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3 years ago

8

A factory building built for $400,000 depreciates continuously at 10% per annum. What is its value after 7 years?

1 answer:

dangina [55]3 years ago

4 0

400,000\%10 = 40,000•7=280,000

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Describe the relationship between the value of the digits in the number 9,999,999

algol [13]

9 999 999 in words is read as nine million, nine hundred and ninety-nine thousand, and nine hundred and ninety-nine

By partitioning, we can write 9 999 999 as follow
9 000 000 + 900 000 + 90 000 + 9000 + 900 + 90 + 9

If we start at the first digit of '9' on the left, the next digit is ten times smaller than the previous one.

4 0

3 years ago

Rebecca earned $115 in simple interest for 8 months at an annual interest rate of 3%. How much money did she start with in her a

nata0808 [166]

Answer:

$5750

Step-by-step explanation:

For simple interest,

I = prt

115 = p × 0.03 × 8/12

p = 5750

8 0

2 years ago

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Arionna needed to graph triangle PQR reflected across the y-axis which statement identify her errors

qwelly [4]

There isn't enough information.

6 0

3 years ago

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Solving 8 problems per minute, Fast Finn can finish his test in time. He was however, working faster, solving 10 problems per mi

mrs_skeptik [129]

Answer:

Number of problems = 240

Step-by-step explanation:

Let x be the number of questions and t be the time.

Given:

Average rate = 8 problems per minute

Fast Finn rate = 10 problems per minute

Fast Finn taken time = t - 6

We need to find the number of problems on the test paper.

Solution:

Average rate to solve test paper.

$Average\ rate =\frac{Number\ of\ questions}{time}$

$8 =\frac{x}{t}$

$t =\frac{x}{8}$ --------------(1)

Fast Finn rate to solve the test paper.

$Average\ rate =\frac{Number\ of\ questions}{time}$

$10 =\frac{x}{t-6}$

Using cross multiplication rule.

$x=10(t-6)$

$x=10t-60$

substitute $t =\frac{x}{8}$ from equation 1.

$x=10(\frac{x}{8}) -60$

Rearrange the equation as:

$x - \frac{5}{4}x = -60$

$\frac{4x-5x}{4}=-60$

$-\frac{x}{4} = -60$

Using cross multiplication rule.

$x = 60\times 4$

x = 240 problems.

Therefore, 240 problems were on the test.

4 0

4 years ago

2y=2x+6<br> Solve for y

4vir4ik [10]

Answer:

y=x+3

Step-by-step explanation:

3 0

3 years ago

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