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stellarik
1 month ago
11

Find the balance in the account. $800 principal earning 7%, compounded annually, after 4 years

Mathematics
2 answers:
AnnZ [12.3K]1 month ago
8 0
Apply the formula for compound interest: A = P (1+r)^t

In this case,

A = $800 (1+0.07)^4  = $800 ( 1.31) = $1048.64 (rounded to the closest cent)
zzz [12.3K]1 month ago
6 0
800×(1.07)^(4) =1,048.63
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Consider this system of equations. Which shows the second equation written in slope-intercept form? y = 3 x minus 2. 10 (x + thr
Leona [12618]

Question

Consider this system of equations. Which shows the second equation written in slope-intercept form?

y = 3x - 2.

10(x + \frac{3}{5} ) = 2y

A. y = 5x + \frac{3}{10}

B. y = 5x + 3

C. y = \frac{1}{5} x + \frac{3}{25}

D. y = \frac{1}{2} x + 6

Response:

B. y = 5x + 3

Detailed explanation:

Given

Equation 1: y = 3x - 2.

Equation 2: 10(x + \frac{3}{5} ) = 2y

Required:

Equivalent of equation 2

To achieve an equivalence of equation 2 (in slope-intercept form), we must first simplify it

10(x + \frac{3}{5} ) = 2y

Open the brackets

10*x + 10 *\frac{3}{5} = 2y

10x + \frac{30}{5} = 2y

Simplify the fractions

10x + 6 = 2y

Divide by 2

\frac{10x}{2} + \frac{6}{2} = \frac{2y}{2}

5x + 3 = y

Re-arrange

y = 5x + 3

Next, we compare options A through D with y = 5x + 3

A. is not equal to y = 5x + 3

Next, we check the second option

B.

y = 5x + 3 matches y = 5x + 3

This option represents the second equation in slope-intercept format.

We check for further options

C.

y = \frac{1}{5} x + \frac{3}{25}

Convert the fraction into a decimal

y = 0.2x + 0.12

This does not equal y = 5x + 3

D.

y = \frac{1}{2} x + 6

Convert the fraction to decimal

y = 0.5x + 6

This also does not equal to y = 5x + 3

Therefore, the only option equivalent to the second equation in slope-intercept form is Option B

7 0
1 month ago
Read 2 more answers
What is the answer? The glee club has 120 cupcakes to sell. they have decided to arrange the cupcakes in the shape of a rectangl
PIT_PIT [12445]
<span>Determine the configuration of columns and rows for the rectangular arrangement of 120 cupcakes.
=> There must be an even number of rows and an odd number of columns.
=> 120 = 2 x 2 x 2 x 15
=> 120 = 8 x 15
=> 120 = 120
Consequently, the glee club should organize the cupcakes in 8 rows and 15 columns.
This totals up to 120 cupcakes altogether.

</span>



8 0
2 months ago
Select the sequence of transformations that will carry rectangle A onto rectangle A'. A) reflect over y-axis, rotate 90° clockwi
PIT_PIT [12445]

Answer:

Each of the 4 arrangements will produce a rectangle.

Explanation:

Transforming a rectangle through rotation or translation will not alter its rectangular shape. This principle also applies when reflecting it across any axis. Thus, every sequence among the four provided will result in a rectangle.

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2 months ago
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Find the height of mt.Whitney in the table, Round the height to the nearest thousands feet.
zzz [12365]
<span>15000 feet The height of Mt. Whitney is listed as 14,505 feet. To round this figure to the closest thousand, we examine the hundreds digit, which is 5. According to the rounding rule, "5 or above, round up, 4 or below, round down". Given that the digit is 5, we round up to yield 15000 feet</span>
8 0
1 month ago
Sanjit drives the 45 km distance between York and Leeds he then drives a further 42 km from Leeds to Blackpool
Leona [12618]

The average speed for his entire journey from York to Blackpool is about 61.41 km/h.

Here’s a breakdown of how we arrive at this:

\text{ The average speed}=\frac{\text{Total distance covered}}{\text{Total time taken}}

The distance he travelled from York to Leeds is 45 km,

and the speed during that section was 54 km/h.

Therefore, the time taken to travel from York to Leeds is 45/54 hours (since Time = Distance/Speed).

Next, the distance from Leeds to Blackpool is 42 km,

and the time for that leg of the journey is 35 minutes, which is 35/60 hours.

This leads to the total duration for his trip as

=\frac{45}{54}+\frac{35}{60}=\frac{450+315}{540}=\frac{765}{540}=\frac{17}{12} hours.

The cumulative distance covered equals 45 + 42 = 87 km.

Thus, his average speed is calculated as:

=\frac{87}{17/12}= \frac{12\times 87}{17}=\frac{1044}{17}=61.4117647\approx 61.41\text{ km per hour}

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2 months ago
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