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Ulleksa [173]
3 years ago
15

X +3/ 5 = 2 i need help

Mathematics
1 answer:
DochEvi [55]3 years ago
8 0

This equation basically says that a number plus 3/5 equals 2 so we can simply:

2 - 3/5 = x

Therefore x equals 1 & 2/5 or 1.4

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There are exactly 20 students currently enrolled in a class. How many different ways are there to pair up the 20 students, so th
sergij07 [2.7K]

Answer:

The students can be paired up in 654,729,075 ways

Step-by-step explanation:

The 20 people can organize themselves in a line. The first and second people can make up a pair, the 2nd and 3rd can do the same. This can be done until all 20 of them have a pair. This will be done in 20! ways

If the two people in a pair swap positions. In mathematics, it is considered as a different arrangement.  This can be done 2^{10} ways since there are 10 pairs We will have to divide by this.

If the 10 pairs can swap places with each other, it will form another pair. As a matter of fact, the 10 pairs can swap pairs with each other all they like. This can be done in 10! ways. we will also have to divide by this.

Hence the total number of ways = \frac{20!}{2^{10}\times 10! } = 654,729,075 ways

6 0
3 years ago
Find the value of x<br> (4x-20)°​
mario62 [17]

Answer:

Bro this has no solution

8 0
3 years ago
Read 2 more answers
Please Help! Algebra 2!
eduard

Answer:

The interest rate of the account is 3\%

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

t=14\ years\\ P=\$1,863\\ A=\$2,830.97\\n=4  

substitute in the formula above  and solve for r

\$2,830.97=\$1,863(1+\frac{r}{4})^{4*14}  

(2,830.97/1,863)=(1+\frac{r}{4})^{56}  

(2,830.97/1,863)^{1/56}=(1+\frac{r}{4})

[(2,830.97/1,863)^{1/56}-1]=\frac{r}{4}    

r=4*[(2,830.97/1,863)^{1/56}-1]\\ \\r= 0.03

Convert to percent

r= 0.03*100=3\%

8 0
3 years ago
You earn $9 per hour. Which equation shows the relationship between the time worked in hours, t, and the money earned in dollars
luda_lava [24]

Answer:

m=9t

Step-by-step explanation:

to figure out how much money you earned, you have to multiply how long you worked by the amount you get paid

6 0
3 years ago
Erin had 55 stuffed bears. She took out her 7 favorite and equally divided the rest among her 3 sisters. How many bears did each
m_a_m_a [10]

Answer:

16

Step-by-step explanation:

55-7= 48

48/3 = 16

5 0
2 years ago
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