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Alexxx [7]
3 years ago
15

Fatima evaluated the expression StartFraction 4 m Superscript negative 3 Baseline n Superscript negative 2 Baseline Over m Super

script negative 1 Baseline n EndFraction, when m = negative 2 and n = 4. Her work is shown below. StartFraction 4 m Superscript negative 3 Baseline n Superscript negative 2 Baseline Over m Superscript negative 1 Baseline n EndFraction = 4 m Superscript negative 2 Baseline n Superscript negative 3 Baseline = 4 (negative 2) Superscript negative 2 Baseline (4) Superscript negative 3 Baseline = StartFraction 1 Over 64 EndFraction times StartFraction 1 Over 64 EndFraction = StartFraction 1 Over 4,096 EndFraction What was Fatima’s error?
Mathematics
2 answers:
makkiz [27]3 years ago
7 0

Answer:

C

Step-by-step explanation:

Marysya12 [62]3 years ago
7 0

Answer:

She applied the exponent Negative 2 to 4 (negative 2) instead of applying the exponent to just Negative 2.

Step-by-step explanation:

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Farmer brown likes to grow his crops in equal amounts if the carrot seeds come in packs of 80 the zunchie come in packs of 40 an
solniwko [45]

Given,

The carrot comes in pack of 80

Zunchie comes in the pack of 40

The paper comes in the pack of 50.

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The fewest number of each kind of seed that farmer brown will buy.

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To find least no of each kind, we must take the LCM of the above numbers such that,

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4 0
3 years ago
A credit card issuer offers an APR of 15.83% and compounds interest daily.
Romashka-Z-Leto [24]

Answer:

C. Its APR, because it's less than its effective interest rate.  

Step-by-step explanation:

The interest rate determines the money you must pay on the outstanding balance on the credit card.

The credit card company would advertise the lowest numbers it could truthfully use.

The APR is 15.83 %.

The formula for the effective interest rate is

i = \left (1 + \dfrac{r}{n} \right )^{n} - 1

where the interest rates are expressed as decimals.

If the APR is 15.83% and the interest is compounded daily,  

\begin{array}{rcl}i & = & \left (1 + \dfrac{0.1583}{365} \right )^{365} -1\\\\ & = & (1 + 0.0004337)^{365} -1\\ & = & (1.0004337)^{365} -1\\ & = & 1.1715 - 1\\& = & 0.1715\\& = & 17.15 \%\\\end{array}\\\text{The effective interest rate is $\mathbf{17.15 \%}$}

The APR is less than the effective interest rate, so that's what the company would advertise.

4 0
3 years ago
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