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
DIA [1.3K]
4 years ago
13

Please answer or I'll kill myse-I need to finish this asap.

Mathematics
2 answers:
SIZIF [17.4K]4 years ago
3 0

2.

   a. y=6x+3

   b. 4x^2=(1/2)^x+1

   c. |9-2x|=3

3.

   a. i dont know how to answer this part

   b. if you plug it into the system 19.8 does not equal 40 and 31.1 doesn't equal 38

Volgvan4 years ago
3 0

Answer:

a) Unique b) not a solution

Step-by-step explanation:

Given is a set of equations

12x+3y=40\\7x-4y=38

The system will have a unique solution if determinant formed by coefficients is not 0.

i.e. \left[\begin{array}{ccc}12&3\\7&-4\\\end{array}\right] \\=-48+21\\=-27

Since this value is not zero the system has a unique solution

b) To find whether a point is a solution, we can substitute that point and see. If the point satisfies both the equations, then it is a solution otherwise not.

12(2.5)+3(-3.4)\\=30-10.2\\=19.8

Since right side not equals 40, the point does not satisfy even the I equaiton.

Hence not a solution

You might be interested in
You are in a bike race. When you get to the first checkpoint, you are 2525 of the distance to the second checkpoint. When you ge
svetoff [14.1K]
1/10 
or maybe even 16?
not too sure though


3 0
3 years ago
PLEASE HELP !! I'LL GIVE YOU BRAINLIEST !!
GuDViN [60]

Answer:

B

Step-by-step explanation:

tan45° = 10/x

=> 1 = 10/x

=> x = 10

=> y^2 = 10^2 + 10^2 = 200

=> y = 100*sqrt(2)

=> b

5 0
3 years ago
Find the value of this expression if x = 7 and y= -2<br> xy^2/9
jeka94

7(−2)^2 /9

7(−2)^2 /9  

= 28 /9

5 0
3 years ago
Read 2 more answers
The table below shows the number of tea bags needed to make different amounts of iced tea. What is the total number of quarts of
never [62]

Answer:

? = 6

Step-by-step explanation:

We can set up a proportion to find the solution.

\frac{4}{16}=\frac{?}{24}

(24)\frac{4}{16}=\frac{?}{24}(24)

6=?

Therefore, 24 tea bags makes 6 quarts of iced tea.

5 0
3 years ago
Find the percent increase in volume when 1 foot is added to each dimension of the prism. Round your answer to the nearest tenth
Rudiy27

Answer:

10

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • In the figure, the three segments are tangent to the circle at points B, F, and G. If y=2/3x, find x, y, and z.
    5·1 answer
  • How many degrees greater is the mean temperature in week 2than in week 1
    12·1 answer
  • What is the difference of -89.16 -153.81
    7·1 answer
  • When multiplying with decimals...
    7·1 answer
  • Use the trend line to predict the wind chill at these wind speeds<br> (9 and 10)
    7·2 answers
  • Stefan sells Jin a bicycle for ​$138 and a helmet for ​$16. The total cost for Jin is 40 ​% of what Stefan spent originally to b
    9·1 answer
  • Please help &gt;.&lt;
    14·2 answers
  • What is this question?
    7·1 answer
  • Grade 5
    11·1 answer
  • Help show works rep by step I’ll give brainly
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!