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Harrizon [31]
2 years ago
15

The graph of which function is decreasing over the interval (–4, [infinity])? f(x) = (x 4)2 4 f(x) = –(x 4)2 4 f(x) = (x – 4)2 –

4 f(x) = –(x – 4)2 – 4.
SAT
1 answer:
Vinvika [58]2 years ago
8 0
I need help my self lol XD
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Which of the following is the most likely reason the writers of the constitution did not define american citizenship
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B.They do not want to limit the right of individuals.
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During which phase is the least percentage of the light that hits the moon visible from earth?
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I believe it is a waning crescent

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*SAT QUESTION*
denis23 [38]

Answer and Explanation:

Greetings!

Let's~answer~your~question!

Triangle~ ABC ~is ~a ~right~ triangle~ with ~its~ right~ angle ~at ~B. ~Therefore,~AC\\is~ the~ hypotenuse~ of~ right~ triangle~ ABC,~ and~ AB ~and ~BC ~are~ the~ legs~ of~ right~\\ triangle ~ABC.

According~ to~ the~ Pythagorean ~theorem,

AB=\sqrt{20^2-16^2}=\sqrt{400-256}=\sqrt{144}=12

Since ~triangle~DEF~is ~similar~ to~ triangle~ ABC,~ with~ vertex ~F ~corresponding~to~ vertex~ C,~ the~ measure\\ of~angle~ \angle F~equals~ the~ measure~ of~ angle~\angle C.

Therefore,~ sinF=sinC. ~From ~the~ side~ lengths~ of ~triangle~ ABC,

sinF=\frac{opposite ~side}{hypotenuse} =\frac{AB}{AC} =\frac{12}{20}=\frac{3}{5}

Therfore, ~sinF=\frac{3}{5}~or~0.6

3 0
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In casting experiments performed using a certain alloy.
jeyben [28]
Answer:
A) Cm = 2.232 s/mm²
B) Time taken to solidify = 74.3 seconds
Explanation:
(A) Since a side is 50mm and all sides of a cube are equal, thus, Volume of the cube is;V = 50 x 50 x 50 = 125,000 mm³
There are 6 faces of the cube, thus Surface Area A = 6 x (50 x 50) = 15,000 mm²
So, Volume/Area = (V/A) = 125,000/15,000 = 8.333 mm
Cm is given by the formula; Cm =[Tts] /(V/A)² where Tts is time taken to solidify and it's 155 seconds in the question. Thus;
Cm = 155/(8.333)²= 2.232 s/mm²
(B) For;Cylindrical casting with D = 30 mm and L = 50 mm.;
Volume of cylinder is;
V = (πD²L) /4
So,V = (π x 30² x 50)/4 = 35,343mm³
Surface area of cylinder is;
A = (2πD²)/4 + (πDL)
Thus, A = ((π x 30²)/2) + (π x 30 x 50) = 6126 mm²
Volume/Area is;
V/A = 35,343/6126 = 5.77 mm
Same alloy and mold type was hsed as in a above, thus, Cm is still 2.232 s/mm²
Since Cm =[Tts] /(V/A)²
Making Tts the subject, we have;
Tts =Cm x (V/A)²
Tts = 2.232 x (5.77)² = 74.3 seconds
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2 years ago
Which piece of evidence best reveals norma's curiosity toward mr. Steward's offer?.
scZoUnD [109]

Answer:

“Norma closed her eyes. Fifty thousand doallars, she thought.” (Paragraph 69)


Explanation: I had this assignment as well :)

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