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elena-14-01-66 [18.8K]

3 years ago

7

Container consists of two red flags, three blue flags, and three green flags. If Ron chooses two flags to keep, what is the prob

ability of choosing a red flag and then a green

1 answer:

miv72 [106K]3 years ago

7 0

2/8 because you add all th flags toether and there are only 2 red flags

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(1+i/1-i)square root m

dsp73

M to the power 4 squared minus 23

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3 years ago

A projectile is thrown upward so that its distance above the ground after t seconds is h =-13t2 + 390t. After how many seconds d

sertanlavr [38]

Answer:

<h3>The option C) 15 s is correct</h3><h3>Therefore the maximum height it reaches in <u>15 seconds. </u></h3>

Step-by-step explanation:

Given equation is $h =-13t^2 + 390t$

Given that a projectile is thrown upward so that its distance above the ground after t seconds is $h =-13t^2 + 390t$

<h3>To find how many seconds does it reach its maximum height:</h3>

"The standard form of a parabola's equation is expressed as :

$y=ax^2+bx+c$ .

If $a>0$ , then the parabola opens upwards;

if $a$ the parabola opens downwards."

The maximum height is the vertex of the parabola $h =-13t^2 + 390t$ which is $\frac{-b}{2a}$ .

Comparing the given equation with the standard form of parabola we get

the values of a=-13 , b=390 and c=0

The maximum height in $t=\frac{-b}{2a}$ .

Substitute the values we get

$t=-\frac{390}{2(-13)}$

$=\frac{390}{26}$

$=15$

<h3>∴ t=15 s</h3><h3>∴ The option C) 15 s is correct.</h3><h3>∴ the maximum height is the vertex of the parabola, at t reaches in 15 seconds. </h3>

3 0

3 years ago

A to the power of 0 multiply by A to the power of 6

alukav5142 [94]

Answer:

just a

Step-by-step explanation:

because if you do anything times by zero, it is zero.

6 0

3 years ago

Read 2 more answers

CAN SOMEBODY PLEASE HELP ME!!!!!!!!!!

lana66690 [7]

The answers to the blanks are

1. 600,

2. 120,

3. 120,

4. 180.

Explanation:

The fence means perimeter around the court. So a tennis court's perimeter is 600 feet fence. The perimeter of a rectangle is 2 times the sum of the rectangle's length and the rectangle's width.
It is given that length equals 60 more than width i.e. l = w + 60, where l is the length of the court and w is the width of the court.
The perimeter of a court = 600 = 2 (l + w) = 2l + 2w = 2 (w +60) + 2w, this becomes, 2w + 120 + 2w = 600; 4w = 480, w = 120.
Since l = w + 60, l = 120 + 60 = 180. So length of a court is 180 feet and the width of a court is 120 feet.

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3 years ago

Find the volume of the sphere. either enter an exact answer in terms of pi or use 3.14 . for point 6

Yakvenalex [24]

Answer:

sorry not sure

Step-by-step explanation:

7 0

4 years ago