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IRINA_888 [86]
3 years ago
12

Find the missing values in each row. Use the percent equation. A: Principal: $100 Interest rate: 5% Time in years: 3 Interest ea

rned: B: Principa;" $500 Interest rate: 4% Time in years: interest earned: $20 C: Principal: Interest rate:10%% Time in years: 7 Interest earned:$35 D: Principal: $200 Interest rate: Time in years:2 Interest earned: $6
Mathematics
1 answer:
ANEK [815]3 years ago
7 0

Answer:

A.) 15

B.) 1 year

C.) $50

D.) 1.5%

Step-by-step explanation:

The percentage equation goes thus:

Interest earned = principal * rate * time

A)

Principal: $100 Interest rate: 5% Time in years: 3 Interest earned

Interest earned = $100 * 0.05 * 3

Interest earned = $15

B.)

Principa;" $500 Interest rate: 4% Time in years: interest earned: $20

Interest earned = principal * rate * time

20 = 500 * 0.04 * time

20 = 20 * time

Time = 20 / 20 = 1

Time = 1 year

C.)

Principal: Interest rate:10% Time in years: 7 Interest earned:$35

Interest earned = principal * rate * time

$35 = principal * 0.1 * 7

$35 = principal * 0.7

Principal = $35 / 0.7

Principal = $50

D.)

Principal: $200 Interest rate: Time in years:2 Interest earned: $6

Interest earned = principal * rate * time

$6 = $200 * rate * 2

$6 = $400 * rate

Rate = $6/$400

Rate = 0.015 = 1.5%

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Step-by-step explanation:

7/100 = 0.07

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According to a study, an average of six cell phone thefts is reported in San Francisco per day. Assume that the number of report
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Answer:0.29

Step-by-step explanation:

An average of six cell phone thefts is reported in San Francisco per day. This means our mean value, u = 6

For poisson distribution,

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probability that four cell phones will be reported stolen tomorrow=

P(x=4)= (e^-6×6^4)/4!

= (0.00248×1296)/4×3×2×1

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P(x=5)= (e^-6×6^5)/5!

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= 19.28448/120

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probability that four or five cell phones will be reported stolen tomorrow

= P(x=4) + P(x=5)

= 0.13392 + 0.1607

= 0.294624

Approximately 0.29

8 0
3 years ago
The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is the final pressure of the gas, assuming co
salantis [7]

Answer:

(b) 0.30 atm

Step-by-step explanation:

Given data

Initial pressure= 1.2atm

Initial volume= 1.0L

Final volume= 4.0L

Final pressure= ???

Let us apply the gas formula to find the Final pressure

P1V1= P2V2

Substitute

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Divide both sides by 4

1.2/4= x

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3 years ago
Find the area of a circle with diameter 18 yd.
larisa [96]

Answer:

  • Area of the circle is 254.34 yd²

Step-by-step explanation:

Given:

  • Diameter of circle = 18 yd
  • π = 3.14

To Find:

  • Area of circle.

Solution:

  • Diameter = 18 yd
  • Radius = 18/2 = 9 yd

We know that,

\: \: \:  \:  \dashrightarrow \:  \:  \:  \:  \: {\underline{\boxed{\sf{Area \:  of  \: circle = \pi r^2}}}} \\ \\

Substituting the required values,

\\

\: \: \:  \:  \dashrightarrow \:  \:  \:  \:  \: \sf Area_{(circle)} = 3.14 \times  {(9)}^{2}  \\ \\

\:  \:  \:  \:  \dashrightarrow \:  \:  \:  \:  \: \sf  Area_{(circle)} = 3.14 \times 81 \\  \\

\: \: \:  \:  \dashrightarrow { \:  \:  \:  \:  \: \sf Area_{(circle)} = 254.34 \:  {yd}^{2}}  \\  \\

<u>Hence,</u>

  • <u>Area of the circle is 254.34 yd²</u>
6 0
2 years ago
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