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3 years ago

I earn $20.00 in 4 hours. At this rate, how much will i earn in 28 hours (show your work)

Mathematics

1 answer:

Sedbober [7]3 years ago

7 0

Answer:

140$

Step-by-step explanation:

4 hours = 20

28 hours divided by 4 is 7

7 x 20 = 140

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The costs of 2 sound systems were decreased by $10. The original costs of the systems were $90 and $60. Without calculating, whi

bezimeni [28]

The 60$ system had a greater percentage decrease because it was a lower number to begin with. Taking the same portion out of two different numbers will always be a greater decrease for the lower number.

4 0

2 years ago

Anna wants to buy a car in two years and wants to have $10,000 for the purchase. How much will Anna need to deposit today in an

Brut [27]

Answer:

Anna will need to deposit $\$9,050.25$

Step-by-step explanation:

we know that

The compound interest formula is equal to

$A=P(1+\frac{r}{n})^{nt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

$t=2\ years\\A=\$10,000\\ r=0.05\\n=12$

substitute in the formula above and solve for P

$10,000=P(1+\frac{0.05}{12})^{12*2}$

$10,000=P(1.0042)^{24}$

$P=10,000/(1.0042)^{24}$

$P=\$9,050.25$

8 0

2 years ago

Given the sequence 2, 5, 8, 11, 14, ..., which term is 59? (Hint: find n.)

____ [38]

N = 3 ( the next number is 3 plus the previous number
sequence formula = an = 3(n-1) +2

so for term the term that =59

59 = 3(n-1) +2

distribute:
59 = 3n -3+2

59 = 3n -1

60 = 3n
n = 60/3
n = 20

59 is the 20th term

8 0

3 years ago

What is the value of d to the nearest tenth?

Ghella [55]

Answer: $d=13.8$