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3 years ago

10

2+2(2×3)

" id="TexFormula1" title="(2 \times 5) - (5 \times 6) + (4 \times 8)" alt="(2 \times 5) - (5 \times 6) + (4 \times 8)" align="absmiddle" class="latex-formula">

1 answer:

Katen [24]3 years ago

5 0

Answer:

14

Step-by-step explanation:

2+2(2*3)

=2+2(6)

=2+12

=14

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This seems to be calculus 1.

<u>Question a</u>

We have $-2x^3 + 5x^2 + 9$

m = slope = derivative

Find the derivative / slope of $-2x^3 + 5x^2 + 9$

We do this by differentiating the polynomials. There are a few methods to do this but I am going to use the power rule, which we multiply the constant by the exponent on the variable and subtract one from the exponent.

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<em>Now that we have this information, we can answer question b</em>

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3 years ago

Ava bought some pens for $ 2 each and some pencils for $ 1 each. She bought 3 more pens than pencils and spent a total of $ 12.

Rudiy27

Answer:

Step-by-step explanation:

price of 1 pen= $ 2

price of 1 pencil= $1

total money spent= $12

Let the number of pen be a and number of pencil be b.

2 a + b = 12 ----------------Equation 1

We have, she bought 3 more pens than pencils

a - b = 3 ------------------ Equation 2

Equation 1 +Equation 2,

2 a + b + a - b = 12 + 3

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Substituting in equation

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b = 2

Number pencils Ava bought = 2

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3 years ago