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
ladessa [460]
3 years ago
9

Six less than a number a 7 times a number is 85

Mathematics
2 answers:
77julia77 [94]3 years ago
8 0

Answer:

7x-6=85

Step-by-step explanation:

7×number for example x

then subtract 6 from that

then you have 85

docker41 [41]3 years ago
6 0

Answer:

Step-by-step explanation:h

You might be interested in
Antonio wants to purchase new Beats and a new iPod. The Beats he wants cost $299 and
storchak [24]
$299 and $199 adds up to 498, including the tax rate 7.5% and your total is $535.35
3 0
3 years ago
1. Which expressions are equivalent to -3(x - y)? Select all that apply. A. -3x + 3y B. -3x - 3y C. -3x - y D. -3x + -3y E. 3y -
Inessa [10]

Answer:

A and E

Step-by-step explanation:

-3(x - y) = -3x + 3y = 3y - 3x

A. E

8 0
2 years ago
A average amount of money on deposit in a savings account is $7500. Suppose a random sample of 49 accounts shows the average in
Valentin [98]

Answer:  

z=-3.79

p_v =2*P(z  

Step-by-step explanation:  

1) Data given and notation  

\bar X=6850 represent the mean average amount of money on deposit in savings account for the sample  

\sigma=1200 represent the population standard deviation for the sample  

n=49 sample size  

\mu_o =7500 represent the value that we want to test

\alpha=0.01 represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

2) State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean for the amount of money on deposit in savings account differs from 7500, the system of hypothesis would be:  

Null hypothesis:\mu =7500  

Alternative hypothesis:\mu \neq 7500  

Since we know the population deviation, is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

3) Calculate the statistic  

We can replace in formula (1) the info given like this:  

z=\frac{6850-7500}{\frac{1200}{\sqrt{49}}}=-3.79  

4)P-value  

Since is a two-sided test the p value would be:  

p_v =2*P(z  

5) Conclusion  

If we compare the p value and the significance level given \alpha=0.01 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, so we can conclude that the average amount of money deposit in savings account its significantly different from 7500 tons at 1% of signficance.  

7 0
3 years ago
The original quantity is 10 and the new quantity is 13. What is the percent change?​
Leya [2.2K]

3 is 13 more than 10, and 3 is 30% of 10, so 30% im pretty sure

6 0
3 years ago
Read 2 more answers
First anserw gets brainest 8th grade, root squared question
Katen [24]

Answer:

±11

11*11=121

-11*-11=121

4 0
3 years ago
Other questions:
  • Transformation rules, HELP PLEASE, WILL GIVE BRAINLEIST
    13·1 answer
  • I need help in these pretty please :)
    14·2 answers
  • How to find interior angles of a polygon?
    10·1 answer
  • Tristan is building steps up to a deck that is 1 and 5/6 yards above the ground.The steps must be all the same height if you wan
    9·1 answer
  • Rabbits are released into the woods where there are no other rabbits of this species. The function f(t) can be used to model the
    6·1 answer
  • 5(m+4)=-2(-4-m)+3<br> help please
    15·1 answer
  • The point (3 , k) is a distance of 5 units from (0 , 1). Find the two possible values of k.
    8·1 answer
  • ----------------------------------------------------------------------------------------------------------
    13·1 answer
  • What is the area? Please help me.
    12·2 answers
  • I need help please I'm stuck on it ​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!