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attashe74 [19]
4 years ago
13

Please help!! #13 the picture is my problem! Pre- Algebra (math) (10 points!)

Mathematics
2 answers:
taurus [48]4 years ago
5 0
2x + 5x + 4 = 25
7x + 4 = 25
7x = 25 - 4
7x = 21
x = 21/7
x = 3 <==
iren2701 [21]4 years ago
4 0
Well you know that the rope as a whole is 25 ft long, so just make each piece equal that:

2x + 5x + 4 = 25
*Minus 4 to both sides to get the "x" values alone*
2x + 5x = 25 - 4
7x = 21
*Divide by 7 on both sides to get "x" alone*
x = 21/7
x = 3

Hope that helps! :)
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In a soccer tournament teams receive 6 points for winning a game 3 points for trying a game and 1 point for each goal they score
Alex777 [14]
I beleive it is 6(2) + 3 (1) + 1(5) = 20 points :)
8 0
3 years ago
3y-15-6x in slope intercept form
ASHA 777 [7]
When you think of slope intercept form we think of Y=mx+b
m=slope and b = intercept

So all you do is solve for Y in your given equation.

Im going to guess the equal sign  because you didn't include it. I can fix the answer is I was wrong.

3y-15=6x    (add 15 to both sides)

3y=6x+15 (divide by 3)

y=2x+3 (final answer)


5 0
3 years ago
trufant is yoleni's older brother. the sum of their ages is 47. the difference of their ages is 9. how old are trufant and yosle
JulsSmile [24]

Answer:

Trufant is 28 while his younger brother(Yolensi) is 19

5 0
3 years ago
Find the slope of each line. <br> 2
ratelena [41]

Answer: m=3/2

Step-by-step explanation: the slope starts from the left side and the line is going up meaning its positive, now the line is going up by 3s and to the right in 2s.

5 0
3 years ago
The population of a town is 13,000. It decreases at a rate of 5% per year. In about how many years will the population be less t
just olya [345]

This is an exponential decay problem.

Using the equation Y = a *(1-rate)^time

where Y is the future value given as 12,000 and a is the starting value given as 13,000.

The rate is also given as 5%.

The equation becomes:

12,000 = 13,000(1-0.05)^x

12,000 = 13,000(0.95)^x

Divide each side by 13000:

12000/13000 = 0.95^x/13000

12/13 = 0.95^x

Use the natural log function:

x = ln(12/13) / ln(0.95)

x = 1.56 years. ( this will equal 12,000

Round to 2 years it will be less than 12000.

3 0
4 years ago
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