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3 years ago

Use the image to answer the question.

Mathematics

1 answer:

Nonamiya [84]3 years ago

7 0

Insert a picture on the question bc there is no image

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If the sales tax rate is 7.5% what is the tax on a $12.4 purchase

Verdich [7]

13.33 is the answer because you multiply them and them add what u got

5 0

3 years ago

The PTA set up booths at the local bike race. The volunteers placed a race marker in the ground every five thousand yards. Every

Marina86 [1]

So I was always taught to list out the multiples.
5,000:5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000

8,000:8,000 16,000 24,000 32,000 40,000

You can see more clearly that the first multiple they share is 40,000 yds
Hope that helps

3 0

3 years ago

Find dy/dx and d2y/dx2, and find the slope and concavity (if possible) at the given value of the parameter. (If an answer does n

ella [17]

Answer:

The slope of the function is ²/₃ and since the second derivative is zero, the concavity doesn't exist.

Step-by-step explanation:

Given;

x = 6t

y = 4t - 3

point t = 4

$\frac{dy}{dx} = (\frac{dy}{dt} )/(\frac{dx}{dt} )=\frac{\frac{dy}{dt} }{\frac{dx}{dt}} \\\\\frac{dy}{dt} = 4; \frac{dx}{dt} = 6\\\\\frac{dy}{dx} =\frac{4}{6} = \frac{2}{3}$

The slope of the function is ²/₃

take the second derivative of the function;

the second derivative will be zero since the first derivative is a constant value.

$\frac{d^2y}{dx^2} = 0$

Since the second derivative is zero, the concavity doesn't exist.

4 0

4 years ago

How many solutions does the equation have?

Ratling [72]

3(4x - 3) - 7x = 5x - 9

First, expand your equation so it will be easier to simplify.
$(3)(4x) + (3)(-3)+-7x = 5x + -9$
Second, multiply (3)(4x) to get 12x.
$12x + (3)(-3)+-7x=5x + -9$
Third, multiply (3)(-3) to get -9.
$12x + -9 + -7x = 5x + -9$
Fourth, combine the like terms. (x and -9 alone).
$(12x + -7x) + (-9) = 5x - 9$
Fifth, subtract (12x + -7x) to get 5x.
$5x + -9 = 5x - 9$
Sixth, change 5x + -9 into a subtraction.
$5x - 9 = 5x - 9$
Seventh, since both sides are equal, that means that the equation has infinite solutions.

Answer: B) infinite solutions

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3 years ago

Read 2 more answers

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3 years ago