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Rasek [7]
3 years ago
11

Help!!!!!!!!!!!!!!!!!! (#8)

Mathematics
1 answer:
anastassius [24]3 years ago
4 0
Area of a semicircle  = \frac{ \pi r^2}{2}
r = 7 cm
pi = 3.14

Area = 3.14 * 7^2 / 2
Area = 3.14 * 49 / 2
Area = 153.86 / 2
Area = 76.93 cm^2  <<<<<  Answer
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Suppose you deposit $1,500 in a savings account that pays interest at an annual rate of 5%. If no money is added or withdrawn fr
forsale [732]

Answer:

The solution is given below.

Step-by-step explanation:

Given that

Deposited amount = $1,500

Rate of interest = 5%

We need to find out the following things

a. The account after 4 years i.e. future value

As we know that

Future value = Present value × (1 + rate)^time period

Future value = $1,500 × (1 + 0.05)^4

Future value = $1,500 × (1.05)^4

Future value = $1,823.26

b. The account after 16 years i.e. future value

As we know that

Future value = Present value × (1 + rate)^time period

Future value = $1,500 × (1 + 0.05)^16

Future value = $1,500 × (1.05)^16

Future value = $3,274.312

c. The number of years that contain the amount of $2,000

Here

PV = $1,500

FV = $2,000

PMT = $0

RATE = 5%

The following formula should be applied

= NPER(RATE;PMT;-PV;FV;TYPE)

After applying the above formula, the time period is 4.94 years

d. The number of years that contain the amount of $2,500

Here

PV = $1,500

FV = $2,000

PMT = $0

RATE = 5%

The following formula should be applied

= NPER(RATE;PMT;-PV;FV;TYPE)

After applying the above formula, the time period is 8.77 years

7 0
3 years ago
Alison knits 1/10 of scarf in 4/5 of an hour. what fraction of a scarf can alison knit in 1 hour? and how do u solve it?
pav-90 [236]
For this case we can make the following rule of three:
 1/10 scarf ------> 4/5 hour
 x ------------------> 1 hour
 Clearing the value of x we have:
 x = (1 / (4/5)) * (1/10)
 Rewriting we have:
 x = (5/4) * (1/10)
 x = 5/40
 x = 1/8
 Answer:
 
A fraction of a scarf that alison can knit in 1 hour is:
 
x = 1/8
8 0
3 years ago
Read 2 more answers
What is (are) the x- interscepts of the function graphed above
Vilka [71]

Answer:

D. -4, -1, and 5

Step-by-step explanation:

X-intercepts are the values where your graph (function) crosses the x-axis.

So, on this graph-the pink line crosses the x-axis at these values: -4, -1, and 5.

7 0
3 years ago
801 round to the nerest ten
jolli1 [7]
801 rounded to the nearest ten would be 811


8 0
3 years ago
Read 2 more answers
in a survey of 850 students in a school 90% reported having pets at home. if the margin of error is +3.4%, what is the interval
castortr0y [4]

Answer:

86.6% ; 93.4%

Step-by-step explanation:

To obtain the population proportion from the sample, we calculate the confidence interval ;

Confidence interval = phat ± margin of error

Phat = 90% ; margin of error = +3.4%

Hence,

90% ± 3.4%

(90 - 3.4)% ; (90 + 3.4)%

86.6% ; 93.4%

3 0
3 years ago
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