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ohaa [14]
3 years ago
8

Plz help! free brainlist and points! plz dont send wrong answers or false links solve: 3x +7 =-8

Mathematics
2 answers:
frosja888 [35]3 years ago
8 0

Step-by-step explanation:

3x+7=-8

then collecting like terms

3x=-8-7

3x=-15

x=-5

asambeis [7]3 years ago
5 0

Answer:

-5

Step-by-step explanation:

3x+7=-8

3x+7-7=-8-7

3x=-15

3x/3=-15/3

x= -5

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The selling price of a house dropped from $250,000 to $210,000 over a period of 5 years.
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20% decreased and it needs to increase 40,000 more to get To its normal value
5 0
3 years ago
Jackson can lay 6000 ft² of tile in 3 h. What is Jackson’s tile-laying rate?
pickupchik [31]

divide 6000 by 3

6000 / 3 = 2000

 so he can do 2000 sq ft per hour

4 0
3 years ago
Read 2 more answers
Which statement best describes Georgia’s Barrier Islands?
NemiM [27]

The statement that best describes Georgia’s Barrier Islands is; A: They protect the coastline during storms.

<h3>What is the correct statement about the place?</h3>

Barrier islands are called “barrier islands” due to the fact that they are good means of creating barrier between the mainland and the ocean.

Now, these barrier islands tend to shelter and protect the mainland from the powerful forces of wind, waves, and other natural disasters.  This they do by;

  • Sheltering the estuaries that form behind the barriers.
  • Allowing marshes to build up in the quiet waters of the sound.
  • Filtering of the pollutants that come in from mainland rivers by the marshes.
  • Providing valuable habitats for water animals and others in that ecosystem.
  • Serve aesthetic purposes

Barrier islands are a very much valuable resource. Despite the fact that they constantly change and may become badly eroded, they can still rebuild if left alone.

Thus, we can conclude that statement best describes Georgia’s Barrier Islands is that they protect the coastline during storms.

Read more about Correct statement at; brainly.com/question/25800832

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4 0
2 years ago
H(t)=(t+3)
Anarel [89]

Answer:

0

Step-by-step explanation:

h(t) = (t + 3)² + 5, -5 ≤ t ≤ -1

The average rate of change is the change in h over the change in t.

(h(-1) − h(-5)) / (-1 − (-5))

= ((-1 + 3)² + 5 − ((-5 + 3)² + 5)) / (-1 + 5)

= (4 + 5 − 4 − 5)) / 4

= 0

3 0
3 years ago
Find the radius of convergence, r, of the series. ? n2xn 7 · 14 · 21 · ? · (7n) n = 1
defon
I'm guessing the series is supposed to be

\displaystyle\sum_{n=1}^\infty\frac{n^2x^n}{7\cdot14\cdot21\cdot\cdots\cdot(7n)}

By the ratio test, the series converges if the following limit is less than 1.

\displaystyle\lim_{n\to\infty}\left|\frac{\frac{(n+1)^2x^{n+1}}{7\cdot14\cdot21\cdot\cdots\cdot(7n)\cdot(7(n+1))}}{\frac{n^2x^n}{7\cdot14\cdot21\cdot\cdots\cdot(7n)}}\right|

The first n terms in the numerator's denominator cancel with the denominator's denominator:

\displaystyle\lim_{n\to\infty}\left|\frac{\frac{(n+1)^2x^{n+1}}{7(n+1)}}{n^2x^n}\right|

|x^n| also cancels out and the remaining factor of |x| can be pulled out of the limit (as it doesn't depend on n).

\displaystyle|x|\lim_{n\to\infty}\left|\frac{\frac{(n+1)^2}{7(n+1)}}{n^2}\right|=|x|\lim_{n\to\infty}\frac{|n+1|}{7n^2}=0

which means the series converges everywhere (independently of x), and so the radius of convergence is infinite.
3 0
3 years ago
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