Answer:
6.5 seconds
Step-by-step explanation:
Ok so the equation you gave is -16T^2 + 676 in the comments which is what I'll be using for this problem. The problem is really just asking you to find the zeroes of the equation excluding any negative solutions since that doesn't really represent anything in this context since T is time.
So the first step is to set the equation equal to 0
.
Subtract 676 from both equations.
Divide both sides by -16
Take the square root of both sides
Ignore the negative and take only the positive solution, since in this context it doesn't make much sense. So after 6.5 seconds the height is 0, meaning it hits the ground after 6.5 seconds.
Answer:
This is a question about accepted idiomatic usage and level of formality rather than a question of grammar. These forms are not technically “grammatically incorrect,” but neither are accepted idiomatic usage. If you want to be fluent in your usage, and you are willing to come off as formal and a bit peremptory and demanding, you would say, “I would appreciate it if you …” But unless you want to convey impatient formality, you would probably want to say instead, “I would be grateful if you …”
You would probably never in any circumstance say "I will appreciate if you.." or "I would appreciate if you.."
Step-by-step explanation:
And you would also probably never even say "I will appreciate it if you.." This is just not the way English speakers speak. One reason you wouldn’t say “I will appreciate it” (besides the fact that it would sound impatient) is that you need to use the subjunctive “would” when you are using “if,” instead of the predictive “will.” You are only predicting that if a hypothetical event occurs, appreciation will occur. For instance: You impatiently say, “I would appreciate it if you would pay your rent.” You are predicting (or sarcastically claiming to predict) that if the rent is paid, you will be appreciative.
The roof is made up of 2 similar pieces of 2 rectangle shapes.
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Area of a rectangle = Length x Width
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Area of a rectangle = 50 x 14 = 700 ft²
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Area of 2 rectangle pieces:
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Area of 2 rectangle pieces = 700 x 2 = 1400 ft²
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Find the cost:
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1ft² = $2.75
1400 ft² = 2.75 x 1400
1400 ft² = $3850
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Answer: It will cost $3850 to have the roof replaced. (Answer A)
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