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Makovka662 [10]
3 years ago
9

I need help in this math number 7,I got the picture here for u to know what to do because I don’t understand the question ppplll

lzzzz help!!!

Mathematics
1 answer:
tia_tia [17]3 years ago
5 0

You have to find a common denominator for both fractions. I chose the denominator to be 10, so the 1/2 will become 5/10, and 1/5 will become 2/10.

Subtract 5/10 from 2/10. You will get -3/10.

Answer: -3/10

You can check your answer by solving 1/2-3/10=1/5 to see if it is true. (It is:)

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If prepresents the number of pizzas ordered, and srepresents the number of slices per pizza, then what does ps ⋅ repre
ahrayia [7]

Answer:

Let us assume here, in this situation that each page has the same weight so if i want to find the weight of the complete stack, i will multiply the number of sheets of paper by the weight of a single sheet of paper.

Step-by-step explanation:

4 0
3 years ago
Sandra wrote the sequence shown:
-BARSIC- [3]

Answer:

2n^2 + n + 4.

Step-by-step explanation:

7, 14, 25, 40, 59

The differences  are 7, 11, 15, 19 which is  arithmetic sequence so the given sequence is quadratic.

Compile a table:

n                     1      2      3      4      5

term               7    14    25    40    59

Diff:                    7      11     15     19

Diff:                      4       4      4            - this indicates that first part is 2n^2.

2n^2               2    8    18    32     50

term-2n^2      5    6    7     8        9

- the nth term for the last sequence is  5+ (n - 1)d =  

= 5 + (n - 1)* 1

= n + 4.

So nth term for the original sequence is 2n^2 + n + 4.

8 0
4 years ago
0.240 seconds has how many significant figures
Nuetrik [128]

This has 3 significant figures because of the 0 at the right end of the number


7 0
3 years ago
A percent is the result of a number being expressed as a fraction
bezimeni [28]
Is this a true or false question?
7 0
3 years ago
Read 2 more answers
PLS HELP ME PLEASE
ivanzaharov [21]

Using the law of cosines, it is found that the distance across the lake is of 978.5 feet.

<h3>What is the law of cosines?</h3>

The law of cosines states that we can find the angle C of a triangle as follows:

c^2 = a^2 + b^2 - 2ab\cos{C}

in which:

  • c is the length of the side opposite to angle C.
  • a and b are the lengths of the other sides.

In this problem, the parameters are:

a = 800, b = 900, C = 70º.

Hence the distance across the lake is c, found as follows:

c^2 = a^2 + b^2 - 2ab\cos{C}

c² = 800² + 900² - 2(800)(900)cos(70º)

c² = 957491

c = \sqrt{957491}

c = 978.5.

The distance across the lake is of 978.5 feet.

More can be learned about the law of cosines at brainly.com/question/2491835

#SPJ1

3 0
2 years ago
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