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ss7ja [257]
3 years ago
15

Every day Abby's teacher picks a number of the day from 1 to 20. The number of the day can be repeated. There are 180 days in th

e school year. Predict how many days the number of the day will be greater than 15.
Mathematics
1 answer:
Cloud [144]3 years ago
6 0
Well, greater than fifteen would mean there are 4 numbers, or 4/20 chance, knowing this, we can predict by dividing 180 by 4, which would equal 45 days in which the number of the day would be greater than 15
You might be interested in
-
ollegr [7]

Answer:

x = 2

y = -3

z = 4

( 2 , -3, 4 )

Step-by-step explanation:

x + y + z = 3 ---- i

x – y =5 ---- ii

y - z = -7 ---- iii

ii + iii

x - z = -2 ---- iv

i + ii

2x + z = 8 --- v

iv + v

3x = 6

x = 2

x=2 substitute for v

z = 4

x =2 substitute for ii

y = -3

5 0
3 years ago
How is 9/5 expressed as the sum of a whole number and fraction
MAXImum [283]
To do this, divide 9 by 5. it is one, with a remainder of 4. so the 4 goes over 5 as a fraction. the answer is then 1 4/5
3 0
2 years ago
Use a graphing calculator or online application to find the solutions to x 2 - 9 = to the nearest tenth. The solution is approxi
drek231 [11]
X^2-9=0 add 9 to both sides

x^2=9  take the square root of both sides

x=±3
7 0
3 years ago
Read 2 more answers
F(x) = x2 + 4x – 5 is x = -2.
Likurg_2 [28]
If im correct it would be -2(2)+4(-2)-5 which is -4-8-5 which would be -17
5 0
3 years ago
Further analysis of the data for the breakfast cereals in exercise 46 looked for an assocation between fiber content and calorie
photoshop1234 [79]

Complete Question:

Attached below as picture.

Answer:

From first graph there is no linear pattern so here linearity assumption violated.

From second graph there is observation is in some pattern like funnel or v shape so there is no constant variance occur that is there is no constant variance for error.

Constant variance for error occur when in residual plot all observation are in scatter everywhere.

From third graph we can say there is positive distribution but for regression analysis we need symmetric that is normal distribution.

Step-by-step explanation:

See graphs attached below.

8 0
3 years ago
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