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weqwewe [10]
3 years ago
15

PLEASE HELP ANYONE HELP ?!!!!!!!!!!!!!!!)))):::::

Mathematics
2 answers:
stealth61 [152]3 years ago
3 0

Answer:

3x

Step-by-step explanation:

givens: x=4

now try your options:

3(4)+3=15

12+3=15

15=15

The first option is correct, therefore the answer is 3x

GuDViN [60]3 years ago
3 0

Answer:  I think it is 3x

Step-by-step explanation: I've done this before.

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Find the roots of h(t) = (139kt)^2 − 69t + 80
Sonbull [250]

Answer:

The positive value of k will result in exactly one real root is approximately 0.028.

Step-by-step explanation:

Let h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80, roots are those values of t so that h(t) = 0. That is:

19321\cdot k^{2}\cdot t^{2}-69\cdot t + 80=0 (1)

Roots are determined analytically by the Quadratic Formula:

t = \frac{69\pm \sqrt{4761-6182720\cdot k^{2} }}{38642}

t = \frac{69}{38642} \pm \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321}  }

The smaller root is t = \frac{69}{38642} - \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321}  }, and the larger root is t = \frac{69}{38642} + \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321}  }.

h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80 has one real root when \frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} = 0. Then, we solve the discriminant for k:

\frac{80\cdot k^{2}}{19321} = \frac{4761}{1493204164}

k \approx \pm 0.028

The positive value of k will result in exactly one real root is approximately 0.028.

7 0
2 years ago
Given the image below, find the equivalent of tan ∠ QSR
seraphim [82]
I hope this helps you

3 0
3 years ago
What is the value of x? Then determine the measure of each angle. will brainlist first correct answer
kherson [118]

Answer:

Step-by-step explanation:

I have to go with 9r-18= -27 is my answer for your math

4 0
2 years ago
ALGEBRA 2 SIMPLIFY THE EXPRESSION
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Step-by-step explanation:

here's the answer to your question

7 0
3 years ago
Complete the solution of the equation. Find the value of y when x equals -15. -x ‒ 8y = -1
valkas [14]
To complete the solution of - x - 8y = -1, we first need to substitute x for -15.
As so:

-(-15) - 8y = -1
15 - 8y = -1

Next, we can subtract 15 from each side to get:

15 - 15 - 8y = -1 - 15
- 8y = -16

Now, we can divide by -8 on each side to get the y by itself:

-8y / -8 = -16 / -8 
y = -16 / -8
y = 2

There we go! <em>y</em> = 2 when x = -15! Hope I could help you out! Have a good one.
5 0
3 years ago
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