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
Helen [10]
3 years ago
13

-3x+3y=9 2x−7y=−14 ​

Mathematics
1 answer:
nignag [31]3 years ago
6 0
Step: Solve
−
3
x
+
3
y
=
9
for x:
−
3
x
+
3
y
=
9
−
3
x
+
3
y
+
−
3
y
=
9
+
−
3
y
(Add -3y to both sides)
−
3
x
=
−
3
y
+
9
−
3
x
−
3
=
−
3
y
+
9
−
3
(Divide both sides by -3)
x
=
y
−
3

Step: Substitute
y
−
3
for
x
in
2
x
−
7
y
=
−
14
:
2
x
−
7
y
=
−
14
2
(
y
−
3
)
−
7
y
=
−
14
−
5
y
−
6
=
−
14
(Simplify both sides of the equation)
−
5
y
−
6
+
6
=
−
14
+
6
(Add 6 to both sides)
−
5
y
=
−
8
−
5
y
−
5
=
−
8
−
5
(Divide both sides by -5)
y
=
8
5

Step: Substitute
8
5
for
y
in
x
=
y
−
3
:
x
=
y
−
3
x
=
8
5
−
3
x
=
−
7
5
(Simplify both sides of the equation)

Answer:
X=-7/5 and y= 8/5
You might be interested in
A car travels at 4,400 feet per minute. The radius of each tire on the car is 1 foot . How many revolutions does one of these ti
jeyben [28]
700 rotations
If the radius is 1 foot, the diameter is 2 feet (twice the radius). The circumference of a circle is pi times the radius. Using 22/7 as pi, the circumference of each tire is (22/7)*2 feet. That is the same as 44/7 feet.
If the car is going 4400 feet per minute, the tires will "rotate 4400 feet from the circumference" - if you know what I mean. The tire completes one rotation every 44/7 feet. So, in 4400 feet it will complete (4400)/(44/7) feet. That is equal to 4400*7/44. Put that in a calculator and you get: 700.
**
7 0
3 years ago
Use what you have learned to find the values of x or y <br> 54<br> X=
babunello [35]

Answer:

∠x = 72°

Step-by-step explanation:

since two sides are equal, their opposite angles are equal.

Then the upper angle is also equal to 54°.

All triangle angles add up to 180°.

∠x = 180 - 54 - 54 = 72°

3 0
3 years ago
Hey, please I need help with this
gavmur [86]

Answer:

∠CGD is 52°

Step-by-step explanation:

∠AGB is 90° and its corresponding ∠EGD is also 90°

90+38= 128

180-128= 25

5 0
3 years ago
In the figure shown, what is the measure of angle x?
mojhsa [17]
Angles in a triangle must add up to 180, so the missing angle inside the triangle is 180 - (70 + 40), which is 70.

Angles on a straight line (i.e. the line BD) must add up to 180, and because we know part of that angle is 70, x must be 180 - 70, which is 110.

Hence, x is 110 degrees.
5 0
3 years ago
Read 2 more answers
......................
FinnZ [79.3K]

Answer:

Value of opposite ∠2 = 120°

Step-by-step explanation:

Given question:

Quadrilateral inscribed in a circle

Value of ∠1 = 60°

Find:

Value of opposite ∠2

Computation:

In Quadrilateral inscribed in a circle, sum of opposite angle is 180

So,

Value of ∠1 + Value of ∠2 = 180°

60 + Value of ∠2 = 180

Value of ∠2 = 180 - 60

Value of ∠2 = 120

Value of opposite ∠2 = 120°

4 0
3 years ago
Other questions:
  • In triathlons, it is common for racers to be placed into age and gender groups. Friends Leo and Mary both completed the Hermosa
    5·1 answer
  • What is <br> 0.083 repeating as a fraction
    9·2 answers
  • What are the first four terms if the sequence represented by the expression n (n-1) -4?
    12·1 answer
  • I enter the bedroom. there are 34 people. i kill 30 people. how many people are there in bedroom​
    12·2 answers
  • WILL GIVE BRAINLEST Find the measure of the arc or central angle indicated. Assume that lines which
    5·1 answer
  • What is the area of the real object that the scale drawing models? sike i need help if someone wants to help me for 1-2 hours il
    14·1 answer
  • Please help me with this !
    14·1 answer
  • Which expression is equivalent to 4(x-3) ?
    7·1 answer
  • Ann's Bakery bakes 450 loaves of bread in 3 days. Mark's Bakery bakes 560 loaves of bread in 4 days. Which bakery bakes bread at
    11·2 answers
  • Please help me with this:(((((​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!