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Elan Coil [88]
4 years ago
13

Why is it important to know about trigonometric ratios?

Mathematics
1 answer:
iris [78.8K]4 years ago
3 0
To solve right triangles
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Ricky can ride 17 km on his bike in the same length of time ha can walk 9 km.if his riding speed is 4 kph faster than his walkin
aivan3 [116]
Distance=speed times time
if they take the same time, we cal the time , t

b=bike speed
w=walking speed

bikedistnace=17=bt
walkdistance=9=wt

b is 4 more than w
b=4+w

we have
17=bt
9=wt
b=4w

ok so
multiply first equation by 9 and 2nd by 17

153=9bt
153=17wt
set equal
9bt=17wt
divide both sides by t
9b=17w
sub b=4+w for b
9(4+w)=17w
distribute
36+9w=17w
minus 9w both sides
36=8w
divide both sides by 8
4.5=w

he walks 4.5kph
5 0
3 years ago
Help again PLSSSSSSSSSSSSSSSSSS
Lapatulllka [165]

Answer:

-3(x-y)

Step-by-step explanation:

The difference of x and y: x-y

Negative three times the difference of x and y: -3(x-y)

7 0
3 years ago
X 8. From the given Venn-diagram, list the elements of the following sets, a) U b) XU Y and XUY c) X Y and X d) X - Y and X-Y e)
const2013 [10]

Answer:

where is the Venn diagram plz insert Venn diagram then I should solve

6 0
3 years ago
PLEASE HELP (40 points)
lawyer [7]
Y = 3. 3 is the y coordinate for the point with an x coordinate of -1 that lies on the line with a negative reciprocal to line ST.
3 0
4 years ago
Read 2 more answers
The diameter of a circle is 25 inches. What is the area? Use 3.14 for pi and round to the nearest hundredth.​
Stolb23 [73]

Answer:

500 inches

Step-by-step explanation:

r= d÷2

25÷2= 12.5

Area of circle = <em>pi</em><em> </em><em>×</em><em> </em><em>r</em><em>²</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>3</em><em>.</em><em>1</em><em>4</em><em>×</em><em>(</em><em>1</em><em>2</em><em>.</em><em>5</em><em>)</em><em>²</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>4</em><em>9</em><em>0</em><em>.</em><em>6</em><em>2</em><em>5</em><em> </em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>~</em><em>5</em><em>0</em><em>0</em><em> </em><em>inches</em>

8 0
4 years ago
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