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2 years ago

Select the correct answer.

Mathematics

2 answers:

Nataly_w [17]2 years ago

8 0

Answer:

the standard deviation of the means

Step-by-step explanation:

The standard error of the mean, also called the standard deviation of the mean, is a method used to estimate the standard deviation of a sampling distribution.

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klio [65]2 years ago

7 0

Answer:

The answer is b I'm not to sure but I think its b

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Write the expressions without using log. Can someone please help with this?

goldenfox [79]

$\bf \textit{logarithm of factors}\\\\
log_{{ a}}(xy)\implies log_{{ a}}(x)+log_{{ a}}(y)
\\\\\\
\textit{Logarithm of rationals}\\\\
log_{{ a}}\left( \frac{x}{y}\right)\implies log_{{ a}}(x)-log_{{ a}}(y)
\\\\\\
\textit{Logarithm of exponentials}\\\\
log_{{ a}}\left( x^{{ b}} \right)\implies {{ b}}\cdot log_{{ a}}(x)\\\\
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$\bf log(m^3n)\implies log(m^3)+log(n)\implies 3log(m)+log(n)
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\boxed{3k+v}
\\\\\\
log\left(\cfrac{m}{n^3} \right)\implies log(m)-log(n^3)\implies log(m)-3log(n)
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3 years ago

uincy uses the quadratic formula to solve for the values of x in a quadratic equation. He finds the solution, in simplest radica

Verdich [7]

Answer: according to spark notes: There can be 0, 1, or 2 solutions to a quadratic equation, depending on whether the expression inside the square root sign, (b2 - 4ac), is positive, negative, or zero. This expression has a special name: the discriminant.

In this case it is 0, not 2, which was my first and wrong answer

3 0

3 years ago

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A sum of money was to be divided among A,B, and C in the ratio 2:3:5. The largest share amount to $4500 what is the total amount

Alika [10]

Answer:

2:3:5 = 480:720:1200

(a) 480+720+1200

(b) 480

Step-by-step explanation:

8 0

1 year ago

I NEED HELP PLEASEEE! thank you :)

Artemon [7]

Answer:

70°

Step-by-step explanation:

The tangent- chord angle is one half the measure of the intercepted arc.

intercepted arc = 360° - 220° = 140°, thus

inscribed angle = 0.5 × 140° = 70°

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3 years ago

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PLEASE HELP WILL MARK AS BRAINLIEST

AveGali [126]

Answer:

$\boxed{\bold{\huge{\boxed{Area\ of\ Trapezium = 150\ cm\²}}}}$

Step-by-step explanation:

Using Pythagorean Theorem first to find EC

$\sf CB^2 = EB^2+EC^2\\Where \ CB = 13 \ and \ EB = 5 \\13^2 = 5^2 + EC^2 \\169 - 25 = EC^2 \\EC^2 = 144\\Taking \ sqrt \ on \ both \ sides\\EC = 12 \ cm$

Given that:

AE = EC

AE = 12 cm

Now,

AB = AE + EB

AB = 12 + 5

AB = 17 cm

ABCD is a trapezoid / trapezium

So,

Area of Trapezium = $\sf \frac{AB+DC}{2} (EC)$

Where AB = 17 , DC = 8 and EC = 12

Area of Trapezium = $\sf \frac{17+8}{2} ( 12)$

Area of Trapezium = (25)(6)

Area of Trapezium = 150 cm²

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2 years ago