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Sidana [21]
3 years ago
12

Workers preparing for the city's Fourth of July celebration shoot an object straight up with an initial velocity of 210 ft/s2 fr

om a height of 3 feet above the ground. Will the object reach a height of 670 feet 0, 1, or 2 times? Use the equation h=16t^2+vt+c where v is the initial velocity in feet per second and c is the initial height in feet of the object above the ground. Use the discriminant to explain your answer. Group of answer choices a) 2 times; The discriminant is positive, so the equation has two solutions. b) 0 times; The discriminant is negative, so the equation has no solutions. c) Cannot determine. There is no discriminant in the equation. d) 1 time; The discriminant is zero, so the equation has one solution.
Mathematics
1 answer:
madam [21]3 years ago
6 0

Answer:

C

Step-by-step explanation:

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A trash can in the shape of a cylinder has a radius of 26 cm and a height of 39 cm. Which of the following is closest to the vol
My name is Ann [436]

Answer:

The volume of cylindrical trash is 82,782.96 cm³  .

Step-by-step explanation:

Given as :

The shape of the trash is cylinder

The radius of cylinder = r = 26 cm

The height of cylinder = h = 39 cm

Let The volume of cylindrical trash = v cm³

<u>Now, According to question</u>

volume = \Pi \times radius^{2}\times height

where \pi = 3.14

So, v = 3.14 × r² × h

Or, v = 3.14 × (26)² × (39)

Or, v = 3.14 × 26,364

∴  v = 82,782.96 cm³

So, volume of cylindrical trash = v = 82,782.96 cm³

Hence, The volume of cylindrical trash is 82,782.96 cm³  . Answer

5 0
3 years ago
The mean of 4 numbers is 32. If three of the numbers are 15, 21, and 75, what is the value of the fourth number?
IgorLugansk [536]
If the mean is 32 and there is 4 numbers
then the numbers add to 32x4 which is 128
128-15-21-75=17
fourth number is 17
4 0
2 years ago
Read 2 more answers
A sound wave travels at 330m/s and has a wavelength of 2 m. calculate its frequency and period.
RoseWind [281]

Answer:

frequency= 165Hz

period= \frac{1}{165}

Step-by-step explanation:

1. To calculate the frequency using the formula:

f = v/λ

where,

f=frequency (what the question asked)

v=speed of wave (given in the question=330m/s)

λ=wavelength (given in the question=2m)

SO,

f=\frac{330}{2}

= 165Hz

2. To calculate the period use the formula:

since f=\frac{1}{T}

therefore, T=\frac{1}{f}

where,

f= frequency (what we solved above=165Hz)

T= period (what the question asked)

SO,

T=\frac{1}{165}

4 0
2 years ago
PLEASE HELP ME THIS IS DUE BY 1 P.M AND I REALLY NEED HELP
irga5000 [103]
It is not factored completely because it was only factored by 3ab but it could have been factored by 6a²b

6a²b(a+6+8a²)
5 0
3 years ago
7/10 people voted for team A. 3/5 of those people wore red caps. What fraction of those people wore red caps AND voted for team
sergejj [24]

Answer:

<em>21/50</em>

Step-by-step explanation:

Fraction that voted for team A = 7/10

Fraction of those that wear red cap = 3/5 of fraction of team A

Fraction of those that wear red cap = 3/5 of 7/10

Fraction of those that wear red cap = 3/5*7/10

Fraction of those that wear red cap = 21/50

<em>Hence the fraction of people that wear red cap is 21/50</em>

<em></em>

<em></em>

<em></em>

<em></em>

4 0
2 years ago
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