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
abruzzese [7]
4 years ago
14

How to solve 11x-13y=89 and -11x+13y=107 by substitution

Mathematics
1 answer:
enyata [817]4 years ago
8 0
\left\{\begin{array}{ccc}11x-13y=89&/+13y\\-11x+13y=107&/\cdot(-1)\end{array}\right\\\\\left\{\begin{array}{ccc}11x=13y+89\\11x-13y=-107\end{array}\right\\\\substitute:\\\\(13y+89)-13y=107\\13y-13y+89=107\\89=107-FLASE\\\\Answer:No\ solution\ (x;\ y\in\O)
You might be interested in
So in English in Quarter 1 i got a B. then for Quarter 2 i got a C+.
Assoli18 [71]
What's the percentages?? I need to know that first
8 0
3 years ago
a positive number is 5 times less than another positive number. Six times the lesser number plus 3 times the greater is 3. Find
IgorLugansk [536]
<h2>Greetings!</h2>

Answer:

One number is \frac{5}{7} and the other number is \frac{1}{7}

Step-by-step explanation:

Let x be the smaller number and y be the bigger number.

x = x

y = 5x

6x + 3y = 3

6x + (3 * 5x) = 3

6x + 15x = 3

(÷3)

2x + 5x = 1

7x = 1

x = \frac{1}{7}

6x + 3y = 3

6(\frac{1}{7}) + 3y = 3

\frac{6}{7} + 3y = 3

3y = 3 - \frac{6}{7}

3y = \frac{15}{7}

Divide both sides by 3 to get 1y:

y = \frac{5}{7}

So one number is \frac{5}{7} and the other number is \frac{1}{7}


<h2>Hope this helps!</h2>
5 0
3 years ago
If two sides of a triangle are 9cm and 15cm in length, which COULD be the measure of the third side?
MArishka [77]
The lemght could be 15 because a triangle has two long sides and one short one and the two are equivalent
5 0
3 years ago
Si la hipotenusa y un cateto de un triángulo rectángulo miden 14 m y 7 m, ¿cuánto medirá el área de otro
Reika [66]

<span>Los minerales se consideran gemas si son raros , clara y brillante.
</span>

8 0
3 years ago
How do I solve this math question? give full explanation using a formula. ​
lukranit [14]

Answer:

30 short cakes

Step-by-step explanation:

25ml = 10ml + 10ml +5ml

each 10ml of milk can make us 12 short cakes

we can two 10ml of milk (20ml) which can make us 24 short cakes.

but we have 25 ml of milk so how much does 5ml of milk give us if 10ml of milk gives us 12 short cakes ?

5ml makes us 6 short cakes. 24 short cakes plus 6 short cakes =30 shortcakes.

25ml of milk =10ml(12shortcakes)+ 10ml(12 shortcakes)+5ml(6 shortcakes)

6 0
3 years ago
Other questions:
  • Don't get any of these
    11·1 answer
  • Number 4 by the way.
    10·2 answers
  • Given a circle with a radius of 6, what the the length of an arc measuring 30 degrees
    9·1 answer
  • A scale drawing of a rectangular room has a length of 6 inches and a width of 4 inches. The drawing uses a scale of 1 inch to 3
    8·1 answer
  • A plane can fly 325 mph in still air. If it can fly 190 downwind in the same amount of time it can fly 135 miles upwind, find th
    10·1 answer
  • Kelly is 8 years younger than her sister. The sum of her age is 44 years. How old is jelly and how old is her sister?
    6·1 answer
  • Samantha wants to know whether the food she serves in her restaurant is within a safe range of
    12·1 answer
  • Help! <br> serious answers only please!!!
    11·2 answers
  • I need help on my math homework.
    12·2 answers
  • Blankdsffffffffffffffffffffffffffffffffffffffffffffffdsf sdffffffffffff sdf
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!