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
Lesechka [4]
3 years ago
12

Answer correctly / explain a little.

Mathematics
2 answers:
Makovka662 [10]3 years ago
8 0

Answer:

B) 8.4 lbs

Step-by-step explanation:

given:

y = 1.8x + 1.2

where,

x = number of weeks,

y = total lbs lost

in 4 weeks, x = 4 (substitute into equation):

y = 1.8x + 1.2

y = 1.8 (4) + 1.23

y = 7.2 + 1.2

y = 8.4 lbs

Dvinal [7]3 years ago
4 0

Answer:

B) 8,4 pounds

Step-by-step explanation:

y = 1,8[4] + 1,2; 8,4 = y \\ \: \: \: \: \: \: \: \: \: \: \: 7,2

You substitute <em>four</em><em> </em><em>weeks</em><em> </em>in for <em>x</em>,<em> </em>multiply that by 1,8 to get 7,2, and finally add 1,2 to it, to get the total weight loss of 8,4 pounds [3,81018 kilograms].

I am joyous to assist you anytime.

You might be interested in
A family saves $65 every 2 weeks how much will the family save in 8 weeks
navik [9.2K]
$260 if they are payed every 2 weeks in an 8 week period 8 divided by 2 is 4 then you would multiply $65x4
7 0
3 years ago
Read 2 more answers
How can you use 4x7 to find 8x7?
max2010maxim [7]
4 x 7 is 28, and 8 x 7 is 56. You can use 4 x 7 to find 8 x 7 by multiplying that first and doubling that quotient.

Half of 56 is 28, therefore doubling that allows us to find the quotient of 8 x 7.
6 0
3 years ago
Read 2 more answers
BRAINLIEST:
Romashka-Z-Leto [24]

Answer:

2

Step-by-step explanation:

what you do is -4(2)^-2 which is -1

then you do 3(5)^0 which is 3

then you add it together and it is 2

7 0
2 years ago
In October 2012, Apple introduced a much smaller variant of the Apple iPad, known as the iPad Mini. Weighing less than 11 ounces
nadya68 [22]

Answer:

a) 0.4286 = 42.86% probability that the battery life for an iPad Mini will be 10 hours or less

b) 0.2857 = 28.57% probability that the battery life for an iPad Mini will be at least 11 hours

c) 0.5714 = 57.14% probability that the battery life for an iPad Mini will be between 9.5 and 11.5 hours

d) 86 should have a battery life of at least 9 hours.

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X lower than x is given by the following formula.

P(X \leq x) = \frac{x - a}{b-a}

The probability of being higher than x is:

P(X > x) = \frac{b - x}{b-a}

The probability of being between c and d is:

P(c \leq X \leq d) = \frac{d-c}{b-a}

Assume that battery life of the iPad Mini is uniformly distributed between 8.5 and 12 hours.

This means that a = 8.5, b = 12

a. What is the probability that the battery life for an iPad Mini will be 10 hours or less (to 4 decimals)?

P(X \leq x) = \frac{x - a}{b-a}

P(X \leq 10) = \frac{10 - 8.5}{12 - 8.5} = 0.4286

0.4286 = 42.86% probability that the battery life for an iPad Mini will be 10 hours or less.

b. What is the probability that the battery life for an iPad Mini will be at least 11 hours (to 4 decimals)?

P(X > x) = \frac{b - x}{b-a}

P(X > 11) = \frac{12 - 11}{12 - 8.5} = 0.2857

0.2857 = 28.57% probability that the battery life for an iPad Mini will be at least 11 hours

c. What is the probability that the battery life for an iPad Mini will be between 9.5 and 11.5 hours (to 4 decimals)?

P(c \leq X \leq d) = \frac{d-c}{b-a}

P(9.5 \leq X \leq 11.5) = \frac{11.5 - 9.5}{12 - 8.5} = 0.5714

0.5714 = 57.14% probability that the battery life for an iPad Mini will be between 9.5 and 11.5 hours.

d. In a shipment of 100 iPad Minis, how many should have a battery life of at least 9 hours (to nearest whole value)?

Proportion of iPad Minis with a battery life of at least 9 hours.

P(X > 11) = \frac{12 - 9}{12 - 8.5} = 0.8571

Out of 100:

0.8571*100 = 85.71

To the nearest whole number

86 should have a battery life of at least 9 hours.

5 0
3 years ago
-2x+3=9. What does x equal?
Dimas [21]

Answer:

<h2>x= -3</h2>

Step-by-step explanation:

- 2x + 3 = 9 \\  - 2x = 9 - 3 \\  - 2x = 6 \\  \frac{ - 2x}{ - 2}  =  \frac{6}{ - 2}

x =  - 3

3 0
3 years ago
Read 2 more answers
Other questions:
  • If a five digit number is rounded to the ten thousands place is it possible for the rounded number to be a six digit number.
    15·1 answer
  • The lower base of the frustum shown in the figure is a square 8ft on each side. The upper base is a square 4ft on each side. In
    10·1 answer
  • Explain what a scatterplot is please and show and example
    8·1 answer
  • A tank starts out with 860 gallons of liquid. A pump adds liquid to the tank at a constant rate. After 8 hours, the tank contain
    15·2 answers
  • Linda is going for a walk. she takes 3 hours to walk 4.8 miles. what is her speed?
    13·1 answer
  • What is the measure of each angle in a hexagon if the lengths of all six sides are equal?
    9·2 answers
  • Help answer 7, 8 and 9 for brainlst
    10·1 answer
  • Plz help!!!!!!!!!!!!!!!
    15·1 answer
  • 3.) 3=x+3 - 5x <br><br><br> Can someone good at math help me solve this!
    15·1 answer
  • 9 1/10 - 4 3/4<br><br><br> fraction need help now pls do not lie just for points will be reported
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!