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3 years ago

13

Sunil receives a 20% discount on a concert ticket that costs $75. If Sunil pays $3.30 in sales tax on the discounted ticket, wha

t is the sales tax rate?

1 answer:

Mrac [35]3 years ago

6 0

Think of like 75+3=78 with 30 so minus 20 equals the number you have just like this. 78-20=$50.30

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5 + 4^2 + 6 - 2^2 - 1 = 19

Ann [662]

I have that same question and don’t know how to do it

8 0

2 years ago

Please help me figure this out! Thank you so much :( i really need it! ❤️

Hoochie [10]

Answer:

$\textbf{A. }x=2i\text{ or }x=-2i\\\\\textbf{B. }(x+2i)(x-2i)$

Step-by-step explanation:

The quadratic can be solved in a straightforward way:

$x^2+4=0\\\\x^2=-4\qquad\text{subtract 4}\\\\x=\pm\sqrt{-4}\qquad\text{take the square root}\\\\x=\pm2i\qquad\text{simplify}$

This tells you that the solutions are ...

2i or -2i

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For each root of "a", (x -a) is a factor. Thus the factors of the equation are ...

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8 0

2 years ago

Find the missing terms in the following geometric sequence.

qaws [65]

Answer:

Answer: Option d. 36,108 is the correct answer.

Step-by-step explanation:

In this question we have given a sequence of four terms and we know the first and last term.

Now we have to calculate the ratio of the terms so that we can complete the sequence.

We know the formula of the sequence A(n) = $A(1)r^{n-1}$

Now we know A(4)=324

A(1) = 12

n = 4

So we the values in the formula

324 = $12(r^{4-1)}$

324 = $12r^{3}$

$r^{3} =\frac{324}{12}$

$r=\sqrt[3]{27}$

r = 3

So the sequence will be 12,36,108,324

7 0

2 years ago

Find the mean, median, mode and range of the data set after you perform the given operation on each data value.

Vlada [557]

Mean:

Add all the numbers:

13 + 17 + 15 + 18 + 21 + 13 + 20 + = 16.7
16.7 + 3.7 = 20.4

Mean = 20.4

Median:

Order the numbers:

13, 13, 15, 17, 18, 20, 21

The median, or middle number is 17.
17 + 3.7 = 20.7

Median = 20.7

Mode:

The number that repeats the most is 13.
13 + 3.7 = 16.7

Mode = 16.7

Range:

Highest Number = 21

Lowest Number = 13

21 - 13 = 8

Range = 8

The answer choice that matches is choice A.

Hope this helped☺☺

3 0

3 years ago

Read 2 more answers

Which of the following points is located in the third quadrant of the coordinate plane?

8_murik_8 [283]

Answer:

C. (-7, -15)

Step-by-step explanation:

Both the x- and the y-coordinates of a point in the third quadrant are negative. The given point C. (-7, -15) is the only one of the four choices that satisfies this criterion.

5 0

2 years ago