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jeka57 [31]
1 year ago
6

Mara found the length of time of an investment. The principal of the investment was $4,300, the interest rate was 6.2 percent, a

nd the interest was $2,666. Mara made an error in her work. I = p r t. 2666 = (4300) (0.062) t. 2666 = (266.6) t. StartFraction 266.6 over 2666 EndFraction = t. 0.1 = t. What was Mara’s error?
Mathematics
2 answers:
Kruka [31]1 year ago
8 0

Answer: Maria did not divide correctly

Step-by-step explanation:

Hatshy [7]1 year ago
8 0

Answer:

Maria did not divide correctly

Step-by-step explanation:

You might be interested in
A part-time landscaper made $8996.32 last year. if she claimed herself as an exemption for $3650 and had a $5700 standard deduct
Andrej [43]

Answer:

$0

Step-by-step explanation:

A part-time landscaper made $8996.32 last year.

She claimed herself as an exemption for $3650 and had a $5700 standard deduction

Exemption means not subject to taxation.

Deduction means taking some amount of your income for the year, and not have to pay taxes on it.

So, 8996.32-(3650+5700)

=-353.68

Since Her income is lower than the exemption and the standard deduction.

So, her taxable income last year was $0.

Thus Option D is correct.

7 0
2 years ago
Read 2 more answers
The volume of the sphere is StartFraction 500 Over 3 EndFractionπ cubic units. A sphere has a radius of x units. What is the val
Tpy6a [65]

Answer:

(b) Radius of the sphere = 5 units.

Step-by-step explanation:

Here, given:

The volume of the sphere  = (\frac{500}{3})\pi cubic units  ... (1)

Also, radius of the sphere  = x  units

Now, VOLUME OF SPHERE  = (\frac{4}{3}) \pi r^3

So, volume of a sphere with radius x  = (\frac{4}{3}) \pi (x)^3

But volume of sphere is given by (1).

\implies (\frac{500}{3})\pi = (\frac{4}{3}) \pi (x)^3\\\implies (\frac{500}{3}) = (\frac{4}{3}) (x)^3\\\implies x^3 = (\frac{500}{3})  \times (\frac{3}{4})  = 125\\\implies x^ 3 = 125 = (5)^3\\\implies x  = 5

Hence, radius of the sphere = 5 units.

4 0
2 years ago
Read 2 more answers
Solve. A power outage affected all homes and businesses within a 3 mile radius of the power station. If the power station is loc
Aneli [31]

Answer:

\left ( x+5 \right )^{2}+\left ( y-6 \right )^{2}= 9

Step-by-step explanation:

The power station is located 5 miles west and 6 miles north of the center of town. So if we try to locate the above points on a Cartesian plane. The co-ordinates of these points will be (-5,6).

And it is also mentioned that a power outage affected all homes and businesses within a 3 mile radius of the power station. So if we plot all the furthest points from the station affected by the power outage it will be a circle of radius 3 miles and center at  (-5,6).

The equation of a circle with center (a,b) and radius r is given by :

\left ( x-a \right )^{2}+\left ( y-b \right )^{2}= r^{2}

Hence the equation of the resulting circle will be: \left ( x+5 \right )^{2}+\left ( y-6 \right )^{2}= 3^{2}

4 0
1 year ago
A King in ancient times agreed to reward the inventor of chess with one grain of wheat on the first of the 64 squares of a chess
statuscvo [17]
Let's start by visualising this concept.

Number of grains on square:
1   2   4   8   16 ...

We can see that it starts to form a geometric sequence, with the common ratio being 2.

For the first question, we simply want the fifteenth term, so we just use the nth term geometric form:
T_n = ar^{n - 1}
T_{15} = 2^{14} = 16384

Thus, there are 16, 384 grains on the fifteenth square.

The second question begs the same process, only this time, it's a summation. Using our sum to n terms of geometric sequence, we get:
S_n = \frac{a(r^{n} - 1)}{r - 1}
S_{15} = \frac{2^{15} - 1}{2 - 1}
S_{15} = 2^{15} - 1 = 32767

Thus, there are 32, 767 total grains on the first 15 squares, and you should be able to work the rest from here.
6 0
1 year ago
Read 2 more answers
The number of pages that Zak, Karen, Malia, and Ali can read in a day is shown below:
weeeeeb [17]

Answer:

Malia. (pretty sure)

Step-by-step explanation:

Zak- 8.4

Karen- 7.68

Malia- 9.52

Ali- 7.2

8 0
1 year ago
Read 2 more answers
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