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ratelena [41]
3 years ago
5

Keiko estimated the height of her office building to be 45 ft. The actual height of her office building is 42 ft

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
7 0

% error formula: | true value minus "your" (as in Keiko's) value | over true value, times 100.

so: 42 - 45 = 3 (it would be negative but we used absolute value, which is how it is supposed to be done. <u><em>3 is your absolute error</em></u>).

3/42 = 0.07143

0.07142 * 100 = <u><em>7.142%</em></u>. she was only 7.142% off from the right answer.

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Use the equation to identify a and b * a = 1/5 and b = 3 a = 3 and b = 1/5 a= 1/5 and b =1 a = 1 and b = 3
Nadya [2.5K]

Answer:

a = 3

b = \frac{1}{5}

Step-by-step explanation:

Given

f(x) = 3(\frac{1}{5})^x --- Missing from the question

Required

Identify a and b

The given equation is an exponential function and the general form is:

f(x) = ab^x

When f(x) = ab^x is compared to f(x) = 3(\frac{1}{5})^x

We have that: a = 3 and b = \frac{1}{5}

8 0
3 years ago
How much money does Mr.Williams need to budget for the museum tickets and parking?
Scrat [10]
I pretty sure the answer is $1086.80
okay so first you have the figure out how many students and teachers they're are gonna be. 
so if there's 171 students, and you need 2 adults for every 9 students then you need to divide 171 by 9 because it's 9 to a group so 1721 divided by 9 is 19. now you need to divide that by 2 because theres 19 groups of 9 and you need 2 adults for every 9, so 19 times 2 is 38. 
now that you have how many students and teachers are going you need to figure out how much is the total amount of tickets for everyone. if its 4.50 per student and 7.25 per teacher then you need to times $4.50 x 171 students and $7.25 x 38 adults. if you entered it right you should've gotten, $769.50 for the students and $275.50 for adults. add them both up. you should've gotten $1,045. 
okay so thats done with now the bus price. so if the bus price is 4% of the total price then you have to times .04 (4% in decimal) times $1045. the answer should be $41.80. so you $41.80 is the bus price now lastly you add that to the mount of the tickets. so last stop. $1045 + $41.80 = 1086.80 

So he needs to budget for the amount of $1086.80


I put the work down for you

4 0
3 years ago
The Huda family picked 800 cucumbers in tow days. They picked 124 more cucumber on the first day than on the second day. How man
raketka [301]
So it would be 775 answerd
8 0
3 years ago
Consider the diagram. BC is parallel to DE. Find the length of BC.
Lubov Fominskaja [6]

Answer:

It should be 5 but my brain is literally dead

Step-by-step explanation:

Please give brainlest

3 0
2 years ago
#2 <br> #3 <br> Need help for my discrete math class
miss Akunina [59]

For (2), start with the base case. When n = 2, we have

(n + 1)! = (2 + 1)! = 3! = 6

2ⁿ = 2² = 4

6 > 4, so the case of n = 2 is true.

Now assume the inequality holds for n = k, so that

(k + 1)! > 2ᵏ

Under this hypothesis, we want to show the inequality holds for n = k + 1. By definition of factorial, we have

((k + 1) + 1)! = (k + 2)! = (k + 2) (k + 1)!

Then by our hypothesis,

(k + 2) (k + 1)! > (k + 2) 2ᵏ = k•2ᵏ + 2ᵏ⁺¹

and k•2ᵏ ≥ 2•2² = 8, so

k•2ᵏ + 2ᵏ⁺¹ ≥ 8 + 2ᵏ⁺¹ > 2ᵏ⁺¹

which proves the claim.

Unfortunately, I can't help you with (3). Sorry!

3 0
3 years ago
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