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2 years ago

PLZ ANSWER!!! ONLY IF YOU ARE CORRECT!

Mathematics

1 answer:

olya-2409 [2.1K]2 years ago

3 0

Answer:60

Step-by-step explanation:

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(a + b)(a – b) = a2 + b2 true or false?

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False it's a2-b2 :))))

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1/4 x -2>1<br><br> and the grater than sign has a line under it.

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For this inequality x is greater than or equal to 12

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3 years ago

129,543 rounded to the nearest ten thousand

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What is the exponential regression equation that fits these data?

zlopas [31]

Answer:

Option B) $y = (1.31)(2.8^{x})$ is the correct option.

Step-by-step explanation:

<em>Exponential function is the one where, a constant is raised to the power of x, a independent variable.</em>

Here, only option B and D are such exponential functions, while option A is linear and option C is quadratic in nature.

Now, to verify which option is correct, we will input the values and check which has the least difference between the given values.

Or we can use the cost function,

$J = \frac{((y(i))-y)^2}{2m}$ , to find which function has the least error.

By applying the above results,we find Option B is correct.

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2 years ago

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In triangle MPN, angle P is a right angle. If cos N= 3/5 which of the following statements is true

Bezzdna [24]

Answer: Sin N = $\frac{4}{5}$

Step-by-step explanation:

Since we have given that

In triangle MPN, ∠P=90°

$\cos N=\frac{3}{5}$

As we know the formula for "Trigonometric Ratios":

$\cos N=\frac{Base}{Hypotenuse}=\frac{3}{5}$

By Pythagorus theorem , we get

$H^2=B^2+P^2\\\\5^2=3^2+P^2\\\\25=9+P^2\\\\25-9=P^2\\\\16=P^2\\\\P=\sqrt{16}\\\\P=4\ units$

So, we get,

$\sin N=\frac{Perpendicular}{Hypotenuse}=\frac{4}{5}$

Hence, Sin N = $\frac{4}{5}$

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2 years ago