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3 years ago

X^2-10x+8=0 by completing the square

Mathematics

1 answer:

OverLord2011 [107]3 years ago

4 0

When completing the square <span>x=9.12311 and </span><span>x=<span>0.876894</span></span>

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Refer to the sequence 11, 16, 21, 26, 31, 36. Explain why the terms in the sequence will continue to alternate between even and

Debora [2.8K]

Explanation:

The common difference of this arithmetic sequence is 5. Adding 5 to an even number gives an odd number, and vice versa. Hence the "parity" of the terms in the sequence must alternate between odd and even.

8 0

3 years ago

the height of a ball dropped from a 160 foot building after t seconds is represented by h(t)=160-16t^2.how high will the ball be

alekssr [168]

Answer:

The height of the ball after 3 secs of dropping is 16 feet.

Step-by-step explanation:

Given:

height from which the ball is dropped = 160 foot

Time = t seconds

Function h(t)=160-16t^2.

To Find:

High will the ball be after 3 seconds = ?

Solution:

Here the time ‘t’ is already given to us as 3 secs.

We also have the relationship between the height and time given to us in the question.

So, to find the height at which the ball will be 3 secs after dropping we have to insert 3 secs in palce of ‘t’ as follows:

$h(3)=160-16(3)^2$

$h(3)=160-16 \times 9$

h(3)=160-144

h(3)=16

Therefore, the height of the ball after 3 secs of dropping is 16 feet.

8 0

2 years ago

Find the area. please help me!

Law Incorporation [45]

1.
15 × 12× 20
3600

2.
2×2×3
12

3.
24.3×8.5×9.7
2003.535

4 0

2 years ago

Which of the following is a trinomial with a constant term.

Sunny_sXe [5.5K]

<h2>The "option d: $y^5$ + 13x + 12" is a trinomial with a constant term.</h2>

Step-by-step explanation:

To check options:

a: x + 4y

Here, the coefficient of x = 1 and the coefficient of y = 4

b: $x^3$

Here, the coefficient of $x^3$ = 1

c: $x^4$ + 3 $y^2$ + 2y

Here, the coefficient of $x^4$ = 1, the coefficient of $y^2$ = 4 and the coefficient of y = 2

d: $y^5$ + 13x + 12

Here, the coefficient of $y^5$ = 1, the coefficient of x = 13 and

constant term = 12

Thus, the "option d) $y^5$ + 13x + 12" is a trinomial with a constant term.

6 0

2 years ago

The third term in an arithmetic sequence is 58 and the fifth term is 90. if the first term is a1, which is an equation for the n

kiruha [24]

The third term in an arithmetic sequence is 58 and the fifth term is 90. if the first term is a1, which is an equation for the nth term of this sequence?
1. an = 8n + 10
2. an = 8n − 14
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4. an = 16n − 38

3 0

2 years ago