MATHEMATICS HIGH SCHOOL

Emily and Rachel had lunch at the mall. Emily ordered two slices of pizza and three cookies and her bill was $8. Rachel ordered one slice of pizza and four cookies and her bill was $9. What was the price of one slice of pizza? What was the price of one cookie?

Answers

Answer 1

Answer:

Answer:

one slice of pizza: $1

one cookie: $2

Step-by-step explanation:

Emily: two pizzas (1+1)+three cookies (2+2+2)= 8

Rachel: one pizza (1)+four cookies (2+2+2+2)= 9

can i plz get brainilest? :)

Answer 2

Answer:

piza 1 buck

cooky 2 bucks

Step-by-step explanation:

i did not look at the other answer...

lol i copied the other answer

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What is the value of the expression below when x
6 and y = 10?
10x - 5y

Answers

Answer: 10

Step-by-step explanation: Because 10times X when X=6 is 60 then 5 times Y when Y=10 makes it 50 then subtract the two numbers

60-50=10

Final answer:

The value of the expression 10x - 5y when x = 6 and y = 10 is 10.

Explanation:

The expression given is 10x - 5y. We are asked to determine the value of this expression when x = 6 and y = 10. To do this, we replace x and y in the expression with these given values:

10*6 - 5*10 = 60 - 50 = 10

So, when x = 6 and y = 10, the value of the expression 10x - 5y is 10.

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In sunlight, a vertical stick 7 ft tall casts a shadow 3 ft long. At the same time a nearby tree casts a shadow 11 ft long. How tall is the tree? Round to the nearest tenth.

Answers

ratio of object to shadow = 7/3 = x/11 (where x is the height of the tree)

x = (7 * 11)/3 = 25.7 ft

If 25 is 40% of a value, what is that value?

Answers

the value is 62.50 :)
hope this helps.

40/100=0.4
25/0.4=62.5
so 25 is 40% of 62.5

If i is raised to an odd power, then it can not simplify to be

Answers

Answer:

-1

Step-by-step explanation:

If i is raised to an odd power, then it can not simplify to be?

-1

-i

Odyssey

i is the square root of -1. It is an imaginary number because you can't find the answer to the square root of a negative number.
However, the (square root of a number) squared is that number, for example sqrt4 * sqrt4 = 4.
Likewise, sqrt(i) * sqrt(i) = -1. You can see it as sqrt(-1) * sqrt(-1) = -1.

If you multiply by another sqrt(i) however, sqrt(i)^3, then the last sqrt(i) will be left and there will still be an imaginary number. You will have -1 * i, which is -i.
However, if you have sqrt(i)^4, then you have sqrt(-1)*sqrt(-1)*sqrt(-1)*sqrt(-1), which is -1*-1, which equals 1. You see that pairs of sqrt(i)'s balance and take out imaginary numbers.

So, sqrt(i) to odd powers will still have imaginary numbers, while sqrt(i) to even powers won't have imaginary numbers.

Good luck to:CorStie eer, YGood luck to:CwyShe ee Y ar)34GGood luck to: Cerchie eeラー 5-13-Period:00Date :-sCircles Test1. Identify all tangents for circle O. (1 point) ,2, Define a chord of a circle. (1 pointHFAGOCBDE

Answers

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Given a polynomial f(x), if (x + 5) is a factor, what else must be true?f(0) = 5
f(0) = −5
f(5) = 0
f(−5) = 0

Answers

f(0) = - 5 represents the correct value for the polynomial f(x).

What is a polynomial?

Polynomial is an expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable(s). Example -

5x³ + 4x + 5

Given is a polynomial f(x) and (x + 5) as its factor.

If (x + 5) is the factor, then the graph of f(x) cuts [x] axis at x = - 5. So,

f(0) = - 5.

Therefore, f(0) = - 5 represents the correct value for the polynomial f(x).

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Rule: If x-k is a factor of p(x), then p(k) = 0. This is a special case of the remainder theorem.

Using that rule, we can see that x+5 is really x-(-5) so k = -5.

Therefore,

p(k) = 0
p(-5) = 0

so the answer is choice D.

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