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bija089 [108]
3 years ago
5

Lynn measured the length of her front yard by counting her strides. The yard measured 18.5 feet long. Emily measured the same ya

rd using a tape measure, and found that it was 20 feet long. What was the percent error of Lynn's measurement?
Mathematics
1 answer:
Shalnov [3]3 years ago
7 0

Answer:

8.11%

Step-by-step explanation:

We need to find the percentage error. We can follow the formula shown below:

PE=\frac{New-Orig}{Orig}*100

Where

PE is the Percentage Error

New is the newest measure (given as 20 feet)

Orig is the original, or first, measure (given as 18.5)

Substituting and finding the PE:

PE=\frac{New-Orig}{Orig}*100\\PE=\frac{20-18.5}{18.5}*100\\PE=\frac{1.5}{18.5}*100\\PE=8.11

Tagging the percentage , percent error is about 8.11%

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APY means ________________.​
beks73 [17]

Answer:

annual percentage yield

Step-by-step explanation:

APY means annual percentage yield

6 0
3 years ago
Read 2 more answers
How many 1 over 8 isin 1 whole and how many 1/8 are in 3 whole
Black_prince [1.1K]
You divide one by 1/8 to get the first answer.
It is obvious there are 8 pieces of eight in one whole.
Now to get the amount of eights in three wholes, multiply how much is in one whole by 3 to get 2.
4 0
3 years ago
Read 2 more answers
If sin x=2/9,x, in quadrant i, then find(without findingx): sin(2x), cos(2x), tan(2x)
Sergio039 [100]
We have that
<span>sin x=2/9

we know that
sin</span>² x+cos² x=1---------> cos² x=1-sin² x-----> cos² x=1-(2/9)²
cos² x=1-(4/81)------> (81-4)/81-----> 77/81
cos x=√(77/81)

Sin 2x = 2 sin x cos x-------> 2*(2/9)*(√(77/81))----> (4/81)*√77---> 0.43

Sin 2x=0.43
so
cos² 2x=1-sin² 2x---------> 1-[0.43]²-----> 1-[0.1878]----> 0.81
cos² 2x=0.81-----------> cos 2x=0.9

tan 2x=sin 2x/cos 2x--------> tan 2x=0.43/0.9---------> tan 2x=0.48

the answers are
sin 2x=0.43
cos 2x=0.9
tan 2x=0.48


8 0
4 years ago
What is the answer to my question
Vedmedyk [2.9K]
672 cm³
Step-by-step explanation:
10x7x9=630
2x3x7=42
630+42=672
5 0
3 years ago
2(x+1)=38 I would just like to check my answer for this problem. I think x equals 16. But I would like to clarify
astraxan [27]

There are two methods to do this:

1. 2(x + 1) = 38

2*x + 2*1 = 38 (Expand the bracket)

2x + 2 = 38

2x = 36 (Subtract 2 from both sides)

x = 18 (Divide each side by 2)

2. 2(x + 1) = 38

(x + 1) = 19 (Divide each side by 2)

x = 18 (Subtract 1 from each side)

4 0
3 years ago
Read 2 more answers
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