To find how much each slice of bread costs, you need to divide the cost (0.90) by how many slices there are (15). When you divide the two, you get 0.06. To check your answer you can do 0.06x15 and that will equal $0.90.

8 0

3 years ago

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Which statement justifies that 3x2 − 2x − 4 multiplied by 2x2 + x − 3 obeys the closure property of multiplication? The result 6

N76 [4]

Answer:

The result $6x^4-x^3-19x^2+2x+12$ .

is a polynomial.

Step-by-step explanation:

The first polynomial is $3x^2-2x-4$ .

The second polynomial is $2x^2+x-3$

The closure property of multiplication states that if we multiply two polynomials the result must be a polynomial.

The product of these two polynomials is :

$(3x^2-2x-4)(2x^2+x-3)=6x^4-x^3-19x^2+2x+12$ .

We can see that the result is still a polynomial.

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3 years ago

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ATOR

katrin2010 [14]

Answer:

6 adults

Step-by-step explanation:

Let

x -----> the number of children

y ----> the number of adults

we know that

The ratio

$\frac{x}{y}=\frac{20}{15}$

using proportion

Find the value of y for x=(20-12)=8

$\frac{20}{15}=\frac{8}{y}\\\\y=15*8/20\\\\y=6$

therefore

6 adults

4 0

3 years ago