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
MrRissso [65]
3 years ago
10

40 Points. Please help, algebra involved. Been stuck for so long!

Mathematics
1 answer:
GenaCL600 [577]3 years ago
6 0
Here is how I did it. I hope this helps!

You might be interested in
A fisherman is sitting 2 feet above the surface of a lake on a boat. The hook on his fishing pole is floating 6 feet below the l
4vir4ik [10]

Answer:

A.12 feet

B. 2 feet>6 feet

Step-by-step explanation:

A. 2 feet x 6 feet = 12 feet

B. 2 feet>6 feet

6 0
2 years ago
Which is defined using the undefined terms point and lines
Luba_88 [7]
You are getting the definition in define
7 0
3 years ago
Read 2 more answers
Two Physics classes at Jefferson High School took the same quiz. Mr. Spears had 20 students in his class with a mean score of 80
andriy [413]

Answer:

The mean score for all students on the quiz was 86.

Step-by-step explanation:

This question is solved by a weighed average.

To find the weighed average, we add the values multiplied by their weight, and after that we divide by the sum of weights.

In this problem, we have that:

Mr. Spears had 20 students in his class with a mean score of 80.

So 80 has a weight of 20.

Mrs. Guyton's class of 30 students had a mean score of 90.

So 90 has a weight of 30.

Overall, what was the mean score for all students on the quiz

M = \frac{80*20 + 90*30}{20 + 30} = 86

The mean score for all students on the quiz was 86.

4 0
3 years ago
A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a
Mariana [72]
<span>A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a new prescription painkiller. She plans to use statistical methods to estimate the mean of the population of relief times. She believes that the population is normally distributed with a standard deviation of 18 minutes. How large a sample should she take to estimate the mean time to within 4 minutes with 97% confidence?
-----
n = [z*s/E]^2
---

n = [2.17*18/4]^2 = 96 when rounded up

</span>
3 0
3 years ago
A group of students attended a math club. Half the students are boys and 4/9 of the boys have brown eyes. What fraction of the g
Daniel [21]

Answer:

2/9

Step-by-step explanation:

The question asks to calculate the number of boys in a group who has brown eyes given the fraction of the boys having the brown eyes.

To do this, we can take any arbitrary value for the total number of students in the math club. Let’s say this is 360 students.

Now, we are told that half of these number are boys. The total number of boys is thus 180 boys. Also, we are made to know that 4/9 of these boys have brown eyes. This means 4/9 of 180 boys have brown eyes. This is numerically equal to 4/9 * 180 = 80 boys.

Hence, the fraction of the math club with brown eyes is 80/360 = 2/9

8 0
3 years ago
Other questions:
  • Pls show me how to do this
    13·1 answer
  • Rationalize the denominator of square root of negative 9 over open parentheses 4 minus 7 i close parentheses minus open parenthe
    10·1 answer
  • What is 423,090,709,000 in word form?
    13·2 answers
  • Which expression is equivalent to 4(m+5)?
    12·2 answers
  • Using your knowledge of circles, label the following on the given diagram: chord, tangent, radius, secant, point of tangency and
    5·1 answer
  • A(r) is a function that gives the area of a circle with radius r. It can be written in equation form as A(r) = 3.14r2. What is t
    14·1 answer
  • Among 500 freshmen pursuing a business degree at a university, 315 are enrolled in an economics course, 213 are enrolled in a ma
    6·1 answer
  • How does dividing mixed number compare with dividing fractions?
    12·1 answer
  • Solve for x.<br> 4x + 6<br> 4x + 6<br> x = [?]
    8·2 answers
  • What happens when a figure is dilated .
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!