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2 years ago

11

1. Liu Deposited $3,500 Into A Savings Account The Simple Interest Rate Is 4%. A. How Much Interest Will The Account Earn In 2 Y

ears?

1 answer:

Natali5045456 [20]2 years ago

3 0

Step-by-step explanation:

3,500×4×2/100= 280/100 = $2.80

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How are √25 and √-25 different in the terms of a solution for both? *

Tanya [424]

Answer:

For $\sqrt{25}$ it will be plus or minus $\sqrt{5}$

For $\sqrt{-25}$ it will be plus or minus $\sqrt{5i}$

Step-by-step explanation:

Well for $\sqrt{-25}$ it will be 5i

Because i = -1

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3 years ago

Prove the trigonometric identity

Annette [7]

Answer:

Proved See below

Step-by-step explanation:

Man this one is a world of its own :D Just a quick question are you a fellow Add Math student in O levels i remember this question from back in the day :D Anyhow Lets get started

For this question we need to know the following identities:

$1+tan^{2}x=sec^2x\\\\1+cot^2x=cosec^2x\\\\sin^2x+cos^2x=1$

Lets solve the bottom most part first:

$1-\frac{1}{1-sec^2x} \\\\$

Take LCM

$1-\frac{1}{1-sec^2x} \\\\\frac{1-sec^2x-1}{1-sec^2x} \\\\\frac{-sec^2x}{1-sec^2x} \\\\\frac{-(1+tan^2x)}{-tan^2x}$

now break the LCM

$\frac{-1}{-tan^2x}+\frac{-tan^2x}{-tan^2x}\\\\\frac{1}{tan^2x}+1\\\\cot^2x+1$

because 1/tan = cot x

and furthermore,

$cot^2x+1\\cosec^2x$

now we solve the above part and replace the bottom most part that we solved with $cosec^2x$

$\frac{1}{1-\frac{1}{cosec^2x} } \\\\\frac{1}{1-sin^2x} \\\\\frac{1}{cos^2x}\\\\sec^2x$

Hence proved! :D

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2 years ago

How do you find the x-intercept in sentences?

yulyashka [42]

Answer:

To find the x-intercept of any equation, set the y-value to 0.

Step-by-step explanation:

Example:

y=1x+4

To find x-intercept:

0=1x+4

1. Subtract 4 from both sides

2. Divide both sides by 1

The x-intercept is -4

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2 years ago

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

lubasha [3.4K]

Answer:

<em>13.1</em>

Step-by-step explanation:

A = bh

~~~~~~~

$b_{1}$ = 16 , $h_{1}$ = 9

A = 16 × 9 = 144

From another side area of parallelogram with hight "h" base "b"

11h = 144

<em>h</em> = 144 ÷ 11 ≈ <em>13.1</em>

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1 year ago

Find the area of the figure.

valkas [14]

Answer:

37.5 Units

Step-by-step explanation:

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2 years ago