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lana66690 [7]
3 years ago
6

Please help. Only if you know it.

Mathematics
1 answer:
andrew11 [14]3 years ago
5 0

Answer:

C (Lake Depth Answer)

Step-by-step explanation:

Here we want to find the math that <u>ends up with 0</u>.

The stock starts with 12$, but loses 16$.

That's -4$ total, not 0.

The ion starts with 19 protons, and 18 electrons. Protons are postive charges, electrons are negative.

This leaves us with 1 proton, not 0.

The lake depth increases by 6 inches, but evaporates 6.

This leaves us back where we started, with 0.

Ahmed spends 25$, but earns 30$.

This leaves us with $5, not 0.

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Please help. will grant brainliest !
Igoryamba

Answer:

45

Step-by-step explanation:

Substitute i = 1, 2, 3, 4, 5 into the expression and sum the terms

3(1) + 3(2) + 3(3) + 3(4) + 3(5)

= 3 + 6 + 9 + 12 + 15

= 45

7 0
3 years ago
Could someone answer asap? I only need to answer part D help would be amazing!!! You will get Brainliest if answered within 10 m
Elena L [17]
The two cordnets are 5,8 ok brainliest :)
8 0
3 years ago
After t seconds a ball tossed In the air from the ground level reaches a height and of h feet given by the function h(t)=144t-16
Lana71 [14]

Answer:

Check the explantion

Step-by-step explanation:

H(t) represent the height of the ball after t seconds.

1)

In order to figure the maximum height of the ball we must minupulate this equation into a form where we can easily find the maximum height.

We can also see this parabola will be downward concaved because it has a negative coefficent for the t^2 term.

a) Let's Manipulate!

Vertex form is a form where we can easily tell the maximum and minimum points. To get in into Vertex form we just need to complete the sqaure.

Lets reanrage the terms

h(t)= -16t^2+144t

Undo the distrubitive propety

h(t)= -16(t^2-9t+20.25)+324

Add and subtract 324.

h(t) = -16(t-4.5)^2+324

COmplete the square.

b) Almost done!

We can now see that the stuff with the brackets is always positive/zero because any real number sqaured is a positive/zero. But than we multiply the positive stuff by a negative number (-16) so its now all negative.

The only exception is when its zero.

And off course if we add 324 to zero its always going to be greater than 324 + a negative number. To get the first term to be zero we can have t = 4.5.

c) Proove it!

h(4.5) = -16(4.5-4.5)^2+324

=324

d) Double Check by graphing!

(Its a attach screenshote by the way)

e) Answer:

The ball will reach its maximum height after 4.5 seconds.

Hoped this helped!,

JoeLouis2

4 0
3 years ago
If one gallon of paint overs 825 sq.ft how much paint is needed to cover 2640 st .ft
damaskus [11]

If 1 gallon covers 825 sq ft then look at this :

825 times 3 gallons would cover 2,475 sq ft

825 times 4 gallons would cover 3,300 sq ft

You would need the 4 gallons to cover because 3 gallons wouldn’t be enough

5 0
3 years ago
Daniel bought 25 tokens when he arrived at the festival. He won 11 more tokens for getting the highest score at the basketball c
Anika [276]

Answer:

32

Step-by-step explanation:

well if we add 25 to 11 we get 36 but then we have to subtract 4 witch will give you 32

4 0
3 years ago
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