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sergiy2304 [10]
2 years ago
6

HELP!!!! An 80% confidence interval for a proportion is found to be (0.12,0.18). What is the sample proportion?

Mathematics
2 answers:
jeka57 [31]2 years ago
8 0

Answer: .15

Step-by-step explanation:

Just did it

Jobisdone [24]2 years ago
4 0

Answer: 0.15

Step-by-step explanation:

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How many solutions does the following equation have? 5 x + 8 − 7 x = − 4 x + 1 5x+8−7x=−4x+15, x, plus, 8, minus, 7, x, equals,
UNO [17]

Answer: There is one valid solution to the equation 5x + 8 - 7x = -4x + 1, x = -3.5.

Step-by-step explanation:

8 0
2 years ago
) Set up a double integral for calculating the flux of F=3xi+yj+zk through the part of the surface z=−5x−2y+2 above the triangle
Fynjy0 [20]

The surface (call it S) is a triangle with vertices at the points

x=0,y=0\implies z=2\implies(0,0,2)

x=0,y=2\implies z=-2\implies(0,2,-2)

x=2,y=0\implies z=-8\implies(2,0,-8)

Parameterize S by

\vec s(u,v)=(1-v)(2,0,-8)+v\bigg((1-u)(0,2,-2)+u(0,0,2)\bigg)=(2-2v,2v-2uv,-8+6v+4uv)

with 0\le u\le1 and 0\le v\le1. Take the normal vector to S to be

\vec s_v\times\vec s_u=(20v,8v,4v)

Then the flux of \vec F across S is

\displaystyle\iint_S\vec F(x,y,z)\cdot\mathrm d\vec S=\int_0^1\int_0^1\vec F(x(u,v),y(u,v),z(u,v))\cdot(\vec s_v\times\vec s_u)\,\mathrm du\,\mathrm dv

=\displaystyle\int_0^1\int_0^1(6-6v,2v-2uv,-8+6v+4uv)\cdot(20v,8v,4v)\,\mathrm du\,\mathrm dv

=\displaystyle8\int_0^1\int_0^1(11v-10v^2)\,\mathrm du\,\mathrm dv=\boxed{\frac{52}3}

8 0
3 years ago
Kid need help with homework 2 (8+×)=22
Masja [62]
X=3
22 \div 2 = 11
8 + 3 = 11

Step By Step:

find x

8 + ? • 2 = 22

22 ÷ 2 = 11

There for x = 3

8 + 3 = 11.
4 0
3 years ago
Read 2 more answers
Wh as t is a prime numbers​
Alexeev081 [22]

A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers

Step-by-step explanation:

8 0
3 years ago
pls help immediately! this is due in 3 mins :/.(i’ll mark brainiest if u don’t leave a link just help me pls!)
Serhud [2]

Answer:

They help the tree reach deep into the sandy soil for nutrients and ground water.

Step-by-step explanation:

The job of a tree's roots is to collect water and nutrients.

5 0
3 years ago
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