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lions [1.4K]
3 years ago
13

Nora has a coupon for $3 off of a calzone. She orders a beef and olive calzone, and her bill, with the discounted price is $9.49

. What is the regular price of the calzone?
Mathematics
2 answers:
larisa86 [58]3 years ago
6 0
Well if her coupon is $3 off you add that to the remaining total. If we aren’t including tax and and we assume that both types of calzone are the same price then 12.49/2 is about $6.25
Pavel [41]3 years ago
6 0

Answer:

$12.49

Step-by-step explanation:

You mention "a calzone," which indicates that there's just one.

If, after $3 is taken off the the bill, the price is $9.49, we merely add $3 to that to obtain the regular price of "the calzone."  That comes to $12.49.

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The solution is (-1,5) and (7,-3)

Step-by-step explanation:

The expression is x^{2} +y^{2} -x+3y-42=0 and x+y=4

Using substitution method we can solve the expression.

Let us substitute x=4-y in x^{2} +y^{2} -x+3y-42=0

(4-y)^{2} +y^{2} -(4-y)+3y-42=0

Expanding and simplifying the expression, we get,

\begin{array}{r}{16-8 y+y^{2}+y^{2}-4+y+3 y-42=0} \\{2 y^{2}-4 y-30=0}\end{array}

Let us use the quadratic equation formula to solve this equation,

\begin{aligned}y &=\frac{4 \pm \sqrt{16-4(2)(-30)}}{2(2)} \\&=\frac{4 \pm \sqrt{16+240}}{4} \\&=\frac{4 \pm 16}{4} \\y &=1 \pm 4\end{aligned}

Thus, y=5 and y=-3

Substituting y-values in the equation x+y=4, we get the value of x.

For y=5 ⇒ x=4-5=-1

For y=-3 ⇒ x=4+3=7

Thus, the solution set is (-1,5) and (7,-3)

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3 years ago
List the angles of triangle ABC in order from smallest to largest measure if AB=9, AC=11, and BC=10
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BC is the middle length so angle A is the middle angle. AC is the longest side so angle B is the largest angle.
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