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Nina [5.8K]
2 years ago
10

Sara completes 2/5 of her math homework in class. What percent of homework is left for Sara to finish?

Mathematics
2 answers:
malfutka [58]2 years ago
4 0

Answer:

.006%

Step-by-step explanation:

Nataliya [291]2 years ago
3 0
100/5 = 20%. 20(2)= 40%. 100-40 = 60%. Hope this helps! c:
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Police use photographs of various facial features help witnesses identify suspects. One basic identification kit contains 195 ha
Brrunno [24]

Answer: 99 different faces

Step-by-step explanation:

Since a witness can clearly remember the hairline and the eyes and eyebrows of a suspect, and the

basic identification kit contains 195 hairlines, 99 eyes and eyebrows, the number of different faces that can be produced with this information will be 99

5 0
3 years ago
A beam of light from a monochromatic laser shines into a piece of glass. The glass has thickness L and index of refraction n=1.5
boyakko [2]

Additional information to complete the question:

How long does it take for a short pulse of light to travel from one end of the glass to the other?

Express your answer in terms of some or all of the variables f and L. Use the numeric value given for n in the introduction.

T = ___________ s

Answer:

 T = \frac{15}{f}

Step-by-step explanation:

Given:

Thickness og glass = L

Index of refraction n=1.5

Frequency = f

Wavelength = \frac{L}{10}

λ(air) = \frac{L}{10}

λ(glass) = λ(air) / n

             = \frac{\frac{L}{10}}{1.5}

             = \frac{L}{10} * \frac{1}{1.5}

             = \frac{L}{15}

V(glass) = fλ(glass)

              = f * \frac{L}{15}

          T = \frac{L}{V_{glass}} = \frac{15}{f}

     

7 0
3 years ago
Help please
andre [41]
I am pretty sure that it is B
6 0
3 years ago
If 3x + c = 4, then x equals <br>A: 4-c <br>B: 4 -c/3 <br>C: c-4/3 <br>D: c-4​
Colt1911 [192]

Answer:

4-c/3 is ans

Step-by-step explanation:

3x+c=4

3x=4-c

x=4-c/3

4 0
3 years ago
In an injection-molding operation, the length and width, denoted as X and Y, respectively, of each molded part are evaluated. Le
nika2105 [10]

Answer:

attached below

Step-by-step explanation:

Attached below are the Venn diagrams

A :  48 < X < 52   cm

B : 9 < Y <  11 cm

a) A

b) A ∩ B

c) A' ∪ B

d) A ∪ B

e)  for events to be mutually exclusive it means that both events can not occur simultaneously i.e. A ∩ B = 0

the process would not be successful hence the process would not produce parts with X = 50 cm and Y = 10 cm

6 0
2 years ago
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