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vesna_86 [32]
3 years ago
6

In grade 9 high school to get an honor roll do they look at your midterm marks or do they look at your final marks. I have two s

emesters and live in Canada.
Mathematics
1 answer:
BartSMP [9]3 years ago
5 0

Answer:

Tortileni

Step-by-step explanation:

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Last one!! I need the steps please! Will mark brainliest!
hoa [83]

Answer:

h(t)=-6(t-2)^2+24

Step-by-step explanation:

Given function:

h(t)=-6t^2+24t

where:

  • h = height (in feet)
  • t = times (in seconds)

Rewrite in the form h(t)=a(t-h)^2+k

The quickest way to do this is to expand h(t)=a(t-h)^2+k and compare coefficients with the original function.

\begin{aligned}h(t)& =a(t-h)^2+k\\ & = at^2-2aht+ah^2+k\end{aligned}

Comparing coefficients with h(t)=-6t^2+24t

\begin{aligned}\implies at^2& =-6t^2\\ a &=-6\end{aligned}

\begin{aligned}\implies -2aht & =24t\\ -2(-6)ht& =24t\\ 12ht & = 24t\\ 12h & = 24\\ h & = 2\end{aligned}

\begin{aligned}\implies ah^2+k & = 0\\(-6)(2)^2+k &=0\\ -24+k & =0\\ k &=24 \end{aligned}

Therefore, substituting the found values into the equation:

h(t)=-6(t-2)^2+24

6 0
2 years ago
Candy selling at $6.00 per pound will be mixed with candy selling at $9.00 per pound. How many pounds of the more expensive cand
Bezzdna [24]
Well you need the mixture to start off by equalling $7, no matter what weight it is. The mean of two $6 candies and one $9 candy is $7 (6+6+9 = 21, 21/3 = 7)
So the ratio of 2:1 6$:9$ makes $7

Add 2 and 1 to get 3, 15/3 = 5, and because you're working out how much you need for the $9 candy, 5*1 (Because of the 2:1 ratio) is 5
She needs 5 pounds worth of the 9$ candy
8 0
3 years ago
Which property is demonstrated by the equation            8+(9+3)=(8+9)+3.           The choices are commutative property of add
goblinko [34]

The property demonstrated is Associative property.
7 0
3 years ago
Read 2 more answers
How do I solve for x?
NISA [10]
Write and solve an equation of ratios based upon the fact that the small and large triangles shown are similar:

 5          6
---- = ---------
14      6 + x

Then 30 + 5x = 84, and 5x = 54, and so x = 54/5, or 10.8, or 10 4/5.
5 0
3 years ago
How do you round off 199,814.rounding off the the 9 beside comma
igor_vitrenko [27]
The number after the 9 is larger than 5 so you would round to
200,000.
8 0
3 years ago
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