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Harman [31]
3 years ago
12

The Average of 16 and x is 21 Find x? Please answer quick!

Mathematics
1 answer:
givi [52]3 years ago
7 0

Answer:

x = 26

Step-by-step explanation:

There are two numbers and average is the sum of a certain amount of numbers divided by the same amount.

21 × 2 = 42

42 - 16 = 26

x = 26

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Determine whether this statement is true or false. if two lines have the same slope, their equations describe the same line.
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Answer:

False

Step-by-step explanation:

When you say "slope", Im guessing your referring to the gradient (the steepness of the line).

If two lines have the same gradient their equations won't usually describe the same line because their 'y intercepts' will be different (the point in which the line crosses the y axis)

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3 years ago
If it’s costs 60 cents for 125 grammes. How much would 100 grammes cost?
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➷ Work out the cost per gram

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pshichka [43]

Answer:

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One day a store sold 21 sweatshirts. white ones cost​ $9.95 and yellow ones cost $ 11.50. in​ all, ​$235.30 worth of sweatshirts
FromTheMoon [43]
For this problem you have yo set up two equations.

White shirts = w Yellow shirts = y

1st: w + y = 21
2nd: 9.95w + 11.50y = 235.30

Now we're going to do system of equations using substitution.

If w + y = 21, then y = 21 - w
If y = 21 - w, then you can substitute this in the second equation for y.

9.95w + 11.50(21 - w) = 235.30
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Now I'm finding out how many yellow shirts were sold using one of the two equations at the top.

w + y = 21
4 + y = 21
y = 17

So 17 yellow shirts were sold and 4 white shirts were sold.
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3 years ago
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