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makvit [3.9K]
3 years ago
15

Plss answer ill give brainliest pls pls

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
8 0

Answer:

56

Step-by-step explanation:

5x+80=360

5x=280

x=56

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What is a formula for the nth term of the given sequence? 15, 24, 33
KatRina [158]

Answer:

The nth terms: 15,24,33,42,51,60,69,78,87,96,105...

Step-by-step explanation:

The nth term of an arithmetic sequence is given by an = a + (n – 1)d. So, to find the nth term, substitute the given values a = 2 and d = 3 into the formula

5 0
3 years ago
Solve the problem. The systolic blood pressures of the patients at a hospital are normally distributed with a mean of 136mm Hg a
shtirl [24]
<span> we know that the 90 percentile in Z-score is ≈ 1.28 then,
=136 ± 1.28(13.8)
=(118.336 , 153.664)
</span>hope it helps
6 0
3 years ago
Which equation represents a line which is parallel to the x-axis?
geniusboy [140]

Answer:

3?

Step-by-step explanation:

7 0
3 years ago
From a view tower 30 metres above the ground, the angle of depression of an object on the ground is 30 and the angle of elevatio
kompoz [17]

Answer:

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8 0
3 years ago
What are the two solutions of 2x2 = –x2 – 5x – 1?
77julia77 [94]

Answer:

The answer is

<h3>x =  \frac{ - 5 +  \sqrt{13} }{6}  \:  \:  \:  \: or \:  \:  \: x  =  \frac{ - 5 -  \sqrt{13} }{6}</h3>

Step-by-step explanation:

2x² = - x² - 5x - 1

<u>Rearrange the terms and simplify</u>

That's

2x² + x² + 5x + 1 = 0

3x² + 5x + 1 = 0

Using the quadratic formula solve the equation

That's

<h3>x =  \frac{ - b\pm \sqrt{ {b}^{2}  - 4ac} }{2a}</h3>

From the question

a = 3 , b = 5 , c = 1

So we have

<h3>x =  \frac{ - 5\pm \sqrt{ {5}^{2} - 4(3)(1) }}{2(3)}  \\  =  \frac{ - 5\pm \sqrt{25 - 12} }{6}  \\   = \frac{  - 5\pm \sqrt{13} }{6}</h3>

We have the final answer as

<h3>x =  \frac{ - 5 +  \sqrt{13} }{6}  \:  \:  \:  \: or \:  \:  \: x  =  \frac{ - 5 -  \sqrt{13} }{6}</h3>

Hope this helps you

4 0
3 years ago
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