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densk [106]
4 years ago
9

I think of a number multiply it by 2, subtract 5 and multiply the result by 2

Mathematics
1 answer:
zalisa [80]4 years ago
7 0
Call our original number n. Then here's what we did in an equation:
(n*2-5)*2=2

We can solve this for n:
n*2-5=1
n*2=6
n=3
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In 2009, a town's population was about 9,000 residents. In 2014, the population was about 12,500 residents. Which linear model r
jek_recluse [69]

Answer:

The linear function that discribes the size of the population in function of the t in years is p = 700t - 1,397,300

Step-by-step explanation:

A linear function is defined by a line, so in order to determine the linear function we can use the two points that were given to us to create a line equation and use that as our linear function. The points given to us were (2009; 9000) and (2014; 12500), in this case the year is our value of "x" and the size of the population is our value of "y". The first step is to find the slope of the line which is given by:

m = (y2 - y1)/(x2 - x1)

m = (12500 -9000)/(2014 - 2009) = 3500/5 = 700

Then we can use the slope and the first point to build the equation:

p - 9000 = 700*(t - 2009)

p = 700t - 1406300 + 9000

p = 700t - 1397300

5 0
3 years ago
Simplify 9x^2-3x(2x-4)-6x
Vinvika [58]
The answer is 
3 x^{2} +6x<span><span>
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3 0
3 years ago
At a school dance, the ratio of girls to boys is 8:3. If there are 528 students at the dance, how many are boys and how many are
weqwewe [10]

Answer:

144 boys and 384 girls

Step-by-step explanation:

8 girls to every 3 boys. You can make an equation to solve this: 8x + 3x = 528. 528 = 11x. Then divide 528 by 11 to get 48. x=48. 8(48) = 384 girls. 3(48) = 144 boys.

6 0
3 years ago
Can u help please.....
d1i1m1o1n [39]

Benito drew a line with a slope of 3

8 0
3 years ago
Read 2 more answers
There are 16 players in my poker group that meets the first Tuesday of every month. Ten of the players are male and six are fema
rodikova [14]

Answer:   Hello mate!

in your group, there are 16 players, 10 males, and 6 females.

in this case, 5 males already arrived (then there are 5 other males left)

and 4 females already arrived (then there are other 2 females left)

then there are a total of 7 players left, where 2 are female and 5 are males.

you want to know the probability that the next person through the door will be a male.

this is the number of male players left, divided by the number of players left: 5/7 = 0.71

then the probability that the next person through the door will be a male is 0.71.

5 0
3 years ago
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