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3 years ago

Determine if the following is true: if sin^2x cos^2x=1, then sinx+cosx=1

Mathematics

1 answer:

SCORPION-xisa [38]3 years ago

6 0

Answer:

true

Step-by-step explanation:

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Write 4 3/7 as a decimal.

kap26 [50]

Step-by-step explanation:

4.04285.

Hope it helps

have a great day

5 0

3 years ago

Read 2 more answers

X^2 + 4.7^2 = 13.4^2

tamaranim1 [39]

Answer:

$x = - \: 12.55 \: or \: x = 12.55$

Step-by-step explanation:

We want to solve for x in

${x}^{2} + 4.7^{2} = 13.4^{2}$

We group constants on the right to get:

${x}^{2} = 13.4^{2} - {4.7}^{2}$

We apply difference of two squares

${x}^{2} = (13.4 - {4.7})(13.4 + 4.7)$

${x}^{2} = 157.47$

$x = \pm \sqrt{157.47}$

$x = \pm \: 12.55$

5 0

3 years ago

A sphere has a diameter of 14 ft. What is its surface area? The surface area of the sphere is ft squared. (Type an exact answe

-BARSIC- [3]

Answer:

The Formula is 4 x Pi x Radius Squared . surface area of sphere = 4 x pi x radius x radius where "x" indicates multiplication and pi = approximately 3.141592654 4 * pi * r^2

Step-by-step explanation:

4 0

3 years ago

Did you hear about the mathematician who wanted to make a fruit salad so he bought some apples and oranges

e-lub [12.9K]

No... I don't get it.. lol

3 0

3 years ago

The 10 participants in an experiment had the following reaction times ( in milliseconds ) : 778,783,784,786,790,804,807,810,819,

Nata [24]

Answer:

Mean. It includes all data points.

Step-by-step explanation:

-We first need to calculate the mean, median and mode then compare our values:

#Mean:

$\bar x=\frac{1}{n}\sum{x_i}\\\\=\frac{1}{10}\sum{778+783+784+786+790+804+807+810+819+823}\\\\=\frac{1}{10}\times \\\\=798.40$

#The median is the middlemost data point in a lsit data:

778,783,784,786,790,804,807,810,819,823

-Since our data points is an even number, the median number is calculated as:

$median=\frac{1}2}\sum{5^{th}+6^{th}}\\\\=0.5[790+804]\\\\=797.00$

#Mode is the data point with the highest frequency:

-Since there's no number appearing more than once, our set has no mode.

#Since our data set has no outliers and is not a skewed distribution, the mean will be the best measure as it includes all data points

8 0

3 years ago