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
mash [69]
3 years ago
9

знайдіть розв'язок системи лінійних рівнянь 10x-6y = 18 9x+6y=39

Mathematics
1 answer:
Katen [24]3 years ago
4 0

Answer:

(-21, -38)

Step-by-step explanation:

Given the simultaneous equation

10x-6y = 18 ... 1

9x+6y=39 ...2

Using the Elimination method

Subtract

10x - 9x = 18 - 39

x = -21

substitute x = -21 into 1;

From 1:

10x-6y = 18

10(-21)-6y = 18

-210 - 6y = 18

-6y = 18+210

-6y = 228

y = 228/-6

y =-38

Hence the solution to the system is (-21, -38)

You might be interested in
There were 42 apples in each crate. 12 such crates of apples were delivered to a factory. 4 apples were rotten and had to be thr
algol [13]

Answer:

50 boxes

Step-by-step explanation:

first we can find how many apples there are

42*12=504

then subtract 4 of the rotten apples

504-4=500

then find how many boxes there can be

500/10=50

7 0
4 years ago
The following formula gives the area of a circle, A, dependent on its radius, r.
Firdavs [7]

Answer:

sqrt(A/pi), -sqrt(A/pi)

Step-by-step explanation:

A=pi*r^2

r^2=A/pi

r=sqrt(A/pi), -sqrt(A/pi)

5 0
3 years ago
Zoe has five pounds of potatoes and she has multiple recipes that requires 3/4 pounds of potatoes. How many recipes will she be
Natasha_Volkova [10]
I think it is 5/1 times 3/4 which is 15/4
3 0
3 years ago
Read 2 more answers
The scale from a playground to a scale drawing of the playground is 4 meters per centimeter.The length of the drawing of the pla
Scilla [17]

Answer:

322.24 meters

Step-by-step explanation:

The scale is 4 meter per centimeter. Multiply 5.3 by 4 to get 21.2 meters. Multiply 5.3 by 4 to get 15.2 meters. Multiply 21.2 by 15.2 to get 322.24

6 0
3 years ago
S=n(a1+an)/2 gives the partial sum of an arithmetic sequence. What is the formula solved for an?
Veseljchak [2.6K]
S = n(a1 + an)/2
2S = n(a1 + an)
2S = na1 + nan
nan = 2S - na1
an = (2S - n a1)/n
6 0
3 years ago
Read 2 more answers
Other questions:
  • How do I convert 7y+5x=(-15) into slope intercept form?
    12·1 answer
  • Natalia is drawing a rectangle. She wants the width to be at least 10 inches and the perimeter to be no more than 72 inches. A.)
    12·1 answer
  • -50 added to three times an unknown number equals -11? What is the solution to the sentence shown?
    10·1 answer
  • Desmond is 3 inches taller than Niki.
    6·1 answer
  • 56<br> х<br> 52<br> Can someone help ?
    7·1 answer
  • BRAINLIEST!!! he dot plot shows predictions for the winning time in the​ 200-meter sprint. The winner finished the race in 22.2
    8·1 answer
  • Classify the triangle by both its
    14·1 answer
  • 80 of ___games is 32 games
    14·1 answer
  • Write (9 + 6i) − (1 + 3i) as a complex number in standard form.
    12·1 answer
  • Subtract.<br> (3x²+2x9) - (4x² - 6x + 3)<br> 4
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!