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
jolli1 [7]
3 years ago
15

Help with this math question

Mathematics
1 answer:
Art [367]3 years ago
5 0
Answer: option J: 128 joules

Explanation:

1) From the table you try to find which relation best fits the data.

2) Your best first assumption is that the data may fit a proportional relation.

3) To prove that you find the ratio of Energy ouput to Amount of chemicals.

Doing that you find:
 20        32         48       60
----- =  ------- =  ------ = ------ =  4
  5          8           12      15


4) Then you have found a direct relation whose ratio is 4 joules / mol. So, you can apply that constant to the number of moles given:

Energy = 4  joules / mol × 32 mol = 128 joules
You might be interested in
Solve the triangle, AMDM
krok68 [10]

Answer:

B

Step-by-step explanation:

You are given two sides and the included angle, so you need to use the law of cosines.

c² = a² + b² - 2ab cos C

c² = 12² + 13² - 2(12)(13)cos 134°

c² = 313 - 312(-0.6947)

c² = 529.733

c = 23.016

Now use the law of sines.

c/sin C = a/sin A

23.016/sin 134° = 12/sin A

sin A = 12 × sin 134° / 23.016

sin A = 0.37504

A = 22.03°

B = 180° - 134° - 22.03°

B = 23.97°

m<A = 22°; m<B = 24°; c = 23 km

Answer: B

6 0
1 year ago
Choose the graph that represents the following system of inequalities: y ≤ −3x + 1 y ≤ 1 over 2x + 3 In each graph, the area for
Vanyuwa [196]

The graph that represents the inequality has been shown in the attachment.

<h3>How to solve for the graph</h3>

We have these equations

y ≤ −3x + 1

y ≤ x + 3

We remove the inequality sign from both of these equations

y = −3x + 1

y = x + 3

−3x + 1  = x + 3

such that

x = -0.5

we use this value for x in any of the equations

x + 3 = -0.5 + 3

= 2.5

the point of intersection is at 2.5, -0.5

we test for the origin. 0,0

3x + 1

= 3*0 + 1

= 1

for  x + 3

0+3 = 3

This is 0≤1 and 0≤3

Hence the graph should be shaded to the origin.

Read more on a graph here: brainly.com/question/14030149

#SPJ1

7 0
1 year ago
When finding the length of the hypotenuse of a right triangle why might you approximate the answer?​
sammy [17]

Answer:

Because the hypotenuse might not be a perfect square

Step-by-step explanation:

8 0
2 years ago
-7 x (4+8) = ?? Please a aswer?
Colt1911 [192]
The answer would be -84.

Here are the steps I did.

1. Simplify 4 + 8 to 12 ( -7 * 12 )

2. Now lastly simplify and u get -84.
5 0
3 years ago
Read 2 more answers
3w = 30 .... What is the solution of this equation?
uranmaximum [27]

Answer:

3w = 30

w = 30/3

therefore w = 10

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of x in the equation x – y = 30, when y = 15?
    6·2 answers
  • Best estimate for 1kg =1,000g
    7·1 answer
  • In the city election, the mayor received 0.79 of the votes. What percentage of the votes did the mayor receive ?
    11·2 answers
  • student tickets for the football game cost $12 each and adult ticket cost $20 $1,720 was collected for the 120 ticket sold at la
    14·2 answers
  • . Explain why projectile motion, such as kicking a ball off the top of building, has a curved path. Identify the two forces invo
    11·1 answer
  • A line segment has (x1, y1) as one endpoint and (xm, ym) as its midpoint. Find the other endpoint (x2, y2) of the line segment i
    12·1 answer
  • What is the solution to the system of equations graphed below?
    10·1 answer
  • Help I will mark brainlist
    15·1 answer
  • Can someone explain to me what it means to be marked as branliest? &amp; what it does ?
    13·1 answer
  • Please help me please help me please help​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!