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
3241004551 [841]
3 years ago
8

Solve each problem by forming a pair of simultaneous equations:

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
7 0

Answer:

5.5, 9.5

Step-by-step explanation:

Let x and y be the numbers

x+y = 15

x-y = 4

Add the two equations together to eliminate y

x+y = 15

x-y = 4

------------------

2x = 19

Divide by 2

2x/2 =19/2

x = 9.5

Now find y

x+y = 15

9.5+y = 15

Subtract 9.5

x = 15-9.5

x =5.5

Komok [63]3 years ago
4 0

Answer:

11/2 and 19/2

Step-by-step explanation:

We have to make a system of equations:

1) X + Y = 15

2) X - Y = 4

Working on the first one:

X = 15 - Y

And now let's plug it in the second one:

(15 - Y) - Y = 4

15 - 2Y = 4

2Y = 11

Y = 11/2

Let's substitute this in one of the two equations:

X + 11/2 = 15

X = 19/2

You might be interested in
Where are the points for<br> Y=-x^2+160x-5000
BaLLatris [955]
None are given.  You have to invent your own points that satisfy the given equation.

Examples:  If x = 0, y = -5000   =>  (0,-5000)
                   If x = 2, y = -(2)^2 + 160(2) - 5000 = 4 + 320 - 5000 => (2, -4676)

and so on.  Find as many such points as you want, using the same approach.

4 0
3 years ago
What does A = and what does B =​
krek1111 [17]

Answer:

Step-by-step explanation:

<UWV = 180° - 50° - 50° ( SUM OF ANGLE IN A TRIANGLE)

<UWV = 80° which is angle A

b = 20 ( isosceles triangle)

8 0
3 years ago
Read 2 more answers
The figure shows two semicircles with centers K &amp; M. The semicircles are tangent to each other at point J, and (QN) ⃗ is tan
kodGreya [7K]

Answer: OQ = 34

Step-by-step explanation:

Please find the attached files for the solution

8 0
3 years ago
Find the product of 2/3x4/7x14/5
Luden [163]
To multiply fractions, the numerator of the product is the product of the numerators, likewise for the denominators. (2/3) x (4/7) x (14/5) = (2 x 4 x14) / (3 x 7 x 5) = (112) / (105) = 1 and 1/15 .
5 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=8%20%5Ctimes%20%20%5Cfrac%7B5%7D%7B12%7D%20" id="TexFormula1" title="8 \times \frac{5}{12} "
Pepsi [2]

Answer:

40/12 = 10/3 or 3  1/3

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • a graph showing inequalities “greater than or equal to” or less than equal to” will use dotted lines. true or false
    10·1 answer
  • What is the fraction 1/6 of 100
    14·1 answer
  • Show that n^2-1 is divisible by 8,if 'n' is an odd positive integer.
    14·1 answer
  • Which of the following statements demonstrates the associative property of multiplication?
    13·2 answers
  • The lifespan of a hamster is 6 years less than that of a rabbit. The lifespan of a raccoon is 3 times that of the hamster. If th
    12·1 answer
  • HELP!!!! MATH! screenshot below
    9·2 answers
  • This is the pic........
    5·1 answer
  • 8. 360 jelly beans were in a jar. 40 of
    6·1 answer
  • I have to pass pls help
    12·1 answer
  • Solve for X. Geometry
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!