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Nikitich [7]
4 years ago
15

Write the quadratic equation whose coefficient with x2 equal to 1 and roots are:

Mathematics
1 answer:
vesna_86 [32]4 years ago
4 0

Answer:

x^{2}-\frac{5\sqrt{3}}{2}x+3

Step-by-step explanation:

we know that

The quadratic equation is equal to

(1)(x-\frac{\sqrt{3}}{2})(x-2\sqrt{3})\\ \\=x^{2} -2\sqrt{3}x-\frac{\sqrt{3}}{2}x+3\\ \\=x^{2}-\frac{5\sqrt{3}}{2}x+3      

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We are standing on the top of a 624 feet tall building and launch a small object upward. The object's vertical position, measure
rjkz [21]

Answer:

1024ft

Step-by-step explanation:

height of building = 624ft

h(t) = -16t^2 + 160t + 624

To find the, use -b/2a

a = -16, b = 160, c = 624

t = -160/ 2(-16)

t = -160 / -32

t = 5secs

The object will reach it's highest point after 5 seconds.

To find the highest point the object reaches, put t = 5 in h(t)

= -16(5)^2 + 160(5) + 624

= -16(25) + 800 + 624

= -400 + 800 + 624

= 400 + 624

= 1024ft

6 0
4 years ago
Which statement describes the point (4, 5) ? The point has an x-coordinate of 5 and a y-coordinate of 4. The point is located at
Dennis_Churaev [7]
<span>point (4, 5) means x = 4 and y = 5
so answer

</span><span> The point has an x-coordinate of 4 and a y-coordinate of 5</span>
3 0
4 years ago
Which equation is equivalent to -2(2 − 2x) = 4 − 8(1 − x)
Kay [80]

Answer:

8 = 4x OR 0 = 4x

Step-by-step explanation:

I not %100 sure or it could be 0 = 4x

EITHERONE

6 0
3 years ago
Maths help , whats a and b plsssssss
Bezzdna [24]

Step-by-step explanation:

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7 0
3 years ago
Peter babysits his sister on Monday and Friday. He babysits for his neighbor 40% of the days Monday through Friday. He babysits
allsm [11]

Answer:

<em>a) Peter babysits a total of 6 days each week.</em>

  • False

<em />

<em>b) Peter babysits either Saturday or Sunday.</em>

  • True

<em>c) Peter babysits 80% of the days Monday through Friday.</em>

  • True.

<em />

<em>d) Peter babysits 90% of the total days each week.</em>

  • False

Explanation:

<em>1. Peter babysits his sister on Monday and Friday. </em>

  • that is 2 days

<em>2. He babysits for his neighbor 40% of the days Monday through Friday. </em>

  • 40% of 5 days is 0.40 × 5 = 2 days

<em>3. He babysits for his sister and his neighbor on different days. </em>

  • Then, he babysits 2 + 2 = 4 days Monday through Friday.

<em>4. On the weekend, Peter babysits 50% of the days. </em>

  • That is one additional day, and makes a total of 5 days in a weak.

<em></em>

<em>Statements:</em>

<em />

<em>a) Peter babysits a total of 6 days each week.</em>

  • False: we calculated 5 days in a week.

<em />

<em>b) Peter babysits either Saturday or Sunday.</em>

  • True: since, on the weekends he babysits 50% of the days: that is one day which may be either Saturday or Sunday.

<em>c) Peter babysits 80% of the days Monday through Friday.</em>

  • 80% of 5 is 0.8 × 5 = 4, which is what we calculated on the point 3 above. Then, it is true.

<em />

<em>d) Peter babysits 90% of the total days each week.</em>

  • 90% of 7 is 0.9 × 7 = 6.3. On point 4 above, we calculated that he babysits 5 days in a week. Thus, this is false.
4 0
3 years ago
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