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adoni [48]
3 years ago
13

Irina predicted that she would sell 75 books, but she actually sold 95 books. Which expression would find the percent error?

Mathematics
2 answers:
CaHeK987 [17]3 years ago
4 0
Percent error = |actual error - expected error/ expected error| * 100%
(|75-95|)/95 = 0.21
0.21 * 100% = 21% error
dolphi86 [110]3 years ago
3 0

Answer:

d

Step-by-step explanation:

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Which ratios form a proportion
Lelu [443]

Answer:

C

Step-by-step explanation:

To form a proportion, you need two equal ratios.

Divide the numerator by the denominator of all fractions.

Any two fractions that are equal are a proportion.

A.

4/9 = 0.4444...

9/4 = 2.25

Fractions are not equal. Not a proportion.

B.

4/10 = 0.4

10/25 = 0.4

Fractions are equal. Proportion

C.

4/11 = 0.363636...

6/13 = 0.46153846...

Fractions are not equal. Not a proportion.

D.

I can't read the fractions, but do the same I did above.

Divide each numerator by the denominator and compare the decimals. If they are equal its a proportion. If theya re not equal, it is not a proportion.

3 0
2 years ago
Let x be a real number. Find the lowest possible value of |5x^2 - 16| + |10x - 2|.
BlackZzzverrR [31]

Since the equations are for absolute value this means any negative number used the answer would become positive, so to get the lowest value possible x would need to equal 0, which would eliminate the x variable from the equations.

Replace x with 0 and solve:

|5(0)^2 - 16| + |10(0) - 2|

Simplify:

|0 - 16| + |0 - 2|

|-16| + |-2|

Combine:

|-18|

Absolute Value = 18

4 0
3 years ago
Find the measure of the angle formed by the hands of a clock when it is 7:00 (the angle formed between 7 to 12, clockwise).
aev [14]
The answer you are looking for is an obtuse so it would be more than 90 degrees. may i have brainlest
6 0
3 years ago
£50 is worth €65 how many euros is £220 worth
Cloud [144]

Answer:

£220 is worth €247

4 0
3 years ago
Phillip claimed that the expression − p + 5 + p is positive for any value of p. Determine whether Phillip’s statement is always
DIA [1.3K]

Answer:

always true.

the expression will always be equal to +5 because -p+p is zero

at any given value to p, the value is constantly +5

8 0
3 years ago
Read 2 more answers
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