Plzzzzzzzzzz helpToni measured the height of her bedroom doorway with a measuring tape. She measured the height as 171 cm. The doorway’s actual height is 182.8 cm.
What is the percent error in Toni’s measurement? Round to the nearest tenth of a percent, if necessary.
A.
0.12%
B.
6.5%
C.
6.9%
D.
11.8%
Answers
-- The height of the doorway is really 182.8 cm.
-- Tamara measured 171 cm.
-- That was not exactly right.
She was off by (182.8 - 171) = 11.8 cm .
-- Compared to the real true number,
the error was
(11.8 / 182.8) = 0.0646 of it .
-- To change a decimal to percent,
move the decimal point two places that way ==> .
0.0646 = 6.46%
Rounded to the nearest tenth of a percent,
6.46% ==> 6.5% .
Her error should really be called -6.5% , because
her measurement was too low.
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The algebraic expression for "4 inches more than twice Julie’s height" is 2x + 4, where "x" represents Julie's height in inches.
To translate the phrase "4 inches more than twice Julie’s height" into an algebraic expression, we use the variable "x" to represent Julie’s height.
Represent Julie's height with the variable "x".
Twice Julie's height is 2 times "x", which can be expressed as 2x.
Add "4 inches more" to the twice Julie's height, resulting in 2x + 4.
The final algebraic expression is 2x + 4, which represents "4 inches more than twice Julie’s height" in terms of the variable "x."
For example, if Julie's height is 5 inches (x = 5), the expression evaluates to 2(5) + 4 = 14, meaning she is 14 inches tall in this context.
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Answer:
J is Julie's height. Twice Julie's height is 2J. The sum of 8 and twice Julie's height is 8+2J.
Answers
Answer: 24cm²
Step-by-step explanation:
Let square with length 5cm be represented with A, and square with 7cm be represented with B.
Area of a square is L²
Square A will have an area of 5² = 25cm²
Square B will have an area of 7² = 49cm²
Total area between the two squares will be = Area of Square (B - A)
i.e.
Total Area = 49cm² - 25cm² = 24cm²
Answers
The number 0.185 repeating can be represented as the fraction 185/999 in its simplest form.
What is the fraction?
A fraction is defined as a numerical representation of a part of a whole that represents a rational number.
To convert this number into a fraction, we can use the following steps:
Let x = 0.185185185...
Multiply both sides of the equation by 1000 to move the decimal point three places to the right:
1000x = 185.185185...
Subtract the left side of the equation from the right side:
1000x - x = 185.185185... - 0.185185185...
Simplify the right side of the equation by canceling out the repeating decimals:
1000x - x = 185
Combine like terms on the left side of the equation:
999x = 185
Solve for x by dividing both sides of the equation by 999:
x = 185/999
Therefore, 0.185 repeating can be represented as the fraction 185/999 in its simplest form.
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37 over 200
Answers
3 x 8=24, then you add the 7 and you get 31.
Answers
Answer:
Delaney has 36 books and 24 movies currently
Step-by-step explanation:
Given:
Delaney has 4 times as many books as she has movies.
she buys 15 more movies
Ratio of movies to books = 2:3
To Find:
The number of books and movies she is having currently = ?
Solution:
Let the number of movies be x
Then the number of books is 4x
After she buys 15 books, the number of books will be
x+15
Now the ratio of movies to books is 2 : 3
On solving
x = 9
The number of book is
=>
=>
=> 36
The number of movies is
=>x + 15
=>9+15
=> 24
Picture has it all..
Answers
tan(x) = 1.1
x = 48 degrees
Answer
C. 48°