I hope this helps you
1.x^2-8x-3=0
disctirminant =(-8)^2-4.1. (-3)
disctirminant =64+12
disctirminant =76
x1,2= -b(+,-)square root of disctirminant /2a
x1=-(-8)+square root of 76/2.1
x1=8+square root of 76/2
x2=8-square root of 76/2
This is a cross multiplication, proportion problem. 50 miles in 55 minutes is to x miles in 75 minutes.
50/55= x/75
Now we cross multiply
(50*75)=(55*x)
3750=55x
Divide both sides by 55 to isolate x
68.18=x
You can travel 68.18 miles in 75 minutes.
Hope this helps!! :)
Answer:
a. x = 4 b. x = 7
Step-by-step explanation:
a. They are both congruent right angles because of the alternate exterior angles theorem
90-4 = 86
86/21 = 4
b. The angles are congruent because of the corresponding angles postulate
75+2 = 77
77/11 = 7
All you need to do is count the x's above each number.
1. 8 bracelets
2. $40
3. 3 bracelets
4. $33
5. 5 more bracelets
6. 21 bracelets total
7. 5x8=$40
9x2=$18
10x7=$70
11x3=$33
12x1=$12
40+18+70+33+12=$173 total
By using properties for <em>trigonometric</em> functions and <em>trigonometric</em> expressions, we find that the <em>exact</em> value of the sine of the angle 5π/12 radians is
.
<h3>How to find the exact value of a trigonometric expression</h3>
<em>Trigonometric</em> functions are <em>trascendent</em> functions, these are, that cannot be described algebraically. Herein we must utilize <em>trigonometric</em> formulae to calculate the <em>exact</em> value of a <em>trigonometric</em> function:





By using properties for <em>trigonometric</em> functions and <em>trigonometric</em> expressions, we find that the <em>exact</em> value of the sine of the angle 5π/12 radians is
.
To learn more on trigonometric functions: brainly.com/question/15706158
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