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
pychu [463]
3 years ago
7

Can you please help me on 6(a-7)=-7(a-7)

Mathematics
1 answer:
wolverine [178]3 years ago
5 0

Answer:

a=7

Step-by-step explanation:

6a-42=-7a+49

(add 7a to 6a)

13a-42=49

(add 42 to 49)

13a=91

(divide 91 by 13)

a=7

You might be interested in
Brainliest help please
anzhelika [568]

Answer:

9x5=45 D is ur answer

Step-by-step explanation:

brainliest???

7 0
3 years ago
Read 2 more answers
Below are the steps to solve an equation:
otez555 [7]

Answer:

x-5=-3

Step-by-step explanation:

|x-5|+2=5

|x-5|=5-2

|x-5|=3

x-5=±3

so x-5=-3 is a correct step.

4 0
3 years ago
In a randomly selected sample of 1169 men ages 35–44, the mean total cholesterol level was 210 milligrams per deciliter with a s
Aneli [31]

Answer:

The highest total cholesterol level a man in this 35–44 age group can have and be in the lowest 10% is 160.59 milligrams per deciliter.

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 = 210, \sigma = 38.6

Find the highest total cholesterol level a man in this 35–44 age group can have and be in the lowest 10%.

This is the 10th percentile, which is X when Z has a pvalue of 0.1. So X when Z = -1.28.

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

-1.28 = \frac{X - 210}{38.6}

X - 210 = -1.28*38.6

X = 160.59

The highest total cholesterol level a man in this 35–44 age group can have and be in the lowest 10% is 160.59 milligrams per deciliter.

5 0
3 years ago
How do solve this problem
Tanzania [10]
Multiply the first equation by 3
21x+15y=-6

Add this to the second equation
21x+15y=-6
-21x-15y=6
0+0=0

True

Final answer: Infinitely Many Solutions (they are coinciding lines)
8 0
3 years ago
PLZ just do it :( 20 points???
Sedaia [141]

The answer would be A, it has no solution

5 0
3 years ago
Read 2 more answers
Other questions:
  • Help me fast please ?
    11·1 answer
  • Graph the line by locating any two ordered pairs that satisfy the equation y = 1/4x+1
    11·1 answer
  • Which of the following is an example of quantitative data? A the player’s number on a baseball uniform B the serial number on a
    14·1 answer
  • 2 1⁄4 × 1 1⁄2 × 5⁄3 =
    15·1 answer
  • Two tangents each intersect a circle at opposite
    10·2 answers
  • Last week Rachel power walked 2 3/5 miles per day on each of the 7 days. During the same week, she also jogged 5 3/4 miles per d
    12·2 answers
  • How many factors of 10 are in 1,000
    6·2 answers
  • If it rained on 3 days out of 20 days, on what percent of the days did it rain?
    9·2 answers
  • PLEASE HELP MEEEEEEEEEEEEE
    9·1 answer
  • I NEED HELP ASAP PLEASEEEE!!!!! Given the cube, what is the total surface area and volume?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!