A diagram helps.
Diagonal TO divides the rectangle into two triangles of base 10 and height 4. The area of the two of them together (the area of the rectangle) is 10*4 = 40.
The area of rectangle TYOC is 40 square units.
Answer:
Step-by-step explanation:
6) AC and BE are congruent.
Distance or measurement of AC = 6
{ for distance we have to see only the absolute value }
Same way, Distance or measurement of BE = 6
7) a) J,C,K are co linear b) B,C,D are co linear c) C,K,L are co linear
8) CD, CA are opposite rays.
10) BC, KL are line segments
11) Vertically opposite angles : (i) ∠BCK , ∠JCD (ii) ∠BCJ , ∠KCD
HINT: Ray- has a beginning point but doesn't have ending point.
Line segment - has beginning and ending point
Answer:
(a) The standard error of estimate of the fraction of blue cards in the deck is 0.145.
(b) The sample size required is 84.
Step-by-step explanation:
The proportion of blue cards is, <em>p</em> = 0.30.
The number of times the cards were shuffled is, <em>n</em> = 10.
(a)
The standard error for sample proportion is given by:
Compute the value of standard error as follows:
Thus, the standard error of estimate of the fraction of blue cards in the deck is 0.145.
(b)
Now we need to reduce the standard error.
The standard error is inversely proportional to the sample size.
If the sample size is increased then the standard error will be decreased.
So we need to use a larger sample size.
Compute the value of <em>n</em> for standard error 0.05 and <em>p</em> = 0.30 as follows:
Thus, the sample size required is 84.
Answer:
a quadratic function
Step-by-step explanation:
A quadratic function is a second-degree polynomialfunction, and when graphed is called a parabola.
