1. *

Mathematics

1 answer:

Elenna [48]3 years ago

5 0

Answer:

(1) P(A) + P(B) - P(AB)

Step-by-step explanation:

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A projectile is launched from ground level with an initial velocity of v0 feet per second. Neglecting air resistance, its height

elena-s [515]

The formula is $s=-16t^2+V_ot$

We have:
$s=64$
$V_o=80ft/s$

Substituting these values into the formula, we have

$64=-16t^2+80t$

$16t^2-80t+64=0$ ⇒ divide each term by 16

$t^2-5t+4=0$ ⇒ find the pair of numbers that multiply to give 4 and sum gives -5 which is -1 and -4

$(t-1)(t-4)=0$ ⇒ We have two values of t

$t-1=0$ ⇒ $t=1$
$t-4=0$ ⇒ $t=4$

The time when the projectile reached 64 feet is at t=1 and t=4

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3 years ago

The formula d = rt gives the distance traveled in time t at rate r. A bicyclist rides for 1.25 hours and travels 32 miles.

Nat2105 [25]

divide distance by time

32 /1.25 = 25.6 miles per hour

3 0

3 years ago

Sheena wants to measure the volume of a ball that is 24 cm across. How should she set up her equation?

Annette [7]

Answer:

The volume of the ball is $V=2,304\pi\ cm^{3}$ or $V=7,234.56\ cm^{3}$