Mathematics High School

2x-y=60
6y=x
Solve the system using substitution. Check your solution.

Answers

Answer 1

Answer:

[tex]x = \frac{360}{11} [/tex]

[tex]y = \frac{60}{11} [/tex]

Step-by-step explanation:

Since 6y=x plug 6y in for x on the top equation.

[tex]2(6y) - y = 60[/tex]

[tex]12y - y = 60[/tex]

[tex]11y = 60[/tex]

[tex]y = \frac{60}{11} [/tex]

Plug y=60/11 into 6y=x

[tex]6( \frac{60}{11} ) = x[/tex]

[tex] \frac{360}{11} = x[/tex]

Plug 360/11 into 2x-y=60

[tex]2( \frac{360}{11} ) - \frac{60}{11} = 60[/tex]

[tex] \frac{720}{11} - \frac{60}{11} = 60[/tex]

[tex] \frac{660}{11} = 60[/tex]

The identity is true

Related Questions

Need help. Whixh of these are functions?​

Answers

Answer: C and D are functions.

Step-by-step explanation:

Can you simply these fractions?

Answers

Answer:

2/7

3/4

2/3

1/2

1/10

5/7

3/8

1/9

2/5

1/5

math work pls help :)​

Answers

Answer:

SAS because there is only one angle but there are two sides

Alina can blow 48 balloons in 16 minutes. What is the unit rate of blowing per minute?

Answers

Answer:

3 balloon

Step-by-step explanation:

48 divide by 16

Write an exponential function whose graph passes through the points (0,-2) and (2,-50)

Answers

Answer:

first sub in (0,-2) to get

-2 = ab^0, but b^0 = 1

so a=-2

so far we have

y = -2b^x

now use the other point (2,-50)

-50 = -2(b^2)

b^2 = 25

b= ±5

however in exponentional equations the base is usually positve, so now you have

y = -2(5^x)

sub in x=-2 and you got it.

Step-by-step explanation:

hope it helps..

Pour teacher has disabled instant marking. Your marks will appear after the due date.
y is inversely proportional to x.
When y = 7, x = 9
a) Work out an equation connecting y and x.
b) Work out the value of y when x = 21.
How do i find k?

Answers

Answer:

a) y = 63/x

b) y = 3

Step-by-step explanation:

Inverse proportionality between two variables means that if one of them increases, then the other one decreases.

These type of relationships can be written as:

y = k/x

Now we know that when y =7, x = 9

Then we can replace these two values and find the value of k.

7  =k/9

7*9 = k

63 = k

The our relationship is:

y = 63/x

This is the solution to a).

Now let's go with b)

We want to find the value of y when x = 21. then we just need to replace x by 21 in the equation "y = 63/x"

We will get:

y = 63/21 = 3

When x = 21, y is equal to 3.

tan(A+B)=tanA+tanB/1—tanAtanB​

Answers

The question is not correct.

help me with this, please!!!

Answers

Answer:

17 is already a simplest form so you can do a decemil form 0.17

Step-by-step explanation:

Answer:

10.68 miles

Step-by-step explanation:

17 mile radius = 34 mile diameter

34 mile diameter x 3.14 = circumference = 106.82 miles

Pi/5 radians = 36 degrees

36(106.82)/360 = 10.68 miles

adding and subtracting polynomials

Answers


Green Leaf Lawn Care had 64 customers under contract at the start of the year. The company's owner expects his new radio advertisements will attract 2 new customers every week.
the radio commercials produce new customers exactly as the owner expects, which of these equations represents the number of customers ( Green Leaf Lawn Care will have after w weeks

Answers

Answer:

C. c = 64 + 2w

Step-by-step explanation:

You're starting with 64 customers and you're gaining 2 for each week.

good luck, i hope this helps :)

Provide
an appropriate response.
9) knight may win a tournament. He may also fail to win the love of his lady. Are these events
overlapping? Why or why not?
A) Yes, because not all ladies love all winners
B) No, because all ladies love all winners
C) Yes, because some ladies love winners
No, because not all ladies love all winners

Answers

C, I think I’m not completely sure though

Solve for x
4 - ( 2x - 2) + 3x = 4(x + 5) - 3(x-2)-10

Answers

Step-by-step explanation:

4 + x + 3x = 4 ( 5x ) - 3 ( x ) - 10

4 + x + 3x = 4 + 5x - 3 + x - 10

x + 3x + 5x + x = 4 + 4 - 3 - 10

10x = 21

10x % 10 = 21 % 10

x = 2,1

Mother mixed cream and milk in the ratio of 2 parts cream to 3 parts milk. How many cups of each are needed to have 80 cups of mixture?​

Answers

Answer:

Cream = 32 cups

Milk = 48 cups

Step-by-step explanation:

Here, we want to share the ratio

The ratio here is 2:3

cream: milk

For cream;

2/5 * 80 = 32 cups

For milk;

3/5 * 80 = 48 cups

If mABD = 28° and mDBC = 134°, find mABC.

Answers

Answer:

∠ABC = 162

Step-by-step explanation:

Since you have ∠ABD and ∠DBC, add the two angles to find ∠ABC.

28 + 134 = 162

The answer to your question is 162!

Please help. Image below.

Answers

Answer:

a) 78

b) 1275.....

Step-by-step explanation:

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

HELP PLEASE CHECK MY ANSWER!!!

Answers

Answer:

yo que se soy aprendis apenas loco

Answer:

Yes this one is correct and you had solved it right there's nothing to fix its correct

Step-by-step explanation:

1. bottom its supose to be below -16 witch is the bottom on both of the starts where the line starts

2.go up to number 8 on eight.

3.  on -3 and on 3 its correct

Given the points below, find XY. Round to
the nearest hundredth.
X(-9, 2) and Y(5,-4)
XY =

Answers

Answer:

15.23

Step-by-step explanation:

WILL GIVE BRAINLIESTTT

Answers

Answer: ALL CREDIT TO THE GUY BELOW IT'S C

Sp-by-step explanation:

Answer:

k=0.12

Step-by-step explanation:

24 (1 point)
ASQR is similar to ASPT. Which choice below lists two corresponding sides?
a
b
PS and RS
TP and RQ
SP and SR
QS and PT
c
d
>
Next Page
Back

Answers

Answer:

Step-by-step explanation:

Answer: tp and rq

Step-by-step explanation:

PLS HELP WILL MARK BRAINLIST

Answers

Answer:

T=39.46

Step-by-step explanation:

13(t+13)=676

multiply 13 by t and by 13

then you will have 13t + 169=676

isolate the variable

13t + 169= 676

substract 169 from both sides

13=507 divided both side by 13

T=39

What is 3/2 to the fifth power in standard form?

Answers

Answer:

3/2 *3/2 *3/2 * 3/2* 3/2= 243/32

Step-by-step explanation:

sorry if this is incorrect :9

ty for reading :9

Graph the equation
y = -x + 3​

Answers

Answer:

Step-by-step explanation:

please help i have no clue how to solve

Answers

Answer:

im sorry i dnt know i try doing these things on my own but i cant lol :(

Step-by-step explanation:

Answer:

1. doesn't

2. satisfy

Step-by-step explanation:

(29 points!!!)Enter the correct answer.
in the rectangle ABCD, BD =96. What is the length of ED?
Diagram not drawn to scale.
Numeric answer only Do NOT include units (degrees, inches, feet, etc).

Answers

Answer:

48

Step-by-step explanation:

Do 96/2=48

How many four-digit numbers can be made from the numerals 7, 6, 5, and 3?

24
4
12

Answers

Answer:

12 different four digit numbers

Step-by-step explanation:

Answer:

24

Step-by-step explanation:

permutations! order required

P(4,4) = [tex]\frac{4!}{(4-4)!} = \frac{4!}{0!} = \frac{24}{1}[/tex]

A local diner uses 4 2/3 pounds of meat to make five hamburgers. How much meat is used to make one hamburger?

Answers

Answer:14/15 pounds of meat

Step-by-step explanation:

SO, 4 2/3=14/35 HAMBURGERS ARE MADE BY USING 14/3 POUNDS OF MEAT1 HAMBURGER IS MADE BY USING 14/3×1/5 OR,14/15 POUNDS OF MEAT.BASICALLY THE ANSWER IS:14/15 pounds of meat is used to make one hamburger.

NEED HELP ASAP 60 POINTS!!!!!!!​

Answers

Answer:

Quintic monomial - zym^2

Quintic polynomial - 2x^5 + 8x^4 - 6x^2 +5x...

Quartic trinomial  - 2x^4 -  5y +2

Quadratic trinomial - z+xy-1

I hope im right!!

Suppose that 62% of people own dogs. If you pick two people at random, what is the probability that they both own a dog? Give your answer as a decimal (to at least 3 places) or fraction

Answers

Answer:

0.62*0.62=0.3844

Step-by-step explanation:

Add the expressions (5x2y3z)and(-7x2y3z).
A.-12x2y3z
B.-2x2y3z
C.2x2y3z
D.12x2y3z​

Answers

Answer:

B

Step-by-step explanation:

can somebody help me please ​

Answers

45t+45t+45t=x
That is the answer I hope that helps
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