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Anarel [89]
3 years ago
7

Can anyone help me????

Mathematics
1 answer:
Ne4ueva [31]3 years ago
8 0

Answer:

Ed used 39/60 of one hour to complete his tasks.

Step-by-step explanation:

Find the least common denominator (LCD), which would be 20

Then, find how to get from 5 to 20 and 4 to 20.

Use division.

20/5 = 4, 20/4 = 5

After this, multiply the numerator to the according number.

2*4 = 8 = 8/20

1*5 = 5 = 5/20

Make the denominator 60 to represent 60 minutes in one hour

5/20*3/3 = 15/60

8/20*3/3 = 24/60

Add the two results.

15/60 + 24/60 = 39/60

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What is the nth term of quadratic sequence 4 7 12 19 28
Anni [7]
We find the first differences between terms:
7-4=3; 12-7=5; 19-12=7; 28-19=9.
Since these are different, this is not linear.
We now find the second differences:
5-3=2; 7-5=2; 9-7=2. Then:

Since these are the same, this sequence is quadratic.
We use (1/2a)n², where a is the second difference:
(1/2*2)n²=1n².

We now use the term number of each term for n:
4 is the 1st term; 1*1²=1.
7 is the 2nd term; 1*2²=4.
12 is the 3rd term; 1*3²=9.
19 is the 4th term; 1*4²=16.
28 is the 5th term: 1*5²=25.

Now we find the difference between the actual terms of the sequence and the numbers we just found:

4-1=3; 7-4=3; 12-9=3; 19-16=3; 28-25=3.

Since this is constant, the sequence is in the form (1/2a)n²+d;
in our case, 1n²+d, and since d=3, 1n²+3.
The correct answer is n²+3
7 0
3 years ago
The slope of a line is -1/3, and the y intercept is 10/3. What is the equation of the line written in slope-intercept form
REY [17]

Should be y=-1/3x+10/3

Hope this helps :)                                                                                                                                                          

7 0
3 years ago
HELP ME OUTTTT PLEASEEEEEE
Alex

Answer:

3

Step-by-step explanation:  

hope this helps

7 0
3 years ago
The perimeter of an equilateral triangle is 5.1 m. How long are its sides?
Alja [10]

Answer:

1.7 meters

Step-by-step explanation:

because an equilateral triangle has 3 sides and they are all the same you can just divide 5.1 by 3

5.1 / 3 = 1.7

it is 1.7 m

7 0
2 years ago
Read 2 more answers
Work out m and c for the line:<br> y = X – 2
RUDIKE [14]
Y = mx + c therefore
m = 1
c = -2
4 0
2 years ago
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