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lakkis [162]
2 years ago
8

Factor the following expression

" alt="x^{2} -7x-18" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
guapka [62]2 years ago
4 0

Answer:

(x-9) (x=2)

Step-by-step explanation:

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You previously found the mean of this data set. Use that in answering the question. 63, 89, 92, 73, 79, 72, 34, 36, 94, 21, 25,
kicyunya [14]

Answer:

Sum of squares of differences = 11239.74

Step-by-step explanation:

We are given the following data set:

63, 89, 92, 73, 79, 72, 34, 36, 94, 21, 25, 93, 22, 90, 79

We have to calculate the sum of square of the data set.

Formula:

\text{Sum of square of differences} = \sum (x_i -\bar{x})^2

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{962}{15} = 64.13

Sum of squares of differences =

1.284444444 + 618.3511113 + 776.5511113 + 78.61777778 + 221.0177779 + 61.88444445 + 908.0177776 + 791.4844443 + 892.017778 + 1860.484444 + 1531.417778 + 833.2844446 + 1775.217777 + 669.0844446 + 221.0177779

= 11239.74

3 0
3 years ago
 helloo , i need help with this problem it says write this number (797,000,000,000+ 619,000,000+132)in standard form, please h
inysia [295]

Okay its 797,619,000,132

They all have different place values

4 0
2 years ago
Ted’s team score average of 23.5 points in 4 basketball games. Lauren​'s team scores an average of 75.5 points in the same 4 gam
Setler [38]

Answer:

Lauren has 52 more points than Ted.

Step-by-step explanation:

Ted- 23.5

Lauren- 75.5

75.5-23.5=52

52

5 0
3 years ago
Geometry question please help!
fiasKO [112]

Answer:

4

Step-by-step explanation:

Since,

The width of the Longer gear is 7, and the smaller gear has a width of 3..

7-3 = 4

Hope it helps...

Marking me as Brainliest would help me... :(

5 0
2 years ago
Mrs. Gilus is in charge of the budget for the school. Last year, we began the year with &708.88 in our bank account, but by
liberstina [14]
It sounds like they had $708.88 at the beginning, however by the end of the year they OWED $347.99. The first number is in the positive while the other is a negative. Add the last number to the first number for the amount that they have spent which would be $1,056.87.
8 0
3 years ago
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