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
NemiM [27]
3 years ago
7

3a+2b=17, b = 4a -30

Mathematics
2 answers:
Alchen [17]3 years ago
6 0

Answer:

3a+2b=17

soln

3a+2b=17

3a+2b-2b=17-2b

3a=17-2b

3a/3=17/3-2b/3

a=17-2b/3

Murljashka [212]3 years ago
6 0
Hope it helps !!!!!!!

You might be interested in
Somebody please help with this problem
Mrrafil [7]

Step-by-step explanation:

We have been given that AE=BE and \angle1\cong \angle2.

We can see that angle CEA is vertical angle of angle DEB, therefore, m\angle CEA=m\angle DEB as vertical angles are congruent.

We can see in triangles CEA and DEF that two angles and included sides are congruent.

\angle 1\cong \angle 2

AE=BE

\angle CEA\cong\angle DEB or \angle 3\cong \angle 4  

Therefore, \Delta CEA\cong \Delta DEB by ASA postulate.

Since corresponding parts of congruent triangles are congruent, therefore CE must be congruent to DE.

5 0
3 years ago
The daily temperatures in fall and winter months in Virginia have a mean of 62°F. A meteorologist in southwest
marshall27 [118]

Answer:

,, assuming the true mean temperature 62 degrees Fahrenheit there is a 0.1% probability that the null hypothesis is true by chance alone

8 0
3 years ago
Read 2 more answers
In Exercise sketch the graph of the function.<br> f(x) = ex + 3
Tju [1.3M]

Answer:

f(x) = e^x + 3

Step-by-step explanation:

We are given the following function in the question:

f(x) = e^x + 3

We have to graph this function.

Properties of given function are:

  • e is a constant and have a value of e = 2.718281828....
  • The function does not pass through origin
  • At x = 0, f(x) = 4
  • The domain for the given function is all real numbers.
  • The range of the given function is (3, \infty)

The attached image shows the graph for given function.

5 0
3 years ago
Please help! thanks so much​
Stels [109]

Answer:

See below.

Step-by-step explanation:

First, we can see that \lim_{x \to 2}  (f(x))= -1.

Thus, for the question, we can just plug -1 in:

\lim_{x \to 2} (\frac{x}{f(x)+1})=\frac{(2)}{-1+1}  =und.

Saying undefined (or unbounded) will be correct.

However, note that as x approaches 2, the values of y decrease in order to get to -1. In other words, f(x) will always be greater or equal to -1 (you can also see this from the graph). This means that as x approaches 2, f(x) will approach -.99 then -.999 then -.9999 until it reaches -1 and then go back up. What is important is that because of this, we can determine that:

\lim_{x \to 2} (\frac{x}{f(x)+1})=\frac{(2)}{-1+1}  = +\infty

This is because for the denominator, the +1 will always be greater than the f(x). This makes this increase towards positive infinity. Note that limits want the values of the function as it approaches it, not at it.

4 0
3 years ago
Prove that<br> cos^4∆ - sin^4∆ = 2cos^2∆ - 1
GarryVolchara [31]

\cos^{4} x-\sin^{4} x\\\\=(\cos^{2} x+\sin^{2} x)(\cos^{2} x-\sin^{2} x)\\\\=\cos^{2} x-\sin^{2} x\\\\=\cos^{2} x-(1-\cos^{2} x)\\\\=2\cos^{2} x-1

3 0
1 year ago
Other questions:
  • Just look at the pic and I'll give you points if you answer it Thanks bye
    14·1 answer
  • Give the opposite of each number. a. 3 b. –9 c. –5 d. 12
    13·2 answers
  • PLEASE HELP! I AM HAVING PROBLEM WITH THESE SET OF PROBLEMS!!! IF YOU GET THEM CORRECTLY YOU WILL EARN 15 POINTS!!!
    13·2 answers
  • IHELP if 1 out of 5 animals are cats then how many cats are there in an ecosystem of 200 animals???​
    5·1 answer
  • When D is placed on this square, what will the perimeter of the square be?
    7·1 answer
  • Marlowe loves to draw. She wants to refine her skills and start taking drawing lessons at a local art studio. The table shows th
    5·1 answer
  • Pls help I have a test today in math :( no 1 would help me pls try to help and its in 12:20 so I have a lot of time but pls help
    5·2 answers
  • What has to happen for scales to be balanced?​
    11·2 answers
  • Anna graphs y=4/5x+5 as shown. Select the statements that identify errors,if any,on Anna’s graph
    8·2 answers
  • 4√5x - √80x+√45x <br> Help please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!