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Fantom [35]
3 years ago
12

Emma's grades are 100, 98, 94, 90, and 88. Emma decides not to study for the final because her grades are so high on all of the

previous tests. Emma scores 64 on the final. As an outlier, how does 64 affect the mean of Emma's previous scores? Assume all scores are treated equally.
Mathematics
1 answer:
makkiz [27]3 years ago
8 0

Answer:

Average x = 89

Size n = 6

Sum Sum = 534

Solution:

The Average (Mean) is equal to the Sum of all data divided by the Size of the data set.

Average = Sum / Size

= 534 / 6

= 89

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Find the distance between each pair if points
sukhopar [10]

Answer:

point a is positive but point b is negative

6 0
3 years ago
What is the answer for 25.2÷2.1 using showing my work
lilavasa [31]

Answer:

25.2

Step-by-step explanation:

2.1*12=25.2

use a calculator if you're allowed to show work that way, if not a simple way is

2.1*10=21

2.1*11=23.1

2.1*12 is equal to 2.1*10=21 because 2*12=24 and .1*12=1.2

7 0
3 years ago
What is the area of this triangle ?
oee [108]

Answer:

Area of triangle is 9.88 units^2

Step-by-step explanation:

We need to find the area of triangle

Given E(5,1), F(0,4), D(0,8)

We will use formula:

Area\,\,of\,\,triangle =\sqrt{s(s-a)(s-b)s-c)} \\where\,\, s = \frac{a+b+c}{2}

We need to find the lengths of side DE, EF and FD

Length of side DE = a = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Length of side DE = a = =\sqrt{(5-0)^2+(1-8)^2}\\=\sqrt{(5)^2+(-7)^2}\\=\sqrt{25+49}\\=\sqrt{74}\\=8.60

Length of side EF = b = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Length of side EF = b = =\sqrt{(0-5)^2+(4-1)^2}\\=\sqrt{(-5)^2+(3)^2}\\=\sqrt{25+9}\\=\sqrt{34}\\=5.8

Length of side FD = c = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Length of side FD = c = =\sqrt{(0-0)^2+(8-4)^2}\\=\sqrt{(0)^2+(4)^2}\\=\sqrt{0+16}\\=\sqrt{16}\\=4

so, a= 8.60, b= 5.8 and c = 4

s = a+b+c/2

s= 8.6+5.8+4/2

s= 9.2

Area of triangle==\sqrt{s(s-a)(s-b)s-c)}\\=\sqrt{9.2(9.2-8.6)(9.2-5.8)(9.2-4)}\\=\sqrt{9.2(0.6)(3.4)(5.2)}\\=\sqrt{97.5936}\\=9.88

So, area of triangle is 9.88 units^2

4 0
3 years ago
What is the next term of the arithmetic sequence?<br> 6,2, -2, -6,
marissa [1.9K]

Answer:

-10

Step-by-step explanation:

-4 between each number

3 0
3 years ago
4 ice cream cones cost $6. At this rate, how much do 7 ice cream cones cost?
satela [25.4K]

Answer:

$42

Step-by-step explanation:

Equation: y = 6x

x = number of ice cream cones

y = 6(7) = 42

5 0
3 years ago
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