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aivan3 [116]
3 years ago
12

Is the sum of 4.2 and 2 squared irrational or rational ?

Mathematics
2 answers:
RUDIKE [14]3 years ago
4 0
Rational because it would be 8.2
Effectus [21]3 years ago
3 0
4.2 is a rational number and the square root of 2 is a irrational number. The sum of a rational number is a irrational number is alwayd irrational.
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Finding Present Value In Exercise,complete the table to determine the amount of money P that should be invested at rate r to pro
valkas [14]

Answer:

Step-by-step explanation:

The principal was compounded monthly. This means that it was compounded 12 times in a year. So

n = 12

The rate at which the principal was compounded is 4%. So

r = 4/100 = 0.04

The formula for compound interest is

A = P(1+r/n)^nt

A = total amount in the account at the end of t years. The total amount is given as $100000.

1) When t is 1,

100000 = P(1+0.04/12)^12×1

100000 = P(1+0.0033)^12

100000 = P(1.0033)^12

P = 100000/1.04

P = $96154

2) When t is 10

100000 = P(1+0.04/12)^12×10

100000 = P(1+0.0033)^120

100000 = P(1.0033)^120

P = 100000/1.485

P = $67340

3) When t is 20

100000 = P(1+0.04/12)^12×20

100000 = P(1+0.0033)^240

100000 = P(1.0033)^240

P = 100000/2.2

P = $45455

4) When t is 30

100000 = P(1+0.04/12)^12 × 30

100000 = P(1+0.0033)^360

100000 = P(1.0033)^360

P = 100000/3.274

P = $30544

5) When t is 40

100000 = P(1+0.04/12)^12 × 40

100000 = P(1+0.0033)^480

100000 = P(1.0033)^480

P = 100000/4.862

P = $20568

6)When t is 50

100000 = P(1+0.04/12)^12 × 50

100000 = P(1+0.0033)^600

100000 = P(1.0033)^600

P = 100000/7.22

P = $13850

5 0
3 years ago
Can you answer number 4 and can you answer question 3.
xxMikexx [17]

Answer:

0.03

Step-by-step explanation:

<u>Brand A:  11 fluid ounces and costs $2.31</u>

2.31 / 11

0.21 per fluid ounce

<u>Brand B:  15 fluid ounces and costs $2.70</u>

2.70 / 15

0.18 per fluid ounce

<u>Subtract:  </u>

0.21 - 0.18

0.03

Answer:  0.03

6 0
3 years ago
Please help with this problem <br> thanks so much
Lunna [17]

Answer:

5/17

Step-by-step explanation:

If we do the multiplication first, we get:

\frac{4-(12\div-12)}{13+(-8\div-2)}

If we do the division next, we get:

\frac{4+1}{13+4} = 5/17

4 0
2 years ago
Part G
ycow [4]
Where is the problem?
5 0
2 years ago
Please I need some steps!
gulaghasi [49]

Answer:

98.875

Step-by-step explanation:

Just add all the hours worked.

Hope this helps! :)

6 0
3 years ago
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