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3 years ago

I just need help in this last question plsssss

Mathematics

1 answer:

finlep [7]3 years ago

8 0

Answer:

B) 0.8

Step-by-step explanation:

If events are said to be independent, then just multiply the probability of the first event by the second if they are supposed to be happening together.

P (A) * P (B) = 0.8 x 1 = 0.8

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The cost of a can ride , y, based on the number of miles driven , x, is represented by

lozanna [386]

Answer:

Step-by-step explanation:

y = 0.80x + 2.50

a 7 mile ride......x = 7

y = 0.80(7) + 2.50

y = 5.60 + 2.50

y = 8.10 <=== the 7 mile ride cost $ 8.10

the ride cost 13.70.....y = 13.70

13.70 = 0.80x + 2.50

13.70 - 2.50 = 0.80x

11.2 = 0.80x

11.2 / 0.80 = x

14 = x <=== u travel 14 miles

7 0

3 years ago

Ill mark brainlist plss help

harina [27]

Answer:

C. 99 yd^2

Step-by-step explanation:

The formula for solving for area of a triangle is 1/2*b*h.

18*11=198

198/2=99

4 0

3 years ago

Match each equation to a solution. 2X=64

Marysya12 [62]

X=32

2x=64 divide each side by 2

5 0

3 years ago

A particle moves in a straight line so that its velocity at time

riadik2000 [5.3K]

Answer:

s(2) = 7.75

Step-by-step explanation:

given the velocity v(t) = t^3

we can find the position s(t) by simply integrating v(t) and using the boundary conditions s(1)=2

$s(t) = \int {v(t)} \, dt\\ s(t) = \int {t^3} \, dt\\s(t) = \dfrac{t^4}{4}+c$

we know throught s(1) = 2, that at t=1, s =2. we can use this to find the value of the constant c.

$s(1) = \dfrac{1^4}{4}+c\\4 = \dfrac{1^4}{4}+c\\c = 4-\dfrac{1}{4}\\c = \dfrac{15}{4} = 3.75$

Now we can use this value of t to formulate the position function s(t):

$s(t) = \dfrac{t^4}{4}+\dfrac{15}{4}\\$

this is the position at time t.

to find the position at t=2

$s(2) = \dfrac{2^4}{4}+\dfrac{15}{4}\\$

$s(2) = \dfrac{31}{4} = 7.75$

the position of the particle at time, t =2 is s(2) = 7.75

3 0

3 years ago

{2 x [16 - ( 4 + 5 ) ] } + 10 a) 43 b) 33 c) 34 d) 24

Arlecino [84]

34
Simplify the expression

7 0

3 years ago