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olga_2 [115]
3 years ago
6

Find the length of side ab.

Mathematics
1 answer:
Fantom [35]3 years ago
7 0

Answer:

41

Step-by-step explanation:

First, set up the equation (2x+5) + (3x-2)+(3x)+(x)= 57. Add all of the sides together and solve for x. Next, plug in x to 2x+5, and you have your answer. I hope this helps

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-2x - 6xy - 3y +7x.....need help bc tomorrow have a test.​
murzikaleks [220]

Step-by-step explanation:

-2x - 6xy - 3y + 7x      <em>combine like terms</em>

= (-2x + 7x) - 6xy - 3y

= 5x - 6xy - 3y

4 0
3 years ago
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Find the sum of the series Summation from n equals 1 to infinity (StartFraction 3 Over StartRoot n plus 2 EndRoot EndFraction mi
Marizza181 [45]

Looks like the series is supposed to be

\displaystyle\sum_{n=1}^\infty\frac3{\sqrt{n+2}}-\frac3{\sqrt{n+3}}

The series telescopes; consider the kth partial sum of the series,

S_k=\displaystyle\sum_{n=1}^k\frac3{\sqrt{n+2}}-\frac3{\sqrt{n+3}}

S_k=\displaystyle\left(\frac3{\sqrt3}-\frac32\right)+\left(\frac32-\frac3{\sqrt5}\right)+\cdots+\left(\frac3{\sqrt{k+1}}-\frac3{\sqrt{k+2}}\right)+\left(\frac3{\sqrt{k+2}}-\frac3{\sqrt{k+3}}\right)

\implies S_k=\dfrac3{\sqrt3}-\dfrac3{\sqrt{k+3}}

As k\to\infty, the second term converges to 0, leaving us with

\displaystyle\sum_{n=1}^\infty\frac3{\sqrt{n+2}}-\frac3{\sqrt{n+3}}=\frac3{\sqrt3}=\boxed{\sqrt3}}

7 0
3 years ago
No links, if answered correctly, I'll give brianliest!<br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7D%20%282%5E%7B3
jenyasd209 [6]
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Steps:
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8 0
3 years ago
-8=-(x+4) know the answer?
expeople1 [14]
X=4...................
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3 years ago
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How many millimeters are in 4.3 centimeters? How many centimeters are in 57 millimeters? Approximately how many centimeters are
3241004551 [841]

Answer:

a) 43

b) 5.7

c) 2.54

Step-by-step explanation:

The metric system is so easy to work with, everything is in base of 10, and all measures use a prefix. Here, we're talking about length, with the main measure being the meter.

1 m = 100 centimeters (centi- = 1/100)

1 m = 1000 millimeters (milli- = 1/1000)

So, for each centimeter, you have 10 millimeters.

a) How many millimeters are in 4.3 centimeters?

1 cm = 10 mm as shown above, so 4.3 cm = 43 mm

b) How many centimeters are in 57 millimeters?

10 mm = 1 cm so, 57 mm = 5.7 cm

c) Approximately how many centimeters are in an inch?

There are approximately 2.54 cm in an inch.  No real calculation to make here, it's just a unit conversion between systems, done following a known reference table.

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