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Arturiano [62]
3 years ago
10

The sum of 9 and the quantity 2 times a number t.

Mathematics
1 answer:
noname [10]3 years ago
4 0

Answer:

the question says 9 added to (2×t)

2×t

added to 9

9+(2×t)

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List all the factors of 27.
monitta

Answer:

The factors for 27 are 1,27,3,9

5 0
3 years ago
Read 2 more answers
A parabola can be drawn given a focus of
Volgvan

Answer:

y=-\frac{1}{4}(x-2)^{2}+9

Step-by-step explanation:

Any point on a given parabola is equidistant from focus and directrix.

Given:

Focus of the parabola is at (2,8).

Directrix of the parabola is y=10.

Let (x,y) be any point on the parabola. Then, from the definition of a parabola,

Distance of (x,y) from focus = Distance of (x,y) from directrix.

Therefore,

\sqrt{(x-2)^{2}+(y-8)^{2}}=|y-10|

Squaring both sides, we get

(x-2)^{2}+(y-8)^{2}=(y-10)^{2}\\(x-2)^{2}=(y-10)^{2}-(y-8)^{2}\\(x-2)^{2}=(y-10+y-8)(y-10-(y-8))...............[\because a^{2}-b^{2}=(a+b)(a-b)]\\(x-2)^{2}=(2y-18)(y-10-y+8)\\(x-2)^{2}=2(y-9)(-2)\\(x-2)^{2}=-4(y-9)\\y-9=-\frac{1}{4}(x-2)^{2}\\y=-\frac{1}{4}(x-2)^{2}+9

Hence, the equation of the parabola is y=-\frac{1}{4}(x-2)^{2}+9.

4 0
3 years ago
Which word best describes the degree of overlap between the two data sets?
snow_tiger [21]

Answer:

Moderate

Step-by-step explanation:

I think sorry if its wrong

6 0
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27. TEMPERATURE Eleven Fahrenheit temperatures are shown on a map during
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Answer:

5 negative numbers

Step-by-step explanation:

-5 -4 -3 -2 -1 0 1 2 3 4 5

1  2  3  4  5 6 7 8 9 10 11

6 0
3 years ago
If the perimeter is 86 inches, what is the length of the shortest sides
svet-max [94.6K]

Since perimeter means adding all 4 sides, you divide 86 divided by 4 equals = 21.5. Then do 21.5 + 21.5 which equals 43. And 43 + 43 = 86. So two sides are 21.5, and the other two sides are 43. So 21.5 <  43. 21.5 is the shortest sides. Hope this Helps!


8 0
3 years ago
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