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nikdorinn [45]
3 years ago
15

Justine estimated that she would drive 24 miles to get to the beach. It is a good thing she had plenty of gas because she got lo

st and ended up driving 36 miles to get to the beach. What was the percent error
Mathematics
1 answer:
cupoosta [38]3 years ago
8 0

Answer:

50%

Step-by-step explanation:

Actual value - estimated value

Actual value = 24 miles

Estimated value = 36 miles

Estimated value - Actual value

= 36 miles - 24 miles

= 12 miles

% error = change in value / actual value × 100

= 12/ 24 × 100

= 1/2 × 100

= 50%

% error = 50%

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Can anyone help? thanks in advance!
Kipish [7]

Answer:

B(2,4)

Step-by-step explanation:

A(-1,-9)

M(0.5,-2.5)

with M we can find x₂ and y₂

x = 0.5

x = x₁+x₂/2

0.5 = (-1 + x₂)/2

(x₂ -1)/2 = 0.5

x₂-1=0.5×2

x₂-1=1

x₂=2

for y₂

y= -2.5

y=(y₁+y₂)/2

y=(-9+y₂)/2

-2.5=(-9+y₂)/2

-9+y₂=-2.5×2

-9+y₂=-5

y₂=-5+9

y₂=4

.: coordinates are B(2,4).

6 0
2 years ago
A 10 foot ladder is leaning against a building. It forms a 30 degree angle with the ground. How far away from the building is th
anastassius [24]

x = 8.66 ft

Step-by-step explanation:

cos 30 = adj/hyp = x/10

---> x = (10 ft)cos30

= 8.66 ft

5 0
2 years ago
What is the determinant of H<br><br>asap ​
dalvyx [7]

Answer:

H = 15

Step-by-step explanation:

If you need an explnation, I can provide it if needed! Cheers!

3 0
2 years ago
a parent donated 36 fruit cups and 24 bananas to the fifth grade. The teacher wanted to make field trip snack bags with donated
Katyanochek1 [597]

Answer:

24

Step-by-step explanation:

put one fruit cup and banana in each bag

6 0
1 year ago
A professor at a university wants to estimate the average number of hours of sleep the students get during exam week. The profes
balandron [24]

Answer:

The sample size is n = 2

Step-by-step explanation:

From the question we are told that

   The margin of error is  E =4.266

    The standard deviation is  \sigma = 2.539

From the question we are told the confidence level is  99% , hence the level of significance is    

      \alpha = (100 - 99 ) \%

=>   \alpha = 0.01

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  2.58

Generally the sample size is mathematically represented as  

   n = [\frac{Z_{\frac{\alpha }{2} } *  \sigma }{E} ] ^2

=>  n = [\frac{2.58  *  2.539  }{4.266} ] ^2

=>  n = 2

6 0
2 years ago
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