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Assoli18 [71]
3 years ago
15

Donna guessed there were 400 jellybeans in a jar. There were really 480 jellybeans. What was her percent of error?

Mathematics
1 answer:
dimulka [17.4K]3 years ago
6 0

Answer:

400 +480 =880

Step-by-step explanation:

0+0=0

8+0=8

4+4=8

880

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PLEASE HELP I WILL MARK YOU AS BRAINLIEST!
solong [7]

Answer:

12 units²

Step-by-step explanation:

Area = ½ × base × height

= ½ × 4 × 6

= 12 units²

8 0
3 years ago
Lori is three times as old as Michelle. In five years Michelle's age will be one half of Lori's age. How old are Lori and Michel
AURORKA [14]

Answer:

Lori's age is 15 years old and Michelle's age is 5 years old now

Step-by-step explanation:

Let

x-----> Lori's age

y ----> Michelle's age

we know that

x=3y-----> equation A

(y+5)=\frac{1}{2}(x+5) ----> equation B

substitute equation A in equation B and solve for y

(y+5)=\frac{1}{2}(3y+5)

2y+10=(3y+5)

3y-2y=10-5

y=5

Find the value of x

x=3(5)=15

therefore

Lori's age is 15 years old and Michelle's age is 5 years old now

7 0
3 years ago
A welder produces 7 welded assemblies during the first day on a new job, and the seventh assembly takes 45 minutes (unit time).
likoan [24]

Answer:

(a). 72.9%.

(b). 13.6 hr.

Step-by-step explanation:

So, we are given the following data or parameters or information which is going to assist us in solving this question/problem;

=> "A welder produces 7 welded assemblies during the first day on a new job, and the seventh assembly takes 45 minutes (unit time). "

=> The worker produces 10 welded assemblies on the second day, and the 10th assembly on the second day takes 30 minutes"

So, we will be making use of the Crawford learning curve model.

T(7) + 10 = T (17) = 30 min.

T(7) = T1(7)^b = 45.

T(17 ) = T1(17)^b = 30.

(T1) = 45/7^b = 30/17^b.

45/30 = 7^b/17^b = (7/17)^b.

1.5 = (0.41177)^b.

ln 1.5 = b ln 0.41177.

0.40547 = -0.8873 b.

b = - 0.45696.

=> 2^ -0.45696 = 0.7285.

= 72.9%.

(b). T1= 45/7^ - 045696 = 109.5 hr.

V(TT)(17) = 109.5 {(17.51^ - 0.45696 – 0.51^ - 0.45696) / (1 - 0.45696)} .

V(TT) (17) = 109.5 {(4.7317 - 0.6863) / 0.54304} .

= 815.7 min .

= 13.595 hr.

8 0
3 years ago
An explicit rule for a sequence tells how to find an as a function of blank the first term,A1, the next term an+1,
Maurinko [17]

Answer:

The correct answer is "the term number, n."

Step-by-step explanation:

3 0
2 years ago
What is 3/36 in simplest form
Rufina [12.5K]
3/36 in simplest form is 1/12
5 0
3 years ago
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