Ask question

Ask question

All categories

3 years ago

7

Meryl spends a total of $68.82 for 2 pairs of sneakers with the same cost. The sales tax is $5.32. Meryl also uses a coupon for

$3.00 off her purchase. How much does each pair of sneakers cost?

2 answers:

krek1111 [17]3 years ago

7 0

The answer is $71.14.Hope this helps.

yulyashka [42]3 years ago

3 0

I believe the answer is $79.83. I hope this helps you.

You might be interested in

What are the zeros of the quadratic function f(x) = 2x2 + 8x – 3?

jenyasd209 [6]

Answer:

$x=-2-\sqrt{\dfrac{11}{2}}\ \text{and}\ x=-2+\sqrt{\dfrac{11}{2}}$

Step-by-step explanation:

My favorite way to go at this is to look at a graph. It shows the vertex at (-2, -11). Since the leading coefficient is 2, this means the roots are ...

$-2\pm\sqrt{\dfrac{11}{2}}$

where the 2 in the denominator of the radical is the leading coefficient.

__

You can also use other clues:

the axis of symmetry is -b/(2a) = -8/(2(2)) = -2, so answer choices C and D don't work
the single change in sign in the coefficients (+ + -) tells you there is one positive real root, so answer choice B doesn't work.

The first answer choice is the only one with values symmetrical about -2 and one of them positive.

__

You may be expected to use the quadratic formula:

$x=\dfrac{-b\pm\sqrt{b^-4ac}}{2a}=\dfrac{-8\pm\sqrt{8^2-4(2)(-3)}}{2(2)}\\\\=\dfrac{-8}{4}\pm\dfrac{\sqrt{88}}{4}=-2\pm\sqrt{\dfrac{11}{2}}$

7 0

3 years ago

Write a polynomial function with the real<br> zeros -3, 0, and 3.

suter [353]

$f(x)=x(x-3)(x+3)$

7 0

2 years ago

The quotient of a number and -7 is less than 13

Tomtit [17]

Answer:is there a picture along with this? I don't remember how to do these but this sounds like something with a picture included

Step-by-step explanation:

5 0

3 years ago

What is the area of the largest rectangle that can be inscribed in an isosceles triangle with side lengths $8$, $\sqrt{80}$, and

e-lub [12.9K]

First let's solve the general case for an isosceles triangle of base 2 and height k. If the triangle is drawn so the base is on the x-axis and the apex is on the y-axis, the equation for the line containing the right side is
y = -k(x-1)
Then a rectangle with x-dimension w will have an area that is the product of this width and the height y = -k((w/2)-1).
area = w(-k(w/2 -1)) = (-k/2)w² +kw
The derivative of area with respect to w will be zero where the area is a maximum:
d(area)/dw = 0 = -kw +k
w = 1 . . . . . . add kw and divide by k
Using the formula for area, we find
area = 1(-k(1/2-1)) = k/2
This value is 1/2 the total area of the triangle we started with.

If the side lengths of your triangle are 8, √80, and √80, the height will be given by the Pythagorean theorem as
h = √((√80)² - (1/2·8)²) = √(80-16) = 8
Your triangle's area will be
triangle area = (1/2)(8)(8) = 32

The maximum area of the inscribed rectangle will be half this value,
16 square units

4 0

3 years ago

Use a unit circle, a 30 degrees - 60 degrees - 90 degrees triangle, and an inverse function to find the degree measure of the

PolarNik [594]

150 is the answer I don’t think it is right

8 0

3 years ago