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d1i1m1o1n [39]
3 years ago
11

What number is not a composite number 2,9,15,21?

Mathematics
1 answer:
Citrus2011 [14]3 years ago
7 0
2 is not a composite number
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A cone-shaped tent has a diameter of 12 ft and a height of 6 ft.
mestny [16]
Here's the formula for the volume of a cone:

V=\frac{1}{3}\pi\ r^2h

Plug in 3.14 for \pi.
Plug in 6 for the height h.
Our radius is half of our diameter. r=6.

V\approx\frac13\times3.14\times6^2\times6

6² = 6 × 6 = 36.
Now we just multiply together 1/3, 3.14, 36, and 6 to get...

V\approx226.08

Rounding to the nearest tenth...

\boxed{V\approx226.1\ ft^3}
7 0
3 years ago
Read 2 more answers
A Florida poll asked 1200 Floridians whether they would prefer an increase in taxes or a decrease in government services as a wa
mojhsa [17]

Answer:

Step-by-step explanation:

Given that a lorida poll asked 1200 Floridians whether they would prefer an increase in taxes or a decrease in government services as a way to balance the budget.

H_0: p =0.50\\H_a: p >0.50\\

(Right tailed test)

STd error assuming H0 to be true =\sqrt{pq/n} =0.0144 for n =1200

Mean difference =0.02

Test statistic =1.386

p value = 0.0823

5) If n =2500, std error would be = 0.01

Test statistic Z = 2

p value = 0.25

6 0
3 years ago
What is the solution for the system of equations? Use the substitution method to solve. 2x+y=20
slava [35]

2x + y = 20

-5y = -6x + 12


To use the substitution method, first isolate one of the variables in one of the equations.

Isolate the "y" in the first equation (because it is the easiest to isolate), and substitute it into the second equation:

2x + y = 20     Subtract 2x on both sides

y = 20 - 2x


-5y = -6x + 12   (since y = 20 - 2x, you can substitute 20 - 2x into y)

-5(20 - 2x) = -6x + 12       Multiply -5 into (20 - 2x)

-100 + 10x = -6x +12      Add 100 on both sides

10x = -6x + 112        Add 6x on both sides

16x = 112           Divide 16 on both sides

x = 7


Now that you have found x, you can substitute 7 into x for one of the original equations:

2x + y = 20

2(7) + y = 20

14 + y = 20    Subtract 14 on both sides

y = 6


-5y = -6x + 12

-5y = -6(7) + 12

-5y = -42 + 12

-5y = -30       Divide -5 on both sides

y = 6


x = 7, y = 6

5 0
3 years ago
Write the solution to the inequality in set - builder notation:<br> 5r + 8 &lt; 63
Leni [432]
<span>First, the inequality needs to be solved. The first step is to subtract 8 from both sides of the inequality, leading to 5r < 55. Dividing 5 out from both sides, this will leave r < 11. Next, to form a set notation, the inequality is written in such form: {r | r < 11}.</span>
7 0
3 years ago
a basketball team played five games . in those games , the team won by 7 points , lost by 3 , won by 4, lost by 2 , and won by 9
Paul [167]

Answer: 3

Step-by-step explanation:

7-3+4-2+9=15

15/5=3

6 0
3 years ago
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