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Sunny_sXe [5.5K]
3 years ago
14

A student says that 2 1/4 + 1 2/4 =5. Why is that answer wrong?

Mathematics
1 answer:
saw5 [17]3 years ago
8 0
2 1/4 + 1 2/4 ≠ 5

Why?

2 1/4 + 1 2/4 
=3 3/4

The answer is wrong because the student added wrong. The real answer is 3 3/4.
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Which function represents g(x), a reflection of f(x) = 6across the y-axis?
Otrada [13]

Answer: D.) g(x) = 6(3)^{-x}


Step-by-step explanation: We are given an exponential function f(x).

g(x) is an exponential function that is being reflected across y-axis.

According to rules of transformations y=f(-x).

That is variable x is being multiplied by a negative sign.

In the given options g(x) = 6(3)^{-x}, the variable x is being multiplied by a negative sign.

Therefore, correct option is D option.


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2 years ago
Sarah is investing $10,000 in a CD at a bank. If the bank uses simple interest, and the bank pays 2.75% in interest annually, ho
Leokris [45]

Answer: it would be worth $11925 when it matures after 7 years.

Step-by-step explanation:

The formula for determining simple interest is expressed as

I = PRT/100

Where

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P represents the principal or amount invested in the CD.

R represents interest rate on the amount invested in the CD.

T represents the duration of the investment in years.

From the information given,

P = $10,000

R = 2.75%

T = 7 years

I = (10000 × 2.75 × 7)/100

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Therefore, the worth of the CD in total at the end of 7 years when the CD matures is

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3 years ago
Given the rule: an=7(1/2)n-1 identify the first term
Shkiper50 [21]

Answer:

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Step-by-step explanation:

Evaluating the linear rule given, for n = 1, we have ...

  a1 = 7(1/2)(1) -1 = 7/2 -1 = 5/2 = 2.5

_____

We suspect you may intend the exponential function ...

  an = 7(1/2)^(n-1)

Then, for n = 1, we have ...

  a1 = 7(1/2)^(1 -1) = 7(1) = 7 . . . . the first term is 7

_____

When writing an exponential expression in plain text, it requires the exponential operator, a caret (^). If the exponent contains any arithmetic, as this one does, it must be enclosed in parentheses.

3 0
3 years ago
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