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3 years ago

12.2 - N =3.3 i need heeeeelpXD

2 answers:

6 0

Remember you can do ANTYHING to an equation as long asyou do it to both sides

12.2-N=3.3
minus 3.3 both sides
12.2-3.3-N=3.3-3.3
8.9-N=0
add N to both sides
8.9+N-N=0+N
8.9+0=N
8.9=N

Sergeu [11.5K]3 years ago

5 0

If you do 12.2-3.3 youll get your answer

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Chicago Pizza charges $10.49 for a medium 14" pepperoni pizza and NY Pizza charges $20.99 for an x-large 18" pepperoni pizza.

UNO [17]

Answer:

A; The cost is $0.07 per $inch^{2}$

Step-by-step explanation:

In this question, we are asked to calculate the cost of the Chicago pizza per square inch rounded to the nearest cent.

Firstly, we will need to calculate the area occupied by the 14 inch medium pepperoni pizza made by Chicago pizza

Since the pizza is circular in shape, we use the formula for the area of a circle to calculate its area in square inch

Mathematically, the area of a circle is equal to π $r^{2}$ . Here, our r is half the size of the pizza as the 14 inch represents the full length of the pizza across the center of the pizza = 7 inch

The area is thus = 22/7 × 7 × 7 = 154 $inch^{2}$

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3 years ago

Which statement best describes the graphs of the lines

adoni [48]

Answer:

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3 0

3 years ago

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8090 [49]

9514 1404 393

Answer:

5x^2 +10x = -5

Step-by-step explanation:

The equation will have one solution when the discriminant is zero.

In standard form, the equation is ...

ax^2 +10x -c = 0

The discriminant of the equation ax^2+bx+c=0 is ...

b^2 -4ac

so the discriminant of your equation is ...

10^2 -4a(-c) = 100 +4ac

We want that to be zero, so we require ...

100 +4ac = 0

25 +ac = 0

ac = -25

Any pair of values of 'a' and 'c' that have a product of -25 will satisfy the requirement. As you state, one possible pair is a = 5 and c = -5. Putting these values into the given equation makes it ...

5x^2 +10x = -5 . . . . . the equation with a=5, c=-5

_____

Additional comment

Your problem statement does not require that 'a' be non-zero. If a=0, then the equation will have one real solution for any value of c.

If you restrict the solutions to integers, then possibilities include ...

(a, c) = (1, -25), (5, -5), (25, -1), (-25, 1), (-5, 5), (-1, 25)

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3 years ago

If f(x) = StartFraction x Over 2 EndFraction + 8, what is f(x) when x = 10?

goldfiish [28.3K]

Answer:

Step-by-step explanation: