1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KonstantinChe [14]
3 years ago
13

Brianliest help please

Mathematics
2 answers:
Mamont248 [21]3 years ago
5 0

Answer:

answer is option C

3+7=10

7-3=4

marin [14]3 years ago
4 0

C.

Step-by-step explanation:

x + y = 10

x - y = 4

x = 4 + y

Okay, so now we substitute our third equation into equation 1. Then equation one becomes..

4 + y + y = 10

4 + 2y = 10 ┌(・。・)┘♪

Mk now we subtract 4 from both sides ofc.

2y = 10 - 4

2y = 6

Now divide by 2

y = 3

And now the last one-

substituting y = 3 into equation 3 to find the value of x!

(. ❛ ᴗ ❛.)

x = 4 + y, x = 4 + 3, x = 7

So, that's how I got this answer! (◕ᴗ◕✿)

You might be interested in
Please help with this problem<br><br> 32n^4<br> _____=<br><br> 4n^2
sertanlavr [38]

Answer:

4*n^2 and n cannot equal 0

Step-by-step explanation:

First, since you have a variable int he denominator you need to write on the side that n cannot = 0, you may write it as n=/= 0, so a slash through an equal sign.  You need to include this with your answer.

I'm assuming this is a fraction.The concept is actually pretty simple.  What happens if you have 2/4?  You can simplify it into 1/2.  The concept is basically saying 2/(2*2) and here 2/2 = 1 so the 2 ont he top cancels out with one of the 2s on the bottom.  This canceling only works for multiplication and division.

You can also do this with variables.  x^3/x^7 can be rewritten as (x*x*x)/(x*x*x*x*x*x*x).  here the three on top cancel out three ont he bottom leaving 1/(x*x*x*x) = 1/x^4.  This also works if there are more on top.  x^8/x^2 = x^6.

We do both in your problem.  Let's work with one at a time.  First the numbers.  32/4 = 8  Now the variables n^4/n^2 = n^2 because two of the ns int he numerator canceled the two in the denominator.  Now put them together to have your answer.  4n^2 and you have to add that n=/=0

4 0
4 years ago
PLEASE HELP ASAP, DUE IN AN HR!!!
rusak2 [61]

Answer:

\dfrac38 \text{ sq in}

Step-by-step explanation:

plug 1/4 into the formula for surface area and simplify to get 6/16, or 3/8.

7 0
3 years ago
Read 2 more answers
Frank works at a convenience store. He earns 7.50 per hour when he works during the day. He earns 12.50 per hour when he works a
fredd [130]

Answer:

7.50x + 12.50y = 300

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
A bedroom is 5.2 meters wide. What is its width in feet.
stira [4]

Answer:

17.0604

Step-by-step explanation:

I recommend to round to 17. Hope this helped!

3 0
3 years ago
Read 2 more answers
Please help me, I don't know how to do this...
Lunna [17]

Answer:

  A.  5

Step-by-step explanation:

The triangle will be a right triangle when the side lengths satisfy the Pythagorean theorem: the sum of the squares of the legs is equal to the square of the hypotenuse.

  (x +1)^2 +x^2 = (√61)^2

  x^2 +2x +1 +x^2 = 61 . . . eliminate parentheses

  2x^2 +2x = 60 . . . . . . .subtract 1, collect terms

  x^2 +x -30 = 0 . . . . . divide by 2, subtract 30

  (x +6)(x -5) = 0 . . . . factor the quadratic

  x = -6 or +5

The solution is x = 5.

_____

Side lengths cannot be negative. Solution values are values of x that make the factors zero. x+6=0 when x=-6, for example.

8 0
2 years ago
Other questions:
  • Solve for the values of x in the equation: <br> 2^(x) = 4x.
    11·2 answers
  • An alloy of tin is 14% tin and weighs 22 pounds. A second alloy is 9% tin. How much of the second alloy must be added to the fir
    5·2 answers
  • Write 19,000,000,000 in scientific notation
    5·1 answer
  • Graph
    13·1 answer
  • An angle that measures between 90° and 180° is called a(n)_____ angle.
    9·2 answers
  • The approximate heights of two of the world's tallest mountains are given. Determine which is the taller mountain and by how man
    5·1 answer
  • Please help and thanks whoever helps me!!
    12·1 answer
  • Do 3 questions please 30 points!!!!!!
    9·1 answer
  • HELPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    10·2 answers
  • a jar of coins totalingg 4.58 contains 12 qaurters and five nickles. there are twice as any pennies as there is dimes. how many
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!