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katen-ka-za [31]
4 years ago
11

Simplify 2x^2 - y for x = 3 and y = -2.

Mathematics
2 answers:
NemiM [27]4 years ago
7 0
x=3 \\
y=-2 \\ \\
\hbox{plug the values into the expression:} \\
2x^2-y=2 \times 3^2-(-2)=2 \times 9 +2=18+2=\boxed{20}
Luda [366]4 years ago
3 0

Answer:

20 and good job to the other person

Step-by-step explanation:

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NEED HELP FAST. (Fractions) 5/6 + 1/3, in the simplest form. Please explain how you got the answer.
BARSIC [14]
5/6 + 1/3

To add both sides need the same denominator. To give he fractions a common denominator, multiply the second fraction (1/3) by 2.

5/6 + 2/6

Add the numerators

7/6

Change into mixed number

1 and 1/6

I hope this helps, feel free to ask any questions you may have
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3 years ago
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Vitek1552 [10]

Answer:

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Step-by-step explanation:

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Your formula would be 3(p+0.75)=5.88


Because you have 3 pounds and 0.75 for each.

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4 0
3 years ago
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If 30g of sugar is needed to make 4 cakes how much grams of sugar is needed to make 7 cakes
arsen [322]
There's two ways to do this.

The first way:
Work out the amount of sugar needed to make one cake, and then multiply that by 7.

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The second way:
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6 0
3 years ago
Use the distributive property to write the following expression in expanded form. 4(x+y)
SVETLANKA909090 [29]

Answer:

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Step-by-step explanation:

<u>Step 1:  Distribute</u>

4(x + y)

(4 * x) + (4 * y)

(4x) + (4y)

<em>4x + 4y</em>

<em />

Answer:  4x + 4y

7 0
4 years ago
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