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elena-14-01-66 [18.8K]
3 years ago
9

RIGHT ANSWERS FOR BOTH 2 AND 3 I NEED HELP right answers :(

Mathematics
1 answer:
disa [49]3 years ago
5 0

Answer:

c and a

Step-by-step explanation:

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An arrow is shot vertically upward from a platform 19ft high at a rate of 163ft/sec. When will the arrow hit the ground? Use the
Triss [41]

Answer: 10.3 s

Step-by-step explanation:

Given

The height of the arrow is given by h=-16t^2+v_ot+h_o

At  t=0, h=19\ ftand v_o=163\ ft/s

When arrow hits ground, h becomes 0 i.e.

\Rightarrow 0=-16t^2+163t+19\\\Rightarrow 16t^2-163t-19=0\\\\\Rightarrow t=\dfrac{163\pm \sqrt{(-163)^2+4(16)(19)}}{2(16)}\\\\\Rightarrow t=-0.115,10.30\ s

Neglecting the negative value of t

So, the arrow hits the ground after 10.30 s

7 0
3 years ago
Find the elapsed time
liq [111]

Step-by-step explanation:

1.

4:15 p.m. to 5.00 p.m. → 45min

5:00 p.m. to 10:00 p.m. → 5h

Answer: 5h 45min

2.

3:45 a.m. to 4.00 a.m. → 15min

4.00 a.m. to 12:00 p.m. → 8h

Answer: 8h 15min

3.

1:15 p.m. to 2:00 p.m. → 45min

2:00 p.m. 8:00 p.m. → 6h

8:00 p.m. to 8:11 p.m. → 11min

Answer: 6h (45 + 11)min = 6h 56min

4.

2:37 a.m. to 3:00 a.m. → 23min

3:00 a.m. to 3:15 a.m. → 15min

Answer: (23 + 15)min = 38min

5.

11:59 a.m. to 12:00 p.m. → 1min

12:00 p.m. to 1:00 p.m. → 1h

1:00 p.m. to 1:01 p.m. → 1min

Answer: 1h (1 + 1)min = 1h 2min

6 0
4 years ago
What is the number that satisfies x is > or equal to 10
bonufazy [111]
Any number greater than 9
3 0
4 years ago
NEED HELP NOW 3 PHOTOS BELOW WRITE EACH QUESTION IN YOUR OWN WORDS AND IF YOU KNOW THE ANSWER SEND A PRIVATE MESSAGE TO ME AND J
Lena [83]
Remember you can do anything to an eqution as long as you do it to both sides

easy

first one
flat rate+variable rate=amount paid
flat rate=35
variable=15 times hours, so if h=hours then
and amount paied is 95
35+15h=95 is da equation
if we solve
mins 35 both sides and divide both sides by 15
h=4




2nd one
add 5 to both sides and times 4 both sides
c/4=9
c=36




3rd photo
add 6 to both sides
y+6-6≥12+6
y+0≥18
y≥18
7 0
3 years ago
PLEASE HELP ASAP I need the help :(
Gennadij [26K]

Answer:

Step-by-step explanation:

Where is the graph or whatever picture thats supposed to be present we,, I need to see the picture

8 0
3 years ago
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