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Paul [167]
4 years ago
12

Kira needs 3,000 milligrams of zinc for a science experiment. Which expression can be used to determine how many grams of zinc s

he needs? A. 1,000 ÷ 3,000
Mathematics
1 answer:
harina [27]4 years ago
8 0

Answer: 3,000 divided by a thousand

Step-by-step explanation: 1,000 milligrams equal one gram so you divide the number of milligrams by 1,000 to find out the number of grams.

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What is the value of x?
Licemer1 [7]
(6 - 2) x 180 = 720
720 - 112 - 120 - 100 - 128 - 133
= 127

4 0
3 years ago
Read 2 more answers
I don't know how to find x so i need help.
77julia77 [94]
I can help but can you tell me what kind of problem your doing.
8 0
3 years ago
Simplify:( 2x - 2)( 3x^2 + 9x - 3). What is the coefficient of the quadratic term?
mario62 [17]
You can use the distributive property and multiply this out.
  2x(3x² +9x -3) -2(3x² +9x -3)
  = 6x³ +18x²-6x -6x² -18x +6
  = 6x³ +12x² -24x +6

The coefficient of the x² term is 12.

_____
You can do this in your head using the techniques of Vedic mathematics. Write the coefficients of the two expressions, putting 0 for the x² coefficient in the first factor.
  0 2 -2
  3 9 -3

The x² term of the product will be the sum of the products of terms whose degrees add to 2. That is, the first term of the first row times the last term of the second row, plus the product of the middle two numbers in each row, plus the product of the first term in the second row times the last term in the first row.

Here's a more visual representation of the products that get added to get the coefficient of the x² term.
  0 2 -2
  3 9 -3 . . . . product is 0

  0 2 -2
  3 9 -3 . . . . product is 18

  0 2 -2
  3 9 -3 . . . . product is -6

The sum, of course, is 0 +18 -6 = 12
6 0
4 years ago
Please help me out !!! <br><br> *please answer asap*
mariarad [96]

Answer:

h(-3) = -5

Step-by-step explanation:

h(-3) = -I 2-(-3) I

Two negatives makes a positive: -(-3) = +3 or 3

h(-3) = -I 2+3 I

h(-3) = -I 5 I

*There is a negative that lies outside of the absolute value lines, which makes everything positive.

Making sure the 5 is positive, remove the absolute value lines.

h(-3) = - +5

The negative sign is still there.

A negative and a positive makes a negative.

h(-3) = -5

7 0
3 years ago
NEED ANSWER FAST, WITH WORK. BE DETAILED AND CORRECT OR BE REPORTED
8090 [49]

Answer:A: 8,000 bleacher seats. 4,500 + 7,500 premium seats = 12,000. 12,000/x = 3/2. x = 8,000.

Step-by-step explanation:

It was right on study island.

4 0
3 years ago
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