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3 years ago

I really need help. I dont understand

Mathematics

1 answer:

Nutka1998 [239]3 years ago

3 0

Answer:

Step-by-step explanation:

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When Yosef was born, his parents put $1000 into a savings account that earns 4%

deff fn [24]

Answer:

$840 interest

Step-by-step explanation:

4% of 1000 is 40

40•21= 840

If you are adding the interest rate and the $1000 together then you get $1840

Hope this helps

7 0

3 years ago

Dan went to the mall on saturday to buy clothes . He paid $8.49 on shorts and $5.82 on a jacket with a $20 dollar bill. How much

natka813 [3]

Answer:

he paied 14 dollars and 31 cents

Step-by-step explanation:

If i read it right you just add 8.49 and 5.82

6 0

3 years ago

A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of t

Advocard [28]

<span> Norman window with a perimeter of 22 feet?</span>

5 0

4 years ago

Tori rolls three numbered 1 though 6. She records it weather each cube lands on an even or odd number

SVEN [57.7K]

Answer:

480 times

Step-by-step explanation:

Given

$n = 50$ ---- total number of rolls

See attachment for complete question

Required

Times OO will appear in a roll of 2000 times

From the attached bar graph,

$n(OO) = 12$

So, the occurrence of OO in 2000 rolls is:

$OO = \frac{n(OO)}{n} * 2000$

$OO = \frac{12}{50} * 2000$

$OO = 0.24 * 2000$

$OO = 480$

3 0

3 years ago

Match each complex number with its equivalent expression i^157 i^315 i^102 i^76

ryzh [129]

Answers:

$i^{157} = i\\\\i^{315} = -i\\\\i^{102} = -1\\\\i^{76} = 1\\\\$

=====================================================

Explanation:

By definition, $i = \sqrt{-1}$

Squaring both sides gets us $i^2 = -1$

Then multiply both sides by i to get $i^3 = -i$

Repeat the last step and you should get $i^4 = -i^2 = -(-1) = 1$

---------------

Notice we have this pattern going on:

$i^0 = 1\\\\i^1 = i\\\\i^2 = -1\\\\i^3 = -i\\\\i^4 = 1\\\\$

Once we reach i^4, we start the process over again.

It repeats every 4 terms.

This means we'll divide the exponent over 4 and look at the remainder. We ignore the quotient completely.

157/4 = 39 remainder 1

That remainder 1 is the exponent of the simplified term

$i^{157} = i^1 = i$

---------------

Similarly,

315/4 = 78 remainder 3

So $i^{315} = i^3 = -i$

---------------

102/4 = 25 remainder 2

$i^{102} = i^2 = -1$

----------------

76/4 = 19 remainder 0

$i^{76} = i^0 = 1$

8 0

2 years ago