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zalisa [80]
3 years ago
11

I just need the inequality/equation please!

Mathematics
1 answer:
vladimir2022 [97]3 years ago
4 0

Let x represent the amount that she needs to save each month for the next year.

Stephanie is saving money to buy a new computer. So far she has saved $200. This means that the total amount that she would have saved in y months is

200 + xy

Since there are 12 months in a year,

an inequality to show how much she needs to save each month for the next year so she has at least $1200 to spend on the computer is

200 + 12x ≥ 1200

12x ≥ 1200 - 200

12x ≥ 1000

x ≥ 1000/12

x ≥ 83.33

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Josh travels frequently. For a particular airline, it takes 20 minutes for the first bag to arrive in baggage claim after a flig
Orlov [11]

Using the uniform distribution, it is found that:

A,B) 0.3 of the time does it take longer than 27 minutes for Josh’s bag to arrive in baggage claim.

C) 20% of the time does Josh’s bag arrive in less than 22 minutes.

--------------------------

An uniform distribution has two bounds, a and b.  

The probability of finding a value of at lower than x is:

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

The probability of finding a value between c and d is:

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

The probability of finding a value above x is:

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

--------------------------

  • In the graph, we have that the distribution is uniform between 20 and 30 minutes, thus a = 20, b = 30

--------------------------

Itens a and b:

  • Above 27 minutes, thus:

P(X > 27) = \frac{30 - 27}{30 - 20} = 0.3

0.3 of the time does it take longer than 27 minutes for Josh’s bag to arrive in baggage claim.

--------------------------

Item c:

  • Less than 22 minutes, thus:

P(X < 2) = \frac{22 - 20}{30 - 20} = 0.2

0.2*100 = 20%

20% of the time does Josh’s bag arrive in less than 22 minutes.

A similar problem is given at brainly.com/question/15855314

6 0
3 years ago
Show steps solving this problem 173×797=
Contact [7]
If the problem is
 (17 ^ 3) * (79 ^ 7) 
 The steps are: 
 Step 1:
 (17 ^ 3) = 4913
 Step 2:
 (79 ^ 7) = 1.92039E + 13
 Step 3:
 (4913) * (1.92039E + 13) = 9.43488E + 16

 If the problem is 
 (173) * (797)
 Step 1: 
 Multiply both terms with a calculator:
 (173) * (797) = 137881
8 0
3 years ago
Teddy, Karzan and Karl went to the store to buy candy. Teddy spent $21 on 3 pieces of candy, Karzan spent $63 on 21 pieces of ca
mr Goodwill [35]
Karl did because $58 for 20 pieces is cheaper than $63 for 21 and $3 for 21 pieces.
8 0
3 years ago
Read 2 more answers
A recent study was conducted to explore the relationship between the weight of a car and miles per gallon (gas mileage). A linea
k0ka [10]

Answer: a.  iv. The weight of a car can be used to explain about 79.6% of the variability in gas mileage using a linear relationship.

b. ii. There is a fairly strong, negative relationship between car weight and miles per gallon.

Step-by-step explanation:

  • A coefficient of determination (denoted by R²) is a measure in a regression model that determines proportion of the variance in the dependent quantity that is predictable from the independent quantity.
  • It is square of correlation coefficient (R).

Here,   independent quantity = weight of a car  

dependent quantity = miles per gallon (gas mileage)

The coefficient of determination (R²) was reported to be 79.6%.

That means, The weight of a car can be used to explain about 79.6% of the variability in gas mileage using a linear relationship.

  • A correlation coefficient(R) tells about the strength and direction of relation .
  • It lies between -1 and 1.

For the study, the correlation coefficient R is -0.8921.

There is a fairly strong, negative relationship between car weight and miles per gallon.

7 0
4 years ago
2) Select the algebraic definition for the piecewise function graph.
Lady bird [3.3K]

Answer:

The answer is C - 2x + 8.

Step-by-step explanation:

In the first domain:

0 \leqslant x < 2

does not exist.

in the second domain:

2 \leqslant x < 4

The function is:

f(x) =  - 2x + 8

7 0
3 years ago
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