$s=\sqrt{30fd}~~ \begin{cases} f=\stackrel{friction}{factor}\\ d=\stackrel{skid}{feet}\\[-0.5em] \hrulefill\\ f=\stackrel{dry~day}{0.7}\\ d=75 \end{cases}\implies s=\sqrt{30(0.7)(75)}\implies s\approx 39.69~\frac{m}{h}$

nope, the analysis shows that Charlie was going faster than 35 m/h.

now, assuming Charlie was indeed going at 35 m/h, then his skid marks would have been

$s=\sqrt{30fd}~~ \begin{cases} f=\stackrel{friction}{factor}\\ d=\stackrel{skid}{feet}\\[-0.5em] \hrulefill\\ f=\stackrel{dry~day}{0.7}\\ s=35 \end{cases}\implies 35=\sqrt{30(0.7)d} \\\\\\ 35^2=30(0.7)d\implies \cfrac{35^2}{30(0.7)}=d\implies 58~ft\approx d$

4 0

2 years ago

A triangle has angles in the ratio 3:10:2 what is the size of the largest angle x?

Annette [7]

Answer:

Step-by-step explanation:

let the angles be 3k,10k,2k

then 3k+10k+2k=180

15k=180

k=180/15=12

x=10k=10×12=120°

5 0

3 years ago

The diagram below shows a square cardboard with an area of 132.25 cm ².A square of side x cm is cut and removed from each of its

PilotLPTM [1.2K]

Answer:

i think it's 10.6

Step-by-step explanation:

112 = x^2

4 0

3 years ago

Need an answer thanks

RUDIKE [14]

Find X:
38=(3x+4)+(5x-6)
combine like terms
38=8x-2
add 2 to both sides
40=8x
divide both sides by 8
5=x
Find AB:
16=3x+4
subtract 4 from both sides
12=3x
divide by 3
4=x
Find BC:
16=5x-6
add 6 to both sides
22=5x
divide both sides by 5

8 0

3 years ago

Olivia is half the age of her brother, Adam. Olivia's sister, Ava, is twice as old as Adam. Adam is 4 years old. How old is each

AnnZ [28]

Answer:

Step-by-step explanation:

Adam's age = 4 years

Ava's age = 2 * 4 = 8 years

Olivia's age = 4 ÷ 2 = 2 years

6 0

3 years ago

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