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
zheka24 [161]
3 years ago
11

X + 2y = 33 x-y = 11

Mathematics
1 answer:
Tasya [4]3 years ago
7 0

Answer:

x=\frac{55}{3},\:y=\frac{22}{3}

Step-by-step explanation:

Solve by Substitution ;

\begin{bmatrix}x+2y=33\\ x-y=11\end{bmatrix}\\\\\mathrm{Isolate}\:x\:\mathrm{for}\:x+2y=33:\quad x=33-2y\\\\\mathrm{Subsititute\:}x=33-2y\\\\\begin{bmatrix}33-2y-y=11\end{bmatrix}\\\\Simplify\\\begin{bmatrix}33-3y=11\end{bmatrix}\\\\\mathrm{Isolate}\:y\:\mathrm{for}\:33-3y=11:\quad y=\frac{22}{3}\\\mathrm{For\:}x=33-2y\\\\\mathrm{Subsititute\:}y=\frac{22}{3}\\x=33-2\times\frac{22}{3}\\\\x=\frac{55}{3}\\\\x=\frac{55}{3},\:y=\frac{22}{3}

You might be interested in
Find the area of the semi circle with Diameter of 4
daser333 [38]

Answer:

Find the area of the semi circle with Diameter of 4

2π

6.3

Step-by-step explanation:

The area formula for semicircle is (πr^2)/2.

r=2 because radius is half of diameter.

(π(2)^2)/2, 2 squared= 4 and half of it is 2. = 2π

2π would round to the nearest tenths is 6.3.

6 0
3 years ago
Martha estimated there were 96 marbles in a jar for a contest. The actual number of marbles in the jar was 118. What was the per
matrenka [14]
To find percent error, you subtract the actual number from your estimate, take the absolute value, and divide by the actual number.

l 96 - 118 l
l -22 l
l 22 l
l 22 l / 118
0.19%  (this was rounded)

Hope this helps!
3 0
3 years ago
If 2/7 of the animals at a zoo are birds and 1/8 of the birds are flamingos, what portion of the animals at the zoo are flamingo
alex41 [277]
It says it in the question does it not?
7 0
3 years ago
Read 2 more answers
If x^2+1/x^2=3 find the value of x^2/(x^2+1)^2<br> Express answer as a common fraction.<br> Thanks!!
timama [110]

x^2+\dfrac1{x^2}=3\implies x^4+1=3x^2\implies x^4-3x^2+1=0

By the quadratic formula,

x^2=\dfrac{3\pm\sqrt5}2\implies x^2+1=\dfrac{5\pm\sqrt5}2

Then

(x^2+1)^2=\dfrac{25\pm10\sqrt5+5}4=\dfrac{15\pm5\sqrt5}2

\implies\dfrac{x^2}{(x^2+1)^2}=\dfrac{\frac{3\pm\sqrt5}2}{\frac{15\pm5\sqrt5}2}=\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}

Multiply numerator and denominator by the denominator's conjugate:

\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}\cdot\dfrac{15\mp5\sqrt5}{15\mp5\sqrt5}=\dfrac{45\pm15\sqrt5\mp15\sqrt5-25}{15^2-(5\sqrt5)^2}=\dfrac{20}{100}=\dfrac15

3 0
3 years ago
Correct and best explained answer gets brainliest.
Oduvanchick [21]
The answer is b. okay
4 0
3 years ago
Other questions:
  • Can somebody help me please :) i don't understand it
    12·1 answer
  • Enter the cost in the box tickets
    6·1 answer
  • 24​% of a certain​ country's voters think that it is too easy to vote in their country. You randomly select 12 likely voters. Fi
    6·1 answer
  • How do you find slope for y= 4 + 6x
    6·1 answer
  • Find the approximate area of the shade region below, consisting of a right triangle with a circle cut out of it. Use 3.14 as an
    12·1 answer
  • the Garibaldi family drove 400 miles in 7 hours what is the best estimate of the number of miles they drove in 1 hour
    12·2 answers
  • Find the slope between these two points (3,-1) and (-2, 9)<br> 02<br> O-2<br> ol
    15·1 answer
  • So basically you have to: highlight all of the words that can be used to describe the following expression in another color. Sor
    11·1 answer
  • Plsss help i’ll give brainliest if you give a correct answer
    15·1 answer
  • the number of men in a class is 4 less than ten times the number of women. let m represent the number of men and w represent the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!