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hammer [34]
3 years ago
14

Gregory predicts that 310 people will attend the spring play. And there was an actual total of 220 people who attended the sprin

g play. What is the percent error.
Mathematics
1 answer:
rodikova [14]3 years ago
8 0
310 - 220 = 90
90/310 = x/100 (cross multiplication) 
9000 = 310x
9000/310 = x
x = around 29%
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Colin buys a box of pasta that contains 823 cups of pasta. He uses 212 cups to make dinner. How much pasta is left?
inessss [21]

Given that,

Colin buys a box of pasta that contains 823 cups of pasta.

He uses 212 cups to make dinner.

To find,

How much pasta is left?

Solution,

Left pasta = Total cups of pasta - used cups of pasta

= 823 - 212

= 611

Hence, 611 cups of pasta is left.

4 0
3 years ago
I need help I tried to do this question with one C and with two C
OverLord2011 [107]

There are two c's. You must pay attention to capitalization, there's a lowercase c and an uppercase C which represent two different variables. Also, the W is capitalized which could make your answer incorrect if you don't use the same notation.

Solving for small c..

C = \frac{Wtc}{1,000}   \\\\ 1,000C = Wtc \\\\\frac{1,000C}{Wt}= c

So it's the answer shown in the picture, but it  should be a capital W instead of a lowercase w.  






3 0
3 years ago
The volume of a cone is 3rx? cubic units and its height is x units. Which expression represents the radius of the cone's base, i
Marianna [84]

Answer:

It is given that the volume of a cone = 3\pi x^3 cubic units

Volume of cone with radius 'r' and height 'h' = \frac{1}{3}\pi r^2h

Equating the given volumes, we get

3\pi x^3=\frac{1}{3}\pi r^2h

r^2h=3 × 3x^3

r^2h=9 x^3

It is given that the height is 'x' units.

Therefore, r^2x=9x^3

r^2=9x^2

Therefore, r=3 x

So, the expression '3 x' represents the radius of the cone's base in units.

3 0
2 years ago
What's the difference between 126 1/4 78 2/3
Stels [109]
Difference means subtract, so we use subtraction:

*first we need to make the fractions have the same denominator

1/4 = 3/12
2/3 = 8/12

126(3/12) - 78(8/12)
*since the fraction in the first term is smaller than the second, make it improper

125(15/12) - 78(8/12)

now simply subtract:

125 - 78 
= 47

15 - 8 
= 7
* this is now (7/12)

now put them back together:

47(7/12) 

That's the final answer!
3 0
4 years ago
What is the difference between integers and real numbers?
galina1969 [7]
Integers are positive and negative whole numbers no fractions or decimals.
Real numbers do have fractions and decimals that integers do not.
5 0
3 years ago
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