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
marissa [1.9K]
3 years ago
9

Joshua uses his thermometer and finds the boiling point of ethyl alcohol to be 75o C. He looks in a reference book and finds tha

t the actual boiling point of ethyl alcohol is 80oC. What is his percent error?
Mathematics
2 answers:
Crazy boy [7]3 years ago
5 0

Answer:

the percent error is 6.25%

Step-by-step explanation:

The computation of the percent error is shown below:

Percent error is

= (Experimental value - accepted value) ÷ (experimental value) × 100

= (80 degrees - 75 degrees) ÷ (80 degrees) × 100

= (5 degrees) ÷ (80 degrees) × 100

= 0.0625 × 100

= 6.25%

hence, the percent error is 6.25%

We simply applied the above formula so that the correct value could come

And, the same is to be considered

Mekhanik [1.2K]3 years ago
5 0

Answer:

6.25

Step-by-step explanation:

I just did this

You might be interested in
Here is another math question -5/3*(-1/8)
arsen [322]
The answer is 5/24 
I hope that helped!^o^
6 0
4 years ago
Solve for x and y in the system of equation<br>3x²+4y=17 <br>2x²+5y=2<br>I'll mark brainliest​
Novay_Z [31]

Answer:

x=\pm \sqrt{11} \\y=-4.

Step-by-step explanation:

\left \{ {{3x^2+4y=17} \atop {2x^2+5y=2}} \right. \\\\Then\\\\\left \{ {{2 \times (3x^2+4y)=2 \times 17} \atop {3\times(2x^2+5y)=3\times2}} \right. \\\\\left \{ {{6x^2+8y=34 \quad (1)} \atop {6x^2+15y=6\quad (2)}} \right.\\\\(1)-(2) \Rightarrow -7y=28 \Rightarrow y =-4.\\Since \: \:  2x^2+5y=2 \Rightarrow 2x^2=2-5y\\\Rightarrow 2x^2=2+20=22\\\Rightarrow x^2=22:2=11\\\Rightarrow x=\pm \sqrt{11}.

7 0
3 years ago
What is the simplified form of 3/4x+3+21/8x^2-14x-15
creativ13 [48]

Solution:

We have been asked to find the simplified expression of

3/4x+3+21/8x^2-14x-15=\frac{3}{4x+3} +\frac{21}{8x^2-14x-15}\\ \\ \text{We will have to make the denominator equal to add}\\ \\ \ 8x^2-14x-15=8x^2+6x-20x-15\\ \\ \ =2x(4x+3)-5(4x+3)=(4x+3)(2x-5)\\ \\  \frac{3}{4x+3} +\frac{21}{8x^2-14x-15}=\frac{3}{4x+3} +\frac{21}{(4x+3)(2x-5)}\\ \\ =\frac{3(2x-5)+21}{(4x+3)(2x-5)}\\ \\ =\frac{6x-15+21}{(4x+3)(2x-5)} \\ \\ =\frac{6x+6}{(4x+3)(2x-5)} \\

6 0
3 years ago
Need some serious help ASAP (will give brainliest)
abruzzese [7]
I could be wrong (and I apologize if I am), but I believe these are the answers to your questions.

1.) Angle 4
2.) Angle 6
3.) Angle 10
4.) 30 degrees
5.) 48 degrees
6.) 55 degrees
7.) 68 degrees
8.) 148 degrees
9.) 102 degrees
10.) 38 degrees

If I turn out to be correct, then I am happy I was able to help you.
3 0
3 years ago
An = an-1 + <br><br>What number belongs in the blank space in the recursive formula?
-Dominant- [34]
Answer: D) 8

-------------------------

The number outside the (n-1) term, which is 8, is the common difference. It tells us how much to increment by each time. In this case, the next term is found by adding 8 onto the previous term. That's exactly what a_n = (a_{n-1}) + 8 is saying.
3 0
3 years ago
Other questions:
  • What is 3 square root 5 subtract 2 square root 20
    11·1 answer
  • What is 52+ 20is 52 +_tens
    7·1 answer
  • Y = -7x + 8 <br> Write in standard form
    15·1 answer
  • Use place-value blocks to add 0.38 +0.46
    5·2 answers
  • What is the volume of the right prism?<br><br> A. 17 in3<br> B. 68 in3<br> C. 108 in3<br> D. 168 in3
    6·2 answers
  • Draw a triangle and label it ABC. If angle A is equal to 3x, angle B is equal to 2x, and angle C is equal to 55 degrees, what is
    5·1 answer
  • It takes 31 pounds to plant 5 acres how many pounds are needed to plant 1 acre?
    11·1 answer
  • Which statement explains how to correct the error that was made?
    10·1 answer
  • Is -3 linear pls help
    5·1 answer
  • What is expression of 5a + b + 0
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!