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3 years ago

Please answer this correctly

Mathematics

1 answer:

marshall27 [118]3 years ago

6 0

Answer:

hello

Step-by-step explanation:

u sayh-e-l-l-o yW

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30 PTS!!!

Sphinxa [80]

Answer:

children = 177, adults =215

Step-by-step explanation:

im too lazy to write but solve this with a systeme

x(children),y(adults)

x+y=392

x=392-y

2.5y+1.25x=758.75

2.5y+1.25(392-y)=758.75

2.5y+490-1.25y=758.75

490+1.25y=758.75

1.25y=758.75-490

1.25y=268.75

y=268.75/1.25

y=215

x=392-215=177(number of kids)

6 0

2 years ago

Help please, will mark brainliest!

inysia [295]

Answer:

A is your answer

Step-by-step explanation: B is wrong because if it was -6 then it would equal -216

7 0

3 years ago

Read 2 more answers

What is four divided by negative six

____ [38]

-0.666666 (it’s recurring)

6 0

3 years ago

A ball is launched upward from a height 40 feet above ground level. The ball’s height at t seconds is given by -16t^2=128=40 .

Nesterboy [21]

Answer:

The ball will be at 100 feet at time x=0.5 sec and at time x=7.5 sec

Step-by-step explanation:

<u><em>The correct question is</em></u>

A ball is launched upward from a height 40 feet above ground level. the ball's height at t seconds is given by h(t)=-16t^2+128t+40 At what time(s) will the ball be at 100 feet?

we have

$h(t)=-16t^{2}+128t+40$

For h(t)=100 ft

substitute in the equation and solve for x

$-16t^{2}+128t+40=100$

$-16t^{2}+128t-60=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^{2}+128t-60=0$

$a=-16\\b=128\\c=-60$

substitute in the formula

$x=\frac{-128(+/-)\sqrt{128^{2}-4(-16)(-60)}} {2(-16)}$

$x=\frac{-128(+/-)\sqrt{12,544}} {-32}$

$x=\frac{-128(+/-)112} {-32}$

$x=\frac{-128(+)112} {-32}=0.5$

$x=\frac{-128(-)112} {-32}=7.5$

therefore

The ball will be at 100 feet at time x=0.5 sec and at time x=7.5 sec

7 0

4 years ago

How do you find a rectangular prisms height with length and width given

Naily [24]

If you are given the volume then you can solve
v=volume
h=height
l=legnth
w=width

hlw means h times l times w
v=hlw
so to find height divide both sdie sby lw
v/lw=hlw/lw
v/(lw)=h
so just divide volume by the quantity lengh times width
if you were given the volume

6 0

4 years ago