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2 years ago

For a promotion, a store offers to pay the sales taxes on any item

1 answer:

7 0

You buy an item for $100 with 15% added tax. So we find 15% of 100:
100 • 0.15 = 15

(A quick math here, and percentage of 100 will always be the same number of the percentage, for example 32% of 100 will be 32.)

100 + 15 = 115

a) the true sale price of the item is $115 (with tax included)

b) you are buying a $15 tax (for the item)

(I hope these are correct, the questions are really vague)

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The area of a triangle is 32

Serhud [2]

We have the formula A = (h x b) / 2, where A is the area of the triangle, h is the height of the triangle, b is the base of the triangle;
So, 32 =(8 x b) / 2;
Then, 64 = 8 x b;
b = 64 ÷ 8;
b = 8 inches;

7 0

3 years ago

How do you solve a function

madreJ [45]

You used to say "y = 2x + 3; solve<span> for y when x = –1". Now you say "f(x) = 2x + 3; find f(–1)" (pronounced as "f-of-x is 2x plus three; find f-of-negative-one"). You do exactly the same thing in either case: you plug in –1 for x, multiply by 2, and then add the 3, simplifying to get a final value of +1.
Brainliest?</span>

7 0

3 years ago

Write an equation of a line parallel to line EF below in slope-intercept form that passes through the point (2, 6).

N76 [4]

Answer:

y = -⅔x + ²²/₃

Step-by-step explanation:

1. Calculate the slope of EF

Assume E is at (-2, 5) and F is at (1, 3).

m₁ = (y₂ - y₁)/(x₂ - x₁) = (3 - 5)/(1 -(-2)) = -⅔

2. Calculate the slope of the parallel line

m₂ = m₁ = -⅔

3. Calculate its y-intercept

y = mx + b

6 =-⅔(2) + b

Simplify

6 = -⁴/₃ + b

Add ⁴/₃ to each side

b = 6 + ⁴/₃ = ¹⁸/₃ + ⁴/₃ = ²²/₃

The y-intercept is at (0,²²/₃).

4. Write the equation for the line

y = -⅔x + ²²/₃

The diagram shows EF in red. The parallel line in black passes through (2, 6) with a y-intercept at (0,²²/₃).

7 0

3 years ago

6, 1, -4, -9,...

kykrilka [37]

Texaschic nailed it when saying that it's arithmetic

The recursive way to write this is to say

$a_1 = 6$
$a_n = a_{n-1} - 5$

which tells us "start at 6 and each time subtract off 5"

The $a_n$ portion is the nth term while $a_{n-1}$ is the term just before the nth term

3 0

3 years ago

Describe the solutions of 2-5>n in words

inna [77]

$2-5\ \textgreater \ n \ \textgreater \ Switch\;sides \ \textgreater \ n\ \textless \ 2-5 \ \textgreater \ Simplify \ \textgreater \ 2-5 \ \textgreater \ -3$

$n\ \textless \ -3$

Hope this helps!

5 0

3 years ago