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pshichka [43]
3 years ago
13

I need to study for this maths test can u leave questions

Mathematics
1 answer:
ale4655 [162]3 years ago
3 0
A camera has a listed price of $632.98 <span>before tax. If the sales tax rate is </span><span>6.75%, find the total cost of the camera with sales tax included. Round your answer to the nearest cent, as necessary.</span>
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I REALLY NEED HELP!
Snowcat [4.5K]

Answer:

B

Step-by-step explanation:

The compound interest formula is A = P (1+r/n)^nt where:

  • P is the starting amount called the principle
  • r is the rat written as a decimal
  • n is the number of times compounded in a year
  • t is the number of years

Substitute a value into each variable to solve.

  • P = $147 since 10% of 1,470 is being invested which makes P = 0.10(1470) = 147.
  • The rate is 3.5% or r = 0.035.
  • n = 12 because it is compounded monthly meaning 12 times a year.
  • t = 25 since it will earn for 25 years.

A = P (1+r/n)^{nt}\\A = 147(1 + \frac{0.035}{12})^{12*25}\\A = 147 ( 1 + 0.002916)^{300}\\A = 147(1.002916)^{300}\\A = 352.19

Repeat this process for each formula.

5 0
3 years ago
. The product of 4.7 and 6.5 equals 30.55. What is the product of 4.7 and 4.7 and
7nadin3 [17]
The answer is 3.5 & 355 because the decimal shifts to the left or right, you move the decimal in the answer too.
4 0
3 years ago
3(x^2-1) + 4(x^2 - 3) = 13<br><br> solve for x
Mrrafil [7]

Answer:

x=2, x=-2

Step-by-step explanation:

3x²-3+4x²-12=13

7x²=13+12+3

7x²=28

x²=4

x=-2

x=2

4 0
2 years ago
Read 2 more answers
An artist receives 20% royalty on the retail price of his recordings. if he receives $36,000 in royalties, what is the dollar am
Nonamiya [84]
1% = 36000÷20= 1800
 100% = 100× 1800= 180000

 the dollar amount of the retail price of his recordings is $ 180000.
3 0
2 years ago
Read 2 more answers
The equation of line CD is y = −2x − 2. Write an equation of a line parallel to line CD in slope-intercept form that contains po
Mkey [24]
Y = -2x - 2...the slope here is -2. A parallel line will have the same slope.

y = mx + b
slope(m) = -2
(4,5)...x = 4 and y = 5
now we sub and find b, the y int
5 = -2(4) + b
5 = -8 + b
5 + 8 = b
13 = b

so ur parallel equation is : y = 2x + 13
8 0
2 years ago
Read 2 more answers
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