Answer:
no pic?
Step-by-step explanation:
Answer:
So average of a set of values is the sum of given values divided by the number of values
So, in this case the given values are 12, 9 , 4 , 8 ,7 and x (letting the 6th friend's time be x)
so the average will be:
(12 + 9 + 4 + 8 + 7 + x)/6 = 9
40 + x = 54
x = 54 - 40
x = 14 hours
Answer: y=mx+b
Step-by-step explanation:
The slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept. y=mx+b
Answer:
x=60
Step-by-step explanation:
First get x all alone on 1 side of the equation. Add 14.5 to both sides of the equation to cancel out the negative. You will then be left with
x/5= 12
Multiply both sides of the equation by 5 to cancel out the division and you'll get x=60
<u>by</u><u> </u><u>Pythagoras' theorem</u><u> </u>
<u>a²</u><u>+</u><u>b</u><u>²</u><u>=</u><u>c²</u>
<u>look</u><u> </u><u>to</u><u> </u><u>the</u><u> </u><u>figure</u>
<u>hight</u><u>+</u><u> </u><u>base</u><u>=</u><u> </u><u>perpendi</u><u>cular</u>
<u>base</u><u> </u><u>has</u><u> </u><u>4</u><u> </u><u>r</u><u>o</u><u>w</u><u> </u><u>blocks</u>
<u>hight</u><u> </u><u>has</u><u> </u><u>3</u><u> </u><u>row </u><u>blocks</u>
<u>simila</u><u>rly</u><u> </u><u>perpend</u><u>icular</u><u> </u><u>has</u><u> </u><u>5</u><u> </u><u>row blocks</u>
<u>apply</u><u> </u><u>formula</u><u> </u><u>you</u><u> </u><u>will</u><u> </u><u>get</u>
<u>3</u><u>²</u><u>+</u><u>4</u><u>²</u><u>=</u><u>5</u><u>²</u>