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Lady_Fox [76]
3 years ago
9

Jonathan has more than $20 in his piggy banks which of the amounts below could Jonathan have in his piggy bank $7.00 $31.00 $20.

00 $21.00 $12.00 $100.00
Mathematics
1 answer:
Anika [276]3 years ago
3 0

Answer:

$21, $31 and $100

Step-by-step explanation:

He could have all of the amounts that are greater than $20 (not that he CAN'T have $20 as the statement says he has MORE than $20).

7 < 20, so he cannot have $7

31 > 20, so he can have $31

20 = 20, so he cannot have $20

21 > 20, so he can have $21

12 < 20, so he cannot have $12

100 > 20, so he can have $100

So, he can have the following amounts: $21, $31 and $100

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What’s The Value of x
hram777 [196]

Answer:

x = 33

Step-by-step explanation:

4x-25+3x+25+2x-3+4x+3x+15 = 540

16x + 12 = 540

16x = 540 - 12

x = 528/16

x = 33

5 0
2 years ago
Simplify.<br><br> 100‾‾‾‾√<br><br> 20<br><br> 10 <br><br> −1<br><br> −25
olga_2 [115]

Answer:

10

Step-by-step explanation:

\sqrt{100} =\sqrt{(10)(10)}  = 10

 

8 0
2 years ago
76. Currently, your savings for each month is capped at $400. If you start investing all of this into a savings plan earning 1%
Alexxandr [17]

Answer:

10 years and 10 months.

Step-by-step explanation:

The annually interest rate (ia) can be converted by monthly (im) by the equation:

(1 + im)¹² = 1 + ia

(1 + im)¹² = 1 +0.01

(1 + im)¹² = 1.001 (putting ln in both sides)

ln(1 + im)¹² = ln1.001

12*ln(1 + im) = 1.0x10⁻³

ln(1 + im) = 8.33x10⁻⁵(applying "e in both sides)

e^{ln(1 + im)} = e^{8.33x10^{-5}}

1 + im = 1.00083

im = 0.00083 = 0.083%

For a investimenting, the final amount (A) can be calculated by:

A = R*(\frac{(1+i)^n-1}{i} )

Where R is the amount invested per month, i is the interest, and n the number of months:

160000 = 400 *\frac{(1 +0.00083)^n - 1}{0.00083}

\frac{(1 +0.00083)^n - 1}{0.00083} = 400

1.00083ⁿ - 1 = 0.332

1.00083ⁿ = 1.332 (applying ln in both sides)

n*ln1.00083 = ln1.332

8.3x10⁻⁴n = 0.2867

n = 345.4 months

345.4 months *1 yea12 months = 10 years and 10 months.

7 0
3 years ago
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Answer:

-25(t +7)

Step-by-step explanation:

-25t - 175

Factor out -25

-25 *t  +-25* 7

-25(t +7)

3 0
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Say that the economy is in a recession, which is causing the value of gold to fall by three percent. If you have gold reserves w
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Given:
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7 0
3 years ago
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