40% of $129.50 = $51.80
$129.50 - $51.80 = $77.70
Sale Price : $77.70
Answer:
Step-by-step explanation:
Here a right angled triangle is given to us and we need to find out the value of x . The measure of one of the sides is 24 and one of the acute angle is 53° .
- Here 24 is hypotenuse of the triangle and x is the perpendicular .
So here we may use the ratio of sine as ,
<u>•</u><u> </u><u>On</u><u> </u><u>substitut</u><u>i</u><u>n</u><u>g</u><u> </u><u>the</u><u> </u><u>respective</u><u> </u><u>values</u><u> </u><u>,</u>
Substitute the value of sin 53° = 4/5 ,
Cross multiply ,
Simplify,
Answer:
3 seconds
Step-by-step explanation:
16 = 160 - 16t²
16t² = 144
t² = 9
t = 3
Answer:
Step-by-step explanation:
y=ax²+bx+c
x=0,y=0,c=0
y=ax²+bx
2=9a+3b (×-5)
3=25a+5b(×3)
add
9-10=75a-45a+15b-15b
30a=-1
a=-1/(30)
2=9×(-1/30)+3b
3b=2+3/10=23/10
b=23/30
y=-1/30 x²+23/30=-1/30(x²+23x+(23/2)²)+1/30 ×(529/4)
y=-1/30(x+23/2)²+529/120
Answer:
25.5
Step-by-step explanation:
Using SOH CAH TOA, you can see that x is the hypotenuse, and 24 is adjacent to the angle 20, so you will need to use CAH.
CAH is cos=adjacent/hypotenuse. Substituting our values in means cos(20) will be equal to 24/x. By cross multiplying, you receive cos(20) x =24. To find x, divide 24 by cos(20) to get 25.5 to the nearest tenth.
