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notka56 [123]
2 years ago
8

Directions: Review writing expressions to represent situations. Identify the variables,coefficients, and constants.

Mathematics
1 answer:
mojhsa [17]2 years ago
7 0

#1

  • Let the number be x
  • Three times the number means 3x.
  • 8more girls

The expression is

  • 3x+5

#2

  • He began as x
  • Now he has 9 times more

So the expression is

  • 9x

#3

  • Dimes be a
  • Nickel be b
  • Quarter be z

The expression is

  • 3a+b+z

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Calculate the area of a circle with radius of 3.5 (1dp) please help
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The area = r^2 *pi
So it's 3.5 * 3.5 which is 12.25 pi
 
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3 years ago
Hey guys, I need help with these Scale factor problems! problems are linked in a screenshot below:
AVprozaik [17]

Answer:

  1. A → B: 1/3
  2. correct
  3. A → B: 2/5

Step-by-step explanation:

It is clear from your answer to the second part that you know the A→B scale factor is the reciprocal of the B→A scale factor. Use that fact for the other two parts of the question.

  1. A → B = 1/3; B → A = 3
  2. A → B = 2; B → A = 1/2
  3. A → B = 2/5; B → A = 5/2

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It is convenient to find a unit length (or the smallest length) on the smaller figure, then see how much that is multiplied by to get the larger figure.

  1. B : A = 1 : 3
  2. A : B = 1 : 2
  3. B : A = 2 : 5

Once you have these ratios, you need to determine what the notation A→B is supposed to mean. Here, we presume it means B/A.

7 0
3 years ago
ANSWER QUICK I AM GIVING 25 POINTS AND MARKING BRAINLIEST PLEASE HELP THANK YOUUU! no explanation needed btw just tell me a, b,
Vesnalui [34]

9514 1404 393

Answer:

  C.  25/6 ft²

Step-by-step explanation:

Let's call the dimensions of Rectangle B x and y. Then ...

  xy = 5 ft²

and

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We want to find the value of y². Solving the first equation for y, then substituting for x², we have ...

  y = (5 ft²)/x

  y² = ((5 ft²)/x) = 25 ft⁴/x² = 25 ft⁴/(6 ft²)

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3 years ago
What is 20 plus -14?
oksian1 [2.3K]
20 + -14 = 6
I hope I helped you
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