Answer:
<u>The</u><u> </u><u>first</u><u> </u><u>graph</u>
Step-by-step explanation:
Answer:
1. the value of x can equal 25
the shortest length can equal 7
the longest length can equal 30
2. 2x+2.1=7.5
Step-by-step explanation:
Given:
1.
A scalene triangle with sides y, 4y and x
and perimeter,p= 60cm
As per perimeter formula:
p= sum of all sides
Putting values we get
60=x+4y+y
60=x+5y
so correct options are
the value of x can equal 25
the shortest length can equal 7
the longest length can equal 30
2. An isosceles triangle with sides y=2.1, x and x
and perimeter,p = 7.5
As per perimeter formula:
p= sum of all sides
Putting values we get
7.5=2.1 + x +x
7.1=2.1+2x !
Answer:
6.4 x 10¹¹ litres
Step-by-step explanation:
Given:
Surface area = 16.0 mi²
Average depth = 51.0 ft
To calculate the volume of the lake in liters,
(i) <em>Convert the average depth to miles.</em>
1 ft = 0.000189 mi
51.0 ft = 51.0 x 0.000189 mi = 0.009639 mi
(ii) <em>Now find the volume in mi³</em>
volume = surface area x average depth.
volume = 16.0 mi² x 0.009639 mi
volume = 0.154224 mi³
(iii) <em>Finally, convert the volume from mi³ to litres</em>
1 mi³ = 4.168 x 10¹² litres
0.154224 mi³ = 0.154224 mi³ x 4.168 x 10¹² litres / 1 mi³
0.154224 mi³ = 6.4 x 10¹¹ litres
Therefore, the volume in litres is 6.4 x 10¹¹
Answer:
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Step-by-step explanation:
ΔUSA ≅ ΔPAL
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