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4 years ago

Sophia purchases a cell phone for $25. This amount includes a tax of 6%. What was the cost of the item before tax?

Mathematics

2 answers:

Nataly_w [17]4 years ago

8 0

The final cost is 6 dollars

Katarina [22]4 years ago

5 0

Item before tax is $23.50

Hope this helped :)

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Find the missing term (x^12)^5 x (x^-2)^9 x what =(x^40)^5

Annette [7]

Answer:

$x^{158}$

Step-by-step explanation:

We are given,

$(x^{12} )^{5} \times (x^{-2} )^{9} \times y = (x^{40} )^{5}$ .

It is required to find the value of y.

Now, on simplifying above equation, we get,

$x^{60} \times x^{-18} \times y = x^{200}$

i.e. $x^{42} \times y = x^{200}$

i.e. $y = x^{200} \times x^{-42}$

i.e. $y = x^{158}$

Hence, the missing term is $x^{158}$ .

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3 years ago

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Which set of ordered pairs could be generated by an exponential function ?

lawyer [7]

Answer:

The third choice is the correct answer

Step-by-step explanation:

The set of ordered pairs which could be generated by an exponential function is

$(1,\frac{1}{2}),(2,\frac{1}{4}),(3,\frac{1}{8}),(4,\frac{1}{16})$

If we examine the y-values of this set of ordered pairs, we can see that they have a common ratio of

$r=\frac{1}{4}\div \frac{1}{2}$

$r=\frac{1}{4}\times 2$

$r=\frac{1}{2}$

This makes it exponential.

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3 years ago

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The area of a square ice rink is 400 yd.². What is the perimeter of the rink in yards

MakcuM [25]

Answer:

80 yd^2

Step-by-step explanation:

Since the formula for squares is s^2, we can use this to set up an equation, which is

s^2=400

If we square root this, we get

s=20

The perimeter formula for a square is 4s, so if we plug in, we end up with 80 yd^2

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4 years ago

Is the square of 4 a rational number?

Natalka [10]

Answer:

Yes, 4 squared is a rational number.

Step-by-step explanation:

4 squared = 4 x 4 = 16

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3 years ago

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If T(n)=6n-1what is the first term

OleMash [197]

So if you find the 1st term, you should write 1 instead of n
T1 = 6.1 -1
T1= 6-1
T1= 5
Hope it helps!
#MissionExam001

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3 years ago