Step-by-step explanation:
12. Cos 60° = 8/c
0,5 = 8/c
0,5 c = 8
c = 16
D² = V16²-8²
= V256-64
=V192 = V16×12 = 4V12
= 4V4×3 = 8V3
13. Cos 30° = 6/b
V3/2 = 6/b
V3 b = 12
b = 12/V3
b/Sin B = a /sin A
b/Sin90° = 6/ sin 60°
<u>b</u> = <u> </u><u> </u><u> </u><u>6</u><u> </u><u> </u><u> </u>
1 V3/2
b× <u>V3</u> = 6
2
b = 6× 2/V3
= 12/V3
Answer:
Result is statistically significant.
Step-by-step explanation:
Given that :
Chisquare statistic, χ² = 67.81
Critical value for the distribution, χ²critical = 3.84
α = 0.05
The Decison region :
If χ² statistic > Critical value ; Reject H0 ; this. Eans that result is statistically significant.
Therefore, since, 67.81 > 3.84 ; This means that the result is statistically significant at 0.05
Answer:
principal (p)=$1895
time (t)=4years
rate(r)=7.9%
Step-by-step explanation:
- compound interest amount=p((1+r/100)^t-1)=$1895((1+7.9/100)^4-1)=$1895×((1.355)-1)=$1895×(0.355)=$672.725
- simple interest=ptr/100=$1895×4×7.9/100=$598.82
The equation which represents the amount of money, y, that Lilia will save in x weeks is;
<h3>Slope-intercept form of linear equations</h3>
The slope-intercept form of linear equations usually takes the form;
According to the information given;
Therefore, the y-intercept of the equation is; $10.
- And since she saves $5 each week;
The slope of the equation is; $5.
By substitution, the required equation is;
Read more on slope-intercept form of equations;
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