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3 years ago

Ejercicio 34 - College Board

Mathematics

1 answer:

NISA [10]3 years ago

7 0

360 es un globo, ⭕️, 180 es un

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PLEASEEEEE I NEED IT NOWW!!! ILL MARK BRAINLIEST!!!!

FrozenT [24]

Answer:

First number line

Step-by-step explanation:

-6 means 6 to the left, and subtracting -8 to it means 8 to the right.

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2 years ago

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Match the right side of the equation to the left side cot x sec^4 x=cot x+ 2 tan x+tan^3 x

Natalka [10]

Step-by-step explanation:

cot x + 2 tan x + tan³ x

Write in terms of sine and cosine:

(cos x / sin x) + 2 (sin x / cos x) + (sin³ x / cos³ x)

Find the common denominator:

(cos⁴ x / (sin x cos³ x) + 2 (sin² x cos² x / (sin x cos³ x)) + (sin⁴ x / (sin x cos³ x))

Add:

(cos⁴ x + 2 sin² x cos² x + sin⁴ x) / (sin x cos³ x)

Factor:

(sin² x + cos² x)² / (sin x cos³ x)

Pythagorean identity:

1 / (sin x cos³ x)

Multiply top and bottom by cos x:

cos x / (sin x cos⁴ x)

Simplify:

cot x sec⁴ x

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3 years ago

Use the standard norml distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justif

dalvyx [7]

Answer:

E) we will use t- distribution because is un-known,n<30

the confidence interval is (0.0338,0.0392)

Step-by-step explanation:

Step:-1

Given sample size is n = 23<30 mortgage institutions

The mean interest rate 'x' = 0.0365

The standard deviation 'S' = 0.0046

the degree of freedom = n-1 = 23-1=22

99% of confidence intervals $t_{0.01} =2.82$ (from tabulated value).

$The mean value = 0.0365$

$x±t_{0.01} \frac{S}{\sqrt{n-1} }$

$0.0365±2.82 \frac{0.0046}{\sqrt{23-1} }$

$0.0365±2.82 \frac{0.0046}{\sqrt{22} }$

$0.0365±2.82 \frac{0.0046}{4.690 }$

using calculator

$0.0365±0.00276$

Confidence interval is

$(0.0365-0.00276,0.0365+0.00276)$

$(0.0338,0.0392)$

the mean value is lies between in this confidence interval

(0.0338,0.0392).

Answer:-

using t- distribution because is unknown,n<30,and the interest rates are not normally distributed.

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3 years ago

Teresa's restaurant bill comes to $29.99 before tax. If the sales

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The answer is $37.86 !! hope this helps

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3 years ago

A storage container for oil is in the shape of a cylinder with a diameter of 10 feet and a height of 17 feet which measurement i

strojnjashka [21]

The answer would be 1335.18

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3 years ago