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3 years ago

I need help with these

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

4 0

Answer:

87.7%

Step-by-step explanation:

Probability = number of positive results / total number of potential results

We will use the above formula to address the question of whether a random flight in Atlanta is likely to arrive on schedule.

Random flight in Atlanta is likely to arrive on time= the number of flights arriving in Atlanta on time, the cumulative number of flights arriving in Atlanta.

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In March, Delphine's house had 40% more snowfall than in February. Delphine's house had f centimeters of snowfall in February.

slamgirl [31]

Answer: Options 'C' and 'E' are correct.

Step-by-step explanation:

Since we have given that

Quantity of snowfall in February at Delphine's house be f centimeters

Quantity of snowfall in March at Delphine's house be 40% more than in February.

According to question,

$40\%\ of\ f=0.4f\\\\Therefore,\\\\f+0.4f=1.4f$

So, Options 'C' and 'E' are correct.

i.e. C) 1.4f

E) $\frac{4}{10}f+f$

4 0

4 years ago

Read 2 more answers

*NEED MAJOR HELP!*

7nadin3 [17]

Answer:

Given equation: 2(x+7) = 36. ......[1]

Distributive Property of multiplication states that when a number is multiplied by the sum of two numbers, the first number can be distributed to both of those numbers and multiplied by each of them separately i.e,

$a \cdot (b+c) =a\cdot b+ a\cdot c$

Then,

By using the distributive property in equation [1];

2(x+7) = 36

$(2 \cdot x) + (2 \cdot 7) =36$

Simplify:

$2x+14=36$

Divide both sides by 2 in above equation:

$\frac{2x+14}{2} =\frac{36}{2}$

Simplify:

x+7 = 18.

Therefore, the first correct step would be option B,

after that the next step would be option A then option F as shown above;

Remaining options are not enough information to solve the given equation 2(x+7) = 36.

8 0

4 years ago

Read 2 more answers

Identify the range of the function shown in the graph.<br>

AlladinOne [14]

Answer:

Step-by-step explanation:

Range is the y-values. Since our max and min for y-values is 5 and -5, respectively, our answer is C.

3 0

4 years ago

Fiona made a score of 76 on her midterm exam for her to get a b in the course the average of her midterm exam and final exam mus

qaws [65]

Answer:

84 <= x <= 102

Step-by-step explanation:

Fiona scored 76 on her 1st midterm. Lets call x the score she will get on her 2nd exam.

We know she needs between 80 and 89 inclusive so get a b. So the question is, how much does she need to get on the 2nd test? Or, what values x can take for her to get a b?

The average she gets between both test is the arithmetic mean, this is, the sum of both tests divided by 2:

(76+x)/2

So, she need this value to be between 80 and 89. Lets use inequalities:

80 <= (76+x)/2 <= 89

We can solve it in a similar way we do for equalities. Lets start by multiplying terms in every side by 2, to eliminate the 2 dividing the central term:

2*80 <= 76+x <= 89*2

160 <= 76+x <= 178

Now, lets subtract 76 in every side so we get x alone in the center:

160 - 76 <= x <= 178 - 76

84 <= x <= 102

This is, for getting a b she need her second score to be equal or greater than 84 and less or equal to 102.

Lets verify for some values. For example, if she gets 88:

(76+84)/2 = 160/2 =80---> verifies!

And any value greater than 84 will give her a better score. Lets see what happens with 102"

(76+102)/2 = 178/2 = 89 ---> verifies

Any score greater than 102 will giver here a total sore greater than 89 so it won't be a b.

So, if she scores 102 she will get 89 (the statement does not say the range of scores, it is not usually common that the pass 100, but as the statement does not restrict it we consider here. We the maximum score is 100 we will use 84 <= x <= 100).

3 0

4 years ago

Rewrite the range of each company’s wireless access devices in feet using scientific notation. (5,280 feet =1 mile)

Sauron [17]

Answer:

Ivan’s range: 2,640 = 2.64 x 10^3 ft

Winnies
range: (2.5)5280 = 13200 = 1.32 x 10^4 ft

Winnies WiFi has the greater range

3 0

3 years ago

Read 2 more answers