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anyanavicka [17]
2 years ago
8

Tyler orders a meal that costs $15.

Mathematics
1 answer:
olganol [36]2 years ago
6 0
The answer is 69 dollars and the titian would be 69 dollas
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-x - 1 = 221 + 2x <br> plzzzzzzzzz help
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Combine like terms: 2x + -2x = 0&#10;-1 + -3x = 221 + 0&#10;-1 + -3x = 221&#10;&#10;Add '1' to each side of the equation.&#10;-1 + 1 + -3x = 221 + 1&#10;&#10;Combine like terms: -1 + 1 = 0&#10;0 + -3x = 221 + 1&#10;-3x = 221 + 1&#10;&#10;Combine like terms: 221 + 1 = 222&#10;-3x = 222&#10;&#10;Divide each side by '-3'.&#10;x = -74&#10;&#10;Simplifying&#10;x = -74
5 0
3 years ago
For what value of c does x^2−2x−c=4 have exactly one real solution?<br> PLEASE HELP!!!!!!!
Paul [167]

Answer:

-5

Step-by-step explanation:

Moving all terms of the quadratic to one side, we have

x^2-2x-(c+4)=0.

A quadratic has one real solution when the discriminant is equal to 0. In a quadratic ax^2+bx+d, the discriminant is \sqrt{b^2-4ad}.

(The discriminant is more commonly known as \sqrt{b^2-4ac}, but I changed the variable since we already have a c in the quadratic given.)

In the quadratic above, we have a=1, b=-2, and d=-(c+4). Plugging this into the formula for the discriminant, we have

\sqrt{(-2)^2-4(1)(-(c+4)).

Using the distributive property to expand and simplifying, the expression becomes

\sqrt{4-4(-c-4)}=\sqrt{4+4c+16}\\~~~~~~~~~~~~~~~~~~~~~~=\sqrt{20+4c}\\~~~~~~~~~~~~~~~~~~~~~~=\sqrt{4}\cdot\sqrt{5+c}\\~~~~~~~~~~~~~~~~~~~~~~=2\sqrt{c+5}.

Setting the discriminant equal to 0 gives

2\sqrt{c+5}=0.

We can then solve the equation as usual: first, divide by 2 on both sides:

\sqrt{c+5}=0.

Squaring both sides gives

c+5=0,

and subtracting 5 from both sides, we have

\boxed{c=-5}.

3 0
2 years ago
Ken Has Two Red Shirts, Two Blue Shirts, A Pair Of White Pants And A Pair Of Blue Pants. The Probability That He Will Wear A Red
insens350 [35]

There is a 2 in 4 chance for a red shirt

there is a 1 in 2 chance for blue pants

There is (I think) a 1 in 6 chance for the chosen pain to be worn.

8 0
3 years ago
Match the terms below to their definition. Circumcenter
Natasha_Volkova [10]

Answer:

passes through all verrtices of a polygon

Step-by-step explanation:

4 0
3 years ago
Determine which cross products are proportionate to each other. Select all situations that apply.
Gemiola [76]
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4 = 64/16 since 16*4=64
3z/x = 9z/3x since 3z*3=9z and x*3=3x
3 0
3 years ago
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