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
il63 [147K]
3 years ago
15

Whats the answer to 3y+-4=9y-8

Mathematics
2 answers:
bija089 [108]3 years ago
8 0
 3y+-4=9y-8
-3y      -3y
¯¯¯¯¯¯¯¯¯¯
       -4=6y-8
      +8      +8
¯¯¯¯¯¯¯¯¯¯¯
         4=6y
       ¯¯¯¯¯¯
         6    6


y=2/3
y=0.667
yuradex [85]3 years ago
3 0
3y-3y+-4=9y-3y-8
-4=6y-8
-4+8=6y-8+8
4=6y
y=4/6
y=2/3 (66.6%)

You might be interested in
What does this < > = mean
Ber [7]
Less than greater than equal Too
8 0
3 years ago
Read 2 more answers
Battery packs in electric go-carts need to last a fairly long time. The run-times (time until it needs to be recharged) of the b
pav-90 [236]

Answer:

The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 2, \sigma = 0.33

What is the minimum level for which the battery pack will be classified as highly sought-after class

At least the 100-10 = 90th percentile, which is the value of X when Z has a pvalue of 0.9. So it is X when Z = 1.28.

Z = \frac{X - \mu}{\sigma}

1.28 = \frac{X - 2}{0.33}

X - 2 = 0.33*1.28

X = 2.42

The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours

4 0
3 years ago
Which is equivalent to the following expression (3m^2+2mn-n^2)+(m^2+4mn-n^2)
olga2289 [7]

Answer:

<h3>4m² + 6mn - 2n²</h3>

Step-by-step explanation:

(3m^2+2mn-n^2)+(m^2+4mn-n^2)\\\\=3m^2+2mn-n^2+m^2+4mn-n^2\qquad\text{combine like terms}\\\\=(3m^2+m^2)+(2mn+4mn)+(-n^2-n^2)\\\\=\boxed{4m^2+6mn-2n^2}

4 0
3 years ago
Andre is writing a paper for science class. He can type 30 words per minute.
alisha [4.7K]

Answer:

30/1, 30:1, 30 to 1

Step-by-step explanation:

6 0
3 years ago
A group of 10 friends are in line to see a movie. The table shows how much different groups will pay in all. ​Predict how much t
slega [8]

Answer: Wheres the table

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Write 3 2/4 as a fraction greater than 1
    14·2 answers
  • If a human weighs 115 pounds on Venus, how much would that same human weigh on Mercury?
    14·2 answers
  • Round each decimal to the nearest one 3.872 2.409
    15·2 answers
  • Complete Ratio table
    6·2 answers
  • Determine the recursive function that defines the sequence.
    11·1 answer
  • 90.5 rounded to the nearest one
    7·2 answers
  • A mailbox that is 4 1/2 feet tall casts a shadow that is 6 feet long. At the same time, a nearby ferris wheel casts a shadow 84
    15·2 answers
  • PLEASE HELP ME.. (no links)
    13·2 answers
  • Find the value of x.
    10·1 answer
  • Y = 6x2+36x+59<br><br> What is the vertex form
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!