MATHEMATICS HIGH SCHOOL

At the corner store, Nico bought 5 pencils for $0.10 each and 3 pens for $0.50 each. He used t to represent the sales tax, in dollars, that he also paid. He paid a total of $2.12, including tax. Nico wrote this equation to represent what he paid. What errors, if any, did he make? 5(0.10) + 3(0.50) - t = 2.12

Answers

Answer 1
Answer: he subtracted the tax insted of adding it .
Answer 2
Answer:

Answer:

He should have added t instead of substracting t

Step-by-step explanation:

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Answers

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How would I solve 8^(3/2) * 2^(3/2) ?

Answers

the asnwer is 36 i think

the first mixed fraction would turn into 12 and the second would be 3, and 12 x 3 is 36

I just need the answer for number 15 please

Answers

Answer:

c

Step-by-step explanation:

4x^2 + 8x - 11x + 6 - 5x^2 + 2A. -x^2 - 3x + 8
B. -x^2 + 3x + 8
C. x^2 - 3x + 8
D. x^2 + 3x + 8

Answers

I like to change all the subtraction to addition of the negative.
4x^2 + 8x + (-11x) + 6 + (-5x^2) + 2
Now combine the like terms.
-x^2 -3x + 8

Your answer is A: -x^2 - 3x + 8
4x^2 + 8x - 11x + 6 - 5x^2 + 2
(4x^2 - 5x^2) + (8x - 11x) + 6 + 2
-x^2 - 3x + 6 + 2
-x^2 - 3x + 8

The answer is: -x^2 - 3x + 8.

What is a difference of squares that has a factor of x + 8?Complete the expression:

x2 – _____

Answers

Answer:

The missing value of 64 or 8². The complete expression is x²- 64 or x²- 8².

Step-by-step explanation:

It is given that the difference of squares has a factor of x + 8.

The given expression is

x²- _____

Let the missing term in the given expression be a².

Using the algebraic formula, we get

x^2-a^2=(x-a)(x+a)

It is given that one factor of the given expression is (x+8).

x+a=x+8

a=8

It means the value of a is 8 and the missing value of 64 or 8².

Therefore the complete expression is x²- 64 or x²- 8².
x2-64

Explanation:
The factors of x2-64 are x+8 and x-8. When the factors are multiplied together, they give:
(x+8)(x-8)= x2-8x+8x-64.
-8x+8x gives a zero. This leaves x2-64 which is a difference of two squares.

7. In right triangle BCD, BD12, mLC 90, andmLDBC47. Find DC to the nearest tenth47

Answers

this is using sine law
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