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Reptile [31]
3 years ago
12

Find the axis of symmetry for y=3x^2 +5x-7

Mathematics
1 answer:
slamgirl [31]3 years ago
5 0
A = the number before x^2 = 3
b = the number before x = 5
To find the axis of symmetry: -b/2a
x = -5/6

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Evaluate sin(<br> 5π<br> 3<br> ).
azamat

Answer:

=−0.888168

Step-by-step explanation:

sin(5(3.1415933))

=sin((5)(31.006277))

=sin(155.031383)

=−0.888168

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8 0
3 years ago
A rock is thrown up from the ground at a velocity of 84 feet per second. The formula h = -16t2 + 84t gives the rock's height in
kenny6666 [7]

Answer:

h = 110.24 m

Step-by-step explanation:

It is given that,

A rock is thrown up from the ground at a velocity of 84 feet per second. The formula h = -16t^2 + 84t gives the rock's height in feet after t second.

We need to find the maximum height of the rock. For maximum height put \dfrac{dh}{dt}=0

So,

\dfrac{d( -16t^2 + 84t)}{dt}=0\\\\-32t+84=0\\\\t=\dfrac{84}{32}\\\\t=2.62\ s

Put t = 2.62 s in the equation of height. So,

h = -16(2.62)^2 + 84(2.62)\\\\h=110.24\ m

So, the maximum height of the rock is 110.24 m.

7 0
3 years ago
The 24 students in Ms.Lee class each collected an average of 18 cans for recycling the 21 students in mr galvez class each colle
puteri [66]
This is a case for multiplication of #Students by#Cans and then subtract.

Ms Lee.........
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Mr Galvez...21 students × 25 cans = 525

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6 0
3 years ago
Read 2 more answers
Find the coordinates of the midpoint of a segment having the given endpoints.
BartSMP [9]
X² + x¹ 11+1
--------- =. ------= 6
2. 2


y² + y¹. 5+(-3).
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3 0
3 years ago
Read 2 more answers
Are alternate interior angles supplementary?
Naily [24]

Answer:

No.

Step-by-step explanation:

Alternate interior angles are congruent.

_____

<em>More about such angles</em>

Alternate exterior angles are congruent.

Same-side interior angles are supplementary.

Same-side exterior angles are supplementary.

Linear angles are supplementary.

8 0
3 years ago
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