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2 years ago

(PLEASE HELP) What is the sum of the values of luann’s three cards?

Mathematics

1 answer:

MAXImum [283]2 years ago

7 0

Answer:

the sum of the values should be -14

Step-by-step explanation:

-12+3-5=-14

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Greeley [361]

Answer:

Step-by-step explanation:

see attachment

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3 years ago

Use basic trigonometric identities to simplify the expression: sin (-x) cos (-x) csc (-x) =?

Anestetic [448]

Answer:

$sin (-x) cos (-x) csc (-x) =cos(x)$

Step-by-step explanation:

We know by definition that the cosine is an even function, therefore

$cos (-x) = cos (x)$

We also know that the sin is an odd function, therefore

$sin (-x) = -sin (x)$

By definition:

$cscx = \frac{1}{sinx}.$

Then:

$csc(-x) = \frac{1}{sin(-x)}.$

$csc(-x) = -\frac{1}{sin(x)}.$

Using these trigonometric properties we can simplify the expression

$sin (-x) cos (-x) csc (-x)= -sin(x)cos(x)*(-\frac{1}{sin(x)})\\\\sin (-x) cos (-x) csc (-x)=cos(x)$

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3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B5%5D%7B1150%3F%20%7D%20%20%3D%20" id="TexFormula1" title=" \sqrt[5]{1150? } = "

zimovet [89]

=4.0939
If you only need 1 d.p then it’s 4.1

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2 years ago

You travel 10.7 miles (1 way) for work 5 days a week. On weekends you travel 5.8 miles. The last time you filled your tank you p

Kamila [148]

Answer:

1. 0.0731 miles per gallon

2. $967.46

Step-by-step explanation:

The I way travel for 5 days to work will cover: 10.7 miles.

A two travel to work and back home will be : 10.7* 2 =21.4 miles

On weekends miles covered = 5.8 miles

Last time the tank was filled with = 17.2 gallons of gas

The Trip A meter read = 389.30 ----this is the average fuel mileage

This means the trip consumed : 389.30 - 17.2 = 372.1 gallons of gas

Total miles covered are : 21.4 + 5.8 = 27.2 miles

1. Miles per gallon for the car will be;

372.1 gallons of gas = 27.2 miles

1 gallon of gas = ?

{27.2 *1} / 372.1 = 0.0731 miles per gallon

2. Cost of gas per week will be ;

In the United States :

1 gallon of gasoline = $2.60

372.1 gallons of gas = ? $2.60 * 372.1 = $967.46

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3 years ago

Define a Variable in a equation

Vladimir [108]

A variable is a symbol that’s used in a number. It typically uses a variation of letters such as x,y,etc. for instance 3x=6

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3 years ago