Answer:
29/61
Step-by-step explanation:
okay, first imma simplify the question a little bit.
122 students; 46 chose football; 18 chose tennis; 28girls + xboys chose running.
okay now let's find the number of students who chose running
122 - 46 - 18 = 58
now, I'll find the probability
P(Running) = 58/122 = 29/61
Topic: Probability
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Hello kiddio lets figure this out!
Let x = first
<span>y = second </span>
<span>Then </span>
<span>x - 5 = remainder of first </span>
<span>y - 13 = remainder of second </span>
<span>x - 5 = 2/3(y - 13) </span>
<span>3x - 15 = 2y - 26 </span>
<span>3x - 2y = - 11................(1) </span>
<span>x + y = 43....................(2) </span>
<span>From (2) y = 43 - x..........(3) </span>
<span>Put (3) in (1) </span>
<span>3x - 2(43 - x) = - 11 </span>
<span>3x - 86 + 2x = - 11 </span>
<span>5x = 75 </span>
<span>x = 15 cents </span>
<span>y = 43 - 15 </span>
<span>= 28 cents
</span>
Have a nice day
2) If we have 2 points K & M with their coordinates (x₁,y₁) & (x₂,y₂), the the distance of KM is given by the formula:
KM = √[(x₂-x₁)² + (y₂-y1)²] ; K(2,3) & M(5,1) (Given)
KM = √[(5-2)² + (1-3)²] ==>√(9+ 4) ==> KM = √13 (ANSWER D)
3) The coordinates are A(4,7) & B(-3,9). Follow & apply the same methodology as above:
AB =√[(x₂-x₁)² + (y₂-y1)²] ; A(4,7) & B(-3,9) (Given)
AB =√[(-3-4)² + (9-7)²] ==> AB = √[(-7)² + (2)²] ==> √(49+4) =√53 (B)
;
Answer: n77 into below
Step-by-step explanation:
N77 value = starting point + (77-1) x (5)
= -3 + (5)x76
U can do the calcs from here yeah?
Answer:
4.25 m
Step-by-step explanation:
Resolvemos esta pregunta usando la fórmula:
Altura del hombre / Sombra de un hombre = Altura del palo / Sombra del palo
Sombra del hombre = 3.50 m
Altura de un hombre = 1.75 m
Sombra del palo = 8.50 m
Altura del palo = x
Por lo tanto:
1.75 / 3.5 = x / 8.5
Cruz multiplicar
1.75 × 8.5 = 3.5 × x
14.875 = 3.5x
x = 14.875 / 3.5
x = 4.25 metros
Por tanto, la altura del palo = 4.25 m