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Mekhanik [1.2K]
3 years ago
9

Plz help me with this

Mathematics
2 answers:
enyata [817]3 years ago
5 0

I’m pretty sure the answer is B.

pashok25 [27]3 years ago
5 0

Answer:   \bold{b)\quad \dfrac{-2\pm \sqrt{14}}{2}}

<u>Step-by-step explanation:</u>

2x^2+4x-5=0\qquad \implies\qquad a=2,\ b=4,\ c=-5\\\\\text{The quadratic equation is not factorable so use the Quadratic Formula:}\\x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\\x=\dfrac{-4\pm \sqrt{4^2-4(2)(-5)}}{2(2)}\\\\\\.\ =\dfrac{-4\pm \sqrt{16+40}}{4}\\\\\\.\ =\dfrac{-4\pm \sqrt{56}}{4}\\\\\\.\ =\dfrac{-4\pm 2\sqrt{14}}{4}\\\\\\.\ =\large\boxed{\dfrac{-2\pm \sqrt{14}}{2}}

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Select the correct answer.
Marina CMI [18]

The concept of historical cost in accounting involves valuing business resources at their purchase price. This is further explained below.

<h3>What is the historical cost?</h3>

Generally, historical cost is a value of measure used in accounting that records the value of an asset on the balance sheet at its original cost when purchased by the firm.

In conclusion, valuing business resources at their purchase price is what historical cost is about.

Read more about Business

brainly.com/question/10295065

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5 0
2 years ago
Read 2 more answers
According to a study, an average of six cell phone thefts is reported in San Francisco per day. Assume that the number of report
lions [1.4K]

Answer:0.29

Step-by-step explanation:

An average of six cell phone thefts is reported in San Francisco per day. This means our mean value, u = 6

For poisson distribution,

P(x=r) = (e^-u×u^r)/r!

probability that four cell phones will be reported stolen tomorrow=

P(x=4)= (e^-6×6^4)/4!

= (0.00248×1296)/4×3×2×1

= 3.21408/24=

0.13392

P(x=5)= (e^-6×6^5)/5!

= (0.00248×7776)/5×4×3×2×1

= 19.28448/120

= 0.1607

probability that four or five cell phones will be reported stolen tomorrow

= P(x=4) + P(x=5)

= 0.13392 + 0.1607

= 0.294624

Approximately 0.29

8 0
3 years ago
Plz answer!!!!!!!!!!!!!!​
makkiz [27]

Answer:

7

Step-by-step explanation:

i know

7 0
2 years ago
Can someone please help me I really need help please help me help thank you
KiRa [710]
That is a isosceles triangle, therefore x and the top angle are the same.

There’s 180 degrees in a triangle.

Therefore:

(180 - 38)/2 = x
142/2 = x
71 = x
7 0
3 years ago
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What is the surface area of the triangular prism?<br> In square feet
vampirchik [111]

Answer:

The surface of the triangular prism is 12 ft

Step-by-step explanation:

To find the surface area you have to multiply the base and the height and divide the product by 2

6 ft= base

4 ft= height

6 x 4 = 24

24 divided by 2 = 12

6 0
3 years ago
Read 2 more answers
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