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Fantom [35]
3 years ago
15

In 28% of a sum is $100.80, what is the sum?

Mathematics
2 answers:
Tema [17]3 years ago
8 0

$360.00 hope this helps


Len [333]3 years ago
6 0

x= sum


.28 x=100.80

x= 100.80/.28

x=$360

the sum=$360

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The table below shows data from a survey about the amount of time students spend doing homework each week. The students were in
nadezda [96]

Answer:

The correct option is;

Both spreads are best described by the standard deviation

Step-by-step explanation:

The given information are;

,                                    College                       High School

High,                              20                               20

Low,                                6                                 3

Q₁,                                   8                                 5.5

Q₃,                                  18                                16

IQR,                                 10                                10.5

Median,                           14                                11

Mean,                              13.3                             11

σ,                                      5.2                             5.4

Checking for outliers, we have

College

Q₁ - 1.5×IQR gives 8 - 1.5×10 = -7

Q₃ + 1.5×IQR gives 18 + 1.5×10 = 33

For high school

Q₁ - 1.5×IQR gives 5.5 - 1.5×10.5 = -10.25

Q₃ + 1.5×IQR gives 16 + 1.5×10.5 = 31.75

Therefore, there are no outliers and the data is representative of the population

From the data, for the college students, it is observed that the difference between the mean, 13.3 and Q₁, 8, and between Q₃, 18 and the mean,13.3 is approximately the standard deviation, σ, 5.2

The difference between the low and the high is also approximately 3 standard deviations

Therefore the college spread is best described by the standard deviation

Similarly for the high school students, the IQR is approximately two standard deviations, the  difference between the mean, 11 and Q₁, 5.5, and between Q₃, 16 and the mean,11 is approximately the standard deviation, σ, 5.4

Therefore the high school spread is also best described by the standard deviation.

4 0
3 years ago
Point M is located in the third quadrant of the coordinate plane, as shown.
Angelina_Jolie [31]
(-5.5,2) is the answer
4 0
3 years ago
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What is the expression in factored form? x2 + 14x + 48
scZoUnD [109]
(x+6)(x+8) = 0 
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I'm just wondering, does the equation happen to be  2x^2 + 14x + 48? That would make more sense with the answer I got.

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2 years ago
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Please answer ASAP. A baseball is hit upward from a platform that is m high at an initial speed of 29m/s. The approximate height
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Answer:

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b) Listed below.

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We will then use the quadratic formula to find the answer.

[please ignore the A-hat; that is a bug]

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= \frac{-6.616970714}{-10} and \frac{-51.38302929}{-10}

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So, the time period for which the baseball is higher than 18 metres ranges from about 0.7 seconds to 5.1 seconds.

b) Restrictions on the domain and range of the function are that the domain and range can never be negative, since time cannot be negative, and height cannot be negative. The height cannot exceed the vertex of the parabola, since that is the highest the ball will ever go. It cannot exceed that height since gravity will cause the ball to fall down.

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Answer:

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Step-by-step explanation:

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