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IrinaVladis [17]
3 years ago
7

Order each number greatest to least 1/2, -2, square root of 5, -7/4, 2.4PLEASE HELP ME

Mathematics
1 answer:
Luden [163]3 years ago
4 0

Answer:

I think its

2.4, square root of 5, 1/2, -7/4, -2

hope this helps :D

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Isabella flew 5 miles per minute!
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The height of water shooting from a fountain is modeled by the function f(x) = −0.2x2 − 2.8x − 5.4 where x is the distance from
balandron [24]
Start by setting the function equal to 0 and then moving the -5.4 over to the other side of the equals sign.  -.2 x^{2} -2.8x=5.4.  The first rule for completing the square is that the leading coefficient be a +1.  Ours is a -.2.  So we need to factor it out. -.2( x^{2} +14x)=5.4.  Now we will take half the linear term, square it, and add it to both sides.  Our linear term is 14.  Half of 14 is 7, and 7 squared is 49.  So we add 49 in to the left side just fine, but we cannot forget about that -.2 hanging around out front as a multiplier.  What we have actually "added" in is -.2*49 which is -9.8.  Now here's what we have after all that: -.2( x^{2} +14x+49)=5.4-9.8.  In that process, we have created a perfect square binomial on the left.  Along with expressing that binomial we will do the math on the right: -.2(x+7) ^{2} =-4.4.  Now we will move the -4.4 back over by addition, and it will then be apparent as to what our vertex is.  The y coordinate of the vertex will give us the max height of the water.  -.2(x+7) +4.4=y.  As you can see, our work matches choice C from above.
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3 years ago
On a test with 30 questions, Bill answered 80% correctly. How many<br> answers did he get wrong?
AveGali [126]

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3 years ago
Find the sine of Write your answer in simplified, rationalized form. Do not round.<br> Please help!!!!!
erma4kov [3.2K]

Answer:

Sin (E) = √74/(2√23)

Step-by-step explanation:

Reference Angle = E

Hypotenuse = 2√23

Adjacent = 3√2

Opposite = DC = √(2√23)² - (3√2)²) = √(4*23 - 9*2) = √(92 - 18) = √74 (pythagorean theorem)

Recall SOHCAHTOA.

Thus,

Sin (E) = opp/hyp

Sin (E) = √74/(2√23)

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2 years ago
What is the range of the function represented by the graph?<br> I need help ASAP
kumpel [21]

Step-by-step explanation:

The range of a function is basically the y-value of the lowest point in the function and the y-value of the highest point in the function.

In the graph shown, the lowest point is (0,1) and the highest is (3, 4). Their y-values are 1 and 4 respectively.

The points are not connected in a straight line. Instead, they are separate points with a difference of 1 in their y-values.

So the answer is {1, 2, 3, 4}

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