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Lilit [14]
3 years ago
8

What is 66% of $1,678.89 plus 7.5% tax?

Mathematics
1 answer:
schepotkina [342]3 years ago
4 0
50% of 1,678.89 = 839.445
10% = 167.889
5% = 83.9445
1% = 16.7889
.5% = 8.39445
Therefore 66% = 1108.0674
and 7.5% = 125.91675
So the two added together is: 1233.98415
To get the percentages simply do the following
50% = divide by two
10% = divide 50% by five OR divide the original number by 10
5% = divide 10% by two or divide 50% by 10
1% = divide 5% by 5 or divide original by 100
.5% = divide 1% by two
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Use distributive property to factor method 1. Use distributive property to expand method 2.
sasho [114]

Step-by-step explanation:

I guess method 1 means to deal with whole factors.

x + 5 = (x - 2)(x + 5)

for (x + 5) <> 0 we can divide both sides by this factor :

1 = x - 2

x = 3

for the second solution we deal with

x + 5 = 0

x = -5

so, for x = -5 and x = 3 both functions deliver the same output, and these are the intersection points.

method 2 : we multiply the expression out and solve it then

x + 5 = (x - 2)(x + 5)

x + 5 = x² + 5x - 2x - 10 = x² + 3x - 10

0 = x² + 2x - 15

the general solution to such a square equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 1

b = 2

c = -15

x = (-2 ± sqrt(2² - 4×1×-15))/(2×1) =

= (-2 ± sqrt(4 + 60))/2 = (-2 ± sqrt(64))/2 = (-2 ± 8)/2 =

= -1 ± 4

x1 = -1 + 4 = 3

x2 = -1 - 4 = -5

and you get the 2 solutions again. as expected, they are the same as with method 1, of course.

4 0
2 years ago
Domain and Range only for 4 5 and 6
yKpoI14uk [10]

Answer:

4. Domain is all reals and range is 2, -∞

5. Domain and Range is both all reals

6. Domain is 0<x<4 and Range is -3<y<3

Step-by-step explanation:


6 0
3 years ago
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“There are fewer than 60 candies in the jar” {Let c = the number of candies}
ruslelena [56]

Answer:

c < 60

Step-by-step explanation:

8 0
3 years ago
What is the average rate of change of f over the interval -4≤x≤5
Ira Lisetskai [31]

The average rate of change over the interval is 2/9

<h3>How to determine the average rate of change?</h3>

The interval is given as:

-4 ≤ x ≤ 5

From the table, we have:

f(5) = 4

f(-4) = 2

The average rate of change is then calculated as:

m = \frac{f(5) - f(-4)}{5 --4}

This gives

m = \frac{4 - 2}{5 +4}

Evaluate

m = \frac{2}{9}

Hence, the average rate of change over the interval is 2/9

Read more about average rate of change at:

brainly.com/question/23715190

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3 0
2 years ago
You have a bag with the following color chips in it: Red, White, Yellow, and Blue. You are told that 24% of the chips are Red, 4
Juli2301 [7.4K]

Answer:

The answer is 16%

Step-by-step explanation:

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