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grigory [225]
3 years ago
12

H=45t-4.9t^2 what's the max height?

Mathematics
1 answer:
const2013 [10]3 years ago
7 0
Differentiate to find time that gradient=0 45-9.8t=0 45=9.8t t =4.59 secs put this value into original equation to get 103.31
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Find the x value 4x-28 9x
andriy [413]

Answer: -5.6

Step-by-step explanation:

Simplifying

(4x + -28) = 9x

Reorder the terms:

(-28 + 4x) = 9x

Remove parenthesis around (-28 + 4x)

-28 + 4x = 9x

Solving

-28 + 4x = 9x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-9x' to each side of the equation.

-28 + 4x + -9x = 9x + -9x

Combine like terms: 4x + -9x = -5x

-28 + -5x = 9x + -9x

Combine like terms: 9x + -9x = 0

-28 + -5x = 0

Add '28' to each side of the equation.

-28 + 28 + -5x = 0 + 28

Combine like terms: -28 + 28 = 0

0 + -5x = 0 + 28

-5x = 0 + 28

Combine like terms: 0 + 28 = 28

-5x = 28

Divide each side by '-5'.

x = -5.6

Simplifying

x = -5.6

5 0
3 years ago
The graph shows that you are traveling at a constant rate. Three of the statements are true. Which is NOT?
Bess [88]

Answer:

Your speed is 135 miles per hour.

Step-by-step explanation:

Mark me brainliest if I helped:D

7 0
3 years ago
Which fraction is equivalent to the decimal 0.15?With the line over.
melisa1 [442]

Answer:

C.

Step-by-step explanation:

divide 100 and dive 15 by 5

7 0
2 years ago
Read 2 more answers
Solve for x.<br><br> −(−2−5x)+(−2)=18<br><br><br> x=−90<br><br> x=−185<br><br> x=185<br><br> x = 90
Shtirlitz [24]
-(-2-5x)+(-2)=18
2+5x-2=18
5x=18
x=18/5=3.6
5 0
2 years ago
Read 2 more answers
Someone please! Check the answer twice! I just want one wrong and that’s it please! NO FILES I SWEAR IF SOMEONE ADDS A FILE THEI
MakcuM [25]

Answer:

x = 55, because if you look the whole entire bar is 180° in total but you dont have to worry about that because that's not what the question is wanting you to look at, If you look really close there is a half and half on both sides so that means there is a 90° angle so you would have to take 90-35 and that is what gives you your missing angle which is 55.

5 0
2 years ago
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