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klio [65]
2 years ago
11

Please help pls pls help pls belp

Mathematics
1 answer:
Delvig [45]2 years ago
8 0

Answer:

After 1 second, the ball will reach a maximum height of 16 feet

Step-by-step explanation:

The height of the ball after t seconds: h(t) = -16t^2 + 32t

The graph of this quadratic function is parabola which opens downwards. The vertex of a quadratic equation is the maximum or minimum point on the equation's parabola

t = -b/2a = -(32)/2(-16) = -32/-32 = 1 second

then

h(t) = -16(1)^2 + 32(1) = -16 + 32 = 16

After 1 second, the ball will reach a maximum height of 16 feet

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2) If 3/5 of students carry an iPhone, what fraction of students is this using 75 as the denominator
kkurt [141]

Answer:

45/75

Step-by-step explanation:

75/5 = 15

15x3 = 45

8 0
3 years ago
Mr.Williams drew
tia_tia [17]

Answer: Answer C , Only student 2, because dilation preserve angle measures and side lengths are proportional

8 0
3 years ago
ADDITION OF INTEGERS<br> 21) 2 +6+-6<br> A) 0<br> B) 8<br> C) 1 D) 2
MrMuchimi

Answer:

D

Step-by-step explanation:

add up the positives then subtract the negative

5 0
3 years ago
I really dont get this please help just A, B, and C
alexandr402 [8]
The pic is kinda blurry so I can’t read it
4 0
3 years ago
A music festival charges $54.95 per ticket sold on the day of the event. A ticket purchases before the festival costs only $39.9
Wewaii [24]
B=number of ticets sold before
a=number of tickets sold after

cost of a ticket=number of tickets times cost per ticket
beforecost=39.95b
aftercost=54.95a

total cost=925000
39.95b+54.95a=925000

total number tickets=20000
b+a=20000

we have

39.95b+54.95a=925000
b+a=20000
multiply second equation by -39.95 and add to first equatin
39.95b+54.95a=925000
<u>-39.95b-39.95a=-799000 +</u>
0b+15a=126000

15a=126000
divide bot sides by 15
a=8400

sub back
b+a=20000
b+8400=20000
minus 8400 both sides
b=11600




11,600 tickets sold before
8400 tickets sold after
7 0
3 years ago
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