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
Kisachek [45]
3 years ago
7

8x + 12 = 4r - 16 find r

Mathematics
2 answers:
Ber [7]3 years ago
7 0
After r duhh IM SORRY
Lyrx [107]3 years ago
7 0
The answer would be R = 2x + 7
You might be interested in
Maria plans to double the amount of time she spends walking per day each week.she starts , on week 1 , walking 5 minutes per day
alisha [4.7K]

Answer:

a) 160 minutes per day

b) Find the graph attached

c) on 10th week Maria would be walking  2560 minutes per day

Step-by-step explanation:

Week 1 - 5 minutes per day

Week 2 - 10 minutes per day

Week 3 - 20 minutes per day

Week 4 - 40 minutes per day

Week 5 - 80 minutes per day

Week 6 - 160 minutes per day

a) 160 minutes per day

b) Find the graph attached

c) on 10th week Maria would be walking  2560 minutes per day

5 0
3 years ago
According to the University of Nevada Center for Logistics Management, 6% of all mer-
Fudgin [204]

Answer:

a) The point estimate of the proportion of items returned for the population of

sales transactions at the Houston store = 12/80 = 0.15

b) The 95% confidence interval for the proportion of returns at the Houston store = [0.0718 < p < 0.2282].

c) Yes.

We set an hypothesis and construct a test statistics. The test statistics result gives us:

Z calculated  = 2.2545, and this gives us the p-value = 0.0121. We assumed 95% confident interval. Hence, the level of significance (α) = 5%. Conclusively, since the p-value ==> 0.0121 is less than (α) = 5%, the test is significant. Hence, the proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

Step-by-step explanation:

a) Point estimate of the proportion = number of returned items/ total items sold = 12/80 = 0.15.

b) By formula of confident interval:

CI(95%) = p ± Z*\sqrt{\frac{p*(1-p)}{n} }  =  0.15 \pm 1.96 *\sqrt{\frac{0.15*(1-0.15)}{80} },

CI(95%) = [0.0718 < p < 0.2282]

c) The hypothesis:

H_{0}: The proportion of returns at the Houston store is not significantly different from the returns  for the nation as a whole.

H_{a}: The proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

The test statistics:

Z = \frac{\hat{p} - p_{0}}{\sqrt{\frac{p*(1-p)}{n} }}, where p_{0} is the proportion of nation returns.

Z calculated  = 2.2545, and this gives us the p-value = 0.0121. We assumed 95% confident interval. Hence, the level of significance (α) = 5%. Conclusively, since the p-value ==> 0.0121 is less than (α) = 5%, the test is significant. Hence, the proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

6 0
3 years ago
If a rectangles width is twice as long as its length. If the perimeter is 36in find its length.
Dmitriy789 [7]
Answer of what is the length is 12. if we add all the sides it has to come as 36,so if length=x then width=2x therefore X+X+2X+2X=36 therefore x=6 then width=2x =12.
4 0
3 years ago
-63<br> —— = -7 what’s the error <br> -9
STatiana [176]

Answer:

One of the negatives must go

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Which is equivalent to 1.04?
Elodia [21]

Answer:

104/100 is equivalent to 1.04

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • A parking garage charges $3 for each of the first three hours. After three hours, the charge is $7 an hour. What is the total co
    9·2 answers
  • I want to make sure i got this right. PLS HELP ASAP I NEED IT<br><br> CALC 1 one question
    13·1 answer
  • How to mske a ten to find 17_8<br>​
    10·1 answer
  • Please help with this!!! Please!!!
    5·1 answer
  • Point Y is the midpoint of segment XZ. If XY = 2(3x +1) and YZ = 5x + 22, find the value of x. x = 20 x = 24 x = 18 x =11
    12·1 answer
  • (08.05 LC) (10 points) 1. Circle 2. Cylinder 3. Cone 4. Rectangle 5. Triangle a. perpendicular cross section of a pyramid b. per
    12·1 answer
  • Negative 2 and two-thirds, negative 5 and one-third, negative 10 and two-thirds, negative 21 and one-third, negative 42 and two-
    9·2 answers
  • Please help! If possible, please word your explanation simply.
    11·2 answers
  • Ty
    10·1 answer
  • What's the correct answer??
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!