=150°, m angle EFG=43x-2, and m angle EFI=4x+4.

Answers

Answer:

Step-by-step explanation:

43x-2-4x+4=150

39x+2=150

39x=148

x= 3.7948 degrees

hopefully this is correct. :)    

i can’t figure this out

Answers

The answer should be c
The correct answer is c

This time he did look me in the eyes.(How many verbs does this sentence contain?)

Answers

Sentence contains 2 verbs.

simplify 18r + 6 - 12y + 5r + 9​

Answers

Answer:

[tex]23r-12y+15[/tex]

Step-by-step explanation:

[tex]18r + 6 - 12y + 5r + 9[/tex]

Group the similar terms together:

[tex]18r+5r-12y+6+9[/tex]

Add the variable "r":

[tex]23r-12y+6+9\\[/tex]

Add the numbers:

[tex]23r-12y+15[/tex]

How many decimal places are in the product of 1.91 and 2.3? hurry dont have a lot of time!!

Answers

Answer:

2 and 1

Step-by-step explanation:

1.91 - 2 decimals

2.3 - 1 decimal

Answer:

3

Step-by-step explanation:

1.91*2.3=4.393

the cost of local cheese per kilogram is $10 before tax. if the final price is $10.60 what is the percent of the tax?​

Answers

Answer: 6%

Step-by-step explanation:

10/.06 is 6%, therefore 10.60 would be 6% after tax.

express with exponents: 2xxxmrr​

Answers

Answer:[tex]2x^{3} mr^{2}[/tex]

Step-by-step explanation:

2 * xxx * m * rr

2 [tex]x^{3}[/tex] m [tex]r^{2}[/tex]

This is because [tex]x^{3}[/tex] is the same as multiplying x by its self, three times. The same goes for variables m and r.

B)
Height
D)
17)
Steve is going to buy a bicycle that costs $258.70.
Steve's mother is going to pay for 30% of the bicycle.
His father is going to give him $50.00.
How much will Steve have to pay?



Answers

30% = 0.30

$258.70 * 0.30 = $77.61

$77.61 + $50 = $127.61

$258.70 - $127.61 = $131.09 or 50.67%

Steve will have to pay $131.09 or 50.67% of the bicycle.

All these? Please helppp and I need work

Answers

Sorry my writing is sloppy but I hope this helps (:

(8x^3 - x) - (10x - 5x^2 - 3x^3)
Show your work.

Answers


Let's simplify step-by-step.
8
x
3
−
x
−
(
10
x
−
5
x
2
−
3
x
3
)
Distribute the Negative Sign:
=
8
x
3
−
x
+
−
1
(
10
x
−
5
x
2
−
3
x
3
)
=
8
x
3
+
−
x
+
−
1
(
10
x
)
+
−
1
(
−
5
x
2
)
+
−
1
(
−
3
x
3
)
=
8
x
3
+
−
x
+
−
10
x
+
5
x
2
+
3
x
3
Combine Like Terms:
=
8
x
3
+
−
x
+
−
10
x
+
5
x
2
+
3
x
3
=
(
8
x
3
+
3
x
3
)
+
(
5
x
2
)
+
(
−
x
+
−
10
x
)
=
11
x
3
+
5
x
2
+
−
11
x
Answer:
=
11
x
3
+
5
x
2
−
11
x


Brainliest Please:)

Answer:

-11x-5x^2+5x^3

Step-by-step explanation;

8x^3-x-10x+5x^2+3x^3 (distribute the negative sign)

8x^3-3x^3    -x-10x (combine like terms)

5x^3-11x-5x^2

-11x-5x^2+5x^3 (put in Standard form)

Hope this helps tell me if you have any questions!

Solve the equation
Z+3=-6
Z=????

Answers

Answer:

Z=-9 that is the question

You would subtract 3 from -6 and you would get -9. Z=-9

What property is 5(4+7)=(5x4)+(5x7)

Answers

Answer:

distributive property

Step-by-step explanation:

The perimeter of a movie screen is 76 meters. It is 24 meters wide. How tall is it? meters​

Answers

Answer:

14

Step-by-step explanation:

the perimeter of a rectangle is : 2W + 2L = Perimeter

2*24 + 2L = 76

48 + 2L = 76

2L = 76 -48

2L = 28

L=14

Answer:

14 meters

Step-by-step explanation:

Assuming the movie screen is a rectangle, there are four sides. Two of those sides are 24 meters. Therefore you would add 24 and 24 to get 48 meters. Then you take 76 and subtract 48. The difference of 76 and 48 is 28. To know how tall the movie screen is you need to divide 28 by two (there are two sides). That's where you get 14 from. Hoped this helped.

What factor is used to covert feet per minute into miles per minute

Answers

Answer:

Technical units conversion tool for speed and velocity measures. Exchange reading in feet per minute unit ft/min into miles per hour unit mph as in an equivalent measurement result (two different units but the same identical physical total value, which is also equal to their proportional parts when divided or multiplied).

One foot per minute converted into mile per hour equals = 0.011 mph

1 ft/min = 0.011 mph

Step-by-step explanation:

|2x-1|=5 please help

Answers

Answer:

X=3

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

to check replace x with 3

|2*3-1|=5

|6-1|=5

|5|=5

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