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yuradex [85]
3 years ago
13

F

Mathematics
1 answer:
dedylja [7]3 years ago
7 0

Step-by-step explanation:

F = ka, where k is a real constant.

When a = 9, F = 36.

=> (36) = k(9), k = 4.

Therefore when a = 4,

F = (4)(4) = 16.

The value of F is 16 when a is 4.

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Sam and Bethan share £54 in the ratio 5:4. how much will each person get
Sunny_sXe [5.5K]
Given :- 
sam and Bethan shareare in the ratio 5:4 respectively. 
 Total no of money is = 54ÂŁ 
 Solution :-
 Let Sams share is be x ie = 5 
 Let Bethans share be y ie = 4
 Total no of share is = 9
 Therefore the persons share is (particular persons share / total no of share) *
total value of money 
 Ans : -
 Therefore sams share x is = (5/9)* 54 =30ÂŁ
 Therefore Bethans share y is = (4/9) * 54 = 24ÂŁ
5 0
3 years ago
A man starts at a point A and walks 18 feet north. He then turns and walks due east at 18 feet per second. If a searchlight plac
34kurt

Answer:

1/10 per sec

Step-by-step explanation:

When he's walked x feet in the eastward direction, the angle Θ that the search light makes has tangent

tanΘ = x/18

Taking the derivative with respect to time

sec²Θ dΘ/dt = 1/18 dx/dt.

He's walking at a rate of 18 ft/sec, so dx/dt = 18.

After 3seconds,

Speed = distance/time

18ft/sec =distance/3secs

x = 18 ft/sec (3 sec)

= 54ft. At this moment

tanΘ = 54/18

= 3

sec²Θ = 1 + tan²Θ

1 + 3² = 1+9

= 10

So at this moment

10 dΘ/dt = (1/18ft) 18 ft/sec = 1

10dΘ/dt = 1

dΘ/dt = 1/10 per sec

8 0
3 years ago
What is the value of 5 units as a mixed number
masha68 [24]

5integer 0/1 is the mixed fraction of 5 units

8 0
3 years ago
Why are 4(5) and 20 equivalent expressions?
Studentka2010 [4]

Answer:

4 times 5 = 20, and 20 is... well.. 20

Step-by-step explanation:

When a number has another number in parentheses by it, it means you multiply the numbers together. So 4(5) is the same as 4 times 5, which equals 20

5 0
3 years ago
Read 2 more answers
What is ten to the power of negative seven written as a number?
Ksenya-84 [330]

Answer:

0.0000010

Step-by-step explanation:

10^-7 = 0.0000010

5 0
4 years ago
Read 2 more answers
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