I'm not quite sure what this question means, but d = rt is a formula used to calculate the distance. the variables here are d for distance, r for rate, and t for time. if you need to solve it for t:

d = rt ... divide both sides by the rate (r)
(d/r) = t ... is your result

5 0

4 years ago

Please show working out

alekssr [168]

Answer:

x= 14.84cm

Step-by-step explanation:

cos(52)=x/28

cos(52)*28=x

x=14.84 cm

7 0

4 years ago

Read 2 more answers

уA 5-digit PIN number is selected. What it the probability that there are no repeated digits?hoThe probability that no numbers a

Ber [7]

Since there are 5 choices and there are 10 possible digits for each digit of the PIN( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9)

The total value possible 5 pins are 10⁵ = 100000

Using permutation, since 5 numbers are selected without repetition:

$\frac{n!}{(n-k)!}=\frac{10!}{(10-5)!}=30240$

The probability that no numbers are repeated is= 30240/ 100000

≈ 0.302

3 0

1 year ago