3 years ago

Please answer this to the best of your ability

Mathematics

1 answer:

Lapatulllka [165]3 years ago

4 0

F(x)=-4 f(x)=-1 f(x)=5

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Twenty percent of the ice melted. If 680 grams<br> remained, how many grams melted?

musickatia [10]

Answer:

−33999/50

Step-by-step explanation:

2/100−680

1/50−680

−33999/50

5 0

3 years ago

38 plus what equals 99

mote1985 [20]

To figure that out you could do 99 minus 38, which would lead you to your answer 61.

7 0

3 years ago

A ball is shot into the air using a brand new super-high-tech robotic arm to help baseball players practice catch fly balls.

stepladder [879]

Answer:

69 feet

Step-by-step explanation:

we have

$h(t)=-16t^{2}+64t+5$

where

h(t) is the height of the ball

t is the time in seconds

we know that the given equation is a vertical parabola open downward

The vertex is the maximum

the y-coordinate of the vertex represent the maximum height of the ball

Convert the quadratic equation into vertex form

The equation in vertex form is equal to

$y=(x-h)^{2}+k$

where

(h,k) is the vertex of the parabola

$h(t)=-16t^{2}+64t+5$

$h(t)-5=-16t^{2}+64t$

$h(t)-5=-16(t^{2}-4t)$

$h(t)-5-64=-16(t^{2}-4t+4)$

$h(t)-69=-16(t^{2}-4t+4)$

$h(t)-69=-16(t-2)^{2}$

$h(t)=-16(t-2)^{2}+69$

the vertex is the point (2,69)

therefore

The maximum height is 69 ft

6 0

3 years ago

Select the correct answer. Chloe enjoys her math classes, and she would like to find a career that will allow her to continue to

Arte-miy333 [17]

It would have to be an Accountant.

6 0

3 years ago

Read 2 more answers

A jogger goes 1.5km west and then turns south.If the jogger finishes 1.7 km from the starting point,how far south did the jogger

kakasveta [241]

Hello!

You can use the Pythagorean Theorem to solve this

$a^{2} + b^{2} = c^{2}$

c is the hypotenuse
a and b are the legs

Put in the values you know

$1.5^{2} + b^{2} = 1.7^{2}$

Square the numbers

$2.25+ b^{2} =2.89$

Subtract 2.25 from both sides

$b^{2} =0.64$

Take the square root of both sides

b = 0.8

The answer is 0.8km

Hope this helps!

6 0

3 years ago