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
KengaRu [80]
3 years ago
11

How to substitute equations for solutions 3x-2y=9 Y=2x-7

Mathematics
2 answers:
miss Akunina [59]3 years ago
7 0
First I would rewrite it so all the x's and y's are in the same places

3x-2y=9
-2x+y=-7

Then multiply the bottom one by 2
-4x+2y=-14

Then add the equations
   3x-2y=9
+-4x+2y=-14
-------------------
-x=-5 or x=5

The substitute this into one of the original equations to solve for y.

y=2(5)-7
y=3

So your answer is x=5 and y=3 or (5,3)

Hope this helps.

xxTIMURxx [149]3 years ago
5 0

3X-2(2X-7)=9

3X-4X+14=9

-X=-5

X=5

You might be interested in
The median of a continuous random variable having distribution function F is that value m such that F(m) = 1/2 . That is, a rand
neonofarm [45]

Answer:

Step-by-step explanation:

To find median and mode for

a) In a uniform distribution median would be

(a+b)/2 and mode = any value

b) X is N

we know that in a normal bell shaped curve, mean = median = mode

Hence mode = median = \mu

c) Exponential with parameter lambda

Median = \frac{ln2}{\lambda }

Mode =0

7 0
3 years ago
Step 2: Radii OK and NL are perpendicular to OM because of the radius-tangent theorem. By definition of perpendicular, angles KO
solong [7]

Answer:

Angle Angle Angle (AAA) property

Step-by-step explanation:

A right angled triangle is a triangle that has one of its angles to equal 90^{0}. It could be in the form of an isosceles triangle or an acute angled triangle.

The given question compares the congruence properties of two triangles, KOM and LNM.

Thus,

<KOM = <LNM (right angle theorem)

<LMN = <KMO (common angles to both triangles)

⇒ <OKM = <NLM (property of a triangle i.e sum of angle in a triangle is 180^{0})

ΔKOM = ΔLNM (congruence property)

Therefore, by angle angle angle (AAA) congruence property, the two triangles are similar.

7 0
3 years ago
Solve the inequality and graph its solution: 2t+1&gt;9or -18&gt;5t-3​
Strike441 [17]

Answer:

ifyfyfjfjfivkhbkbmhkbkvkvk

6 0
2 years ago
The scale factor of figure JKLMN to figure PQRST is 3:2. If KL = 9 cm and MN = 15 cm, what is the length of side QR?
Alecsey [184]
The length of side QR is 6 cm
5 0
3 years ago
Can someone help me with number 4 and 12
Aliun [14]

Answer:

4 .c is the right answer

Step-by-step explanation:

16=100%

20÷16=1.25 or 125%

125%-100%= 25% increase

7 0
3 years ago
Read 2 more answers
Other questions:
  • Sam and Jon are attending the same summer camp. The camp is 293 miles away from each of their homes. The graph shows Jon's const
    13·1 answer
  • The temperature went from -16°F to 7°F. What was the change in temperature?
    5·1 answer
  • 26% percent of a number is what fraction
    15·1 answer
  • Choose the different ways that a graph can be misleading.
    10·1 answer
  • Put (x+4)^2+(y+3)^2=25 into general form
    11·1 answer
  • What's 4 ÷ 9 and 9 ÷ 4 write each quotient as either a fraction or mixed number help me​
    8·1 answer
  • What is the average of 36,300
    12·2 answers
  • Who ever comments first gets the brillient if you dont get to answer ill make another
    15·2 answers
  • What is the area of the figure below?<br><br><br><br> 15 in 2<br> 20 in 2<br> 30 in 2<br> 25 in 2
    8·1 answer
  • Y+2=-(x+4) in slope intercept form
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!