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GalinKa [24]
2 years ago
15

Hey i can give u more points if u help me...

Mathematics
1 answer:
qwelly [4]2 years ago
3 0

Answer:

3x + 8x + 70 = 180

x= 10

Step-by-step explanation:

2b. ×x = 20

2c. 50

3. 2x + (5x -22)= 90

x= 16

3b. c. 58

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What is the intersection when you graph the following equations:
Natasha2012 [34]

Answer:

its -2x

Step-by-step explanation:

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Find the molar mass in grams of <br> CaSO4 * 2H20<br> grams
adoni [48]

Answer:

172 g/mol

Step-by-step explanation:

CaSO4 . 2H2O

Atomic mass of

Ca = 40

S = 32

O = 16

H = 1

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3 years ago
Please help with this
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D

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The first graph curves down

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2 years ago
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(1CQ) Determine whether the series -8/5+32/25-128/125+... is convergent or divergent.
Ivan

Answer:

The series is convergent answer ⇒ (a)

Step-by-step explanation:

* The series is -8/5 + 32/25 + -128/125 + ........

- It is a geometric series with:

- first term a = -8/5 and common ratio r = 32/25 ÷ -8/5 = -4/5

* The difference between the convergent and divergent

  in the geometric series is :

- If the geometric series is given by  sum  = a + a r + a r² + a r³ + ...

* Where a is the first term and r is the common ratio

* If |r| < 1 then the following geometric series converges to a / (1 - r).  

- Where a/1 - r is the sum to infinity

* The proof is:

∵ S = a(1 - r^n)/(1 - r) ⇒ when IrI < 1 and n very large number

∴ r^n approach to zero

∴ S = a(1 - 0)/(1 - r) = a/(1 - r)

∴ S∞ = a/1 - r

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∵ r = -4/5

∴ IrI = 4/5

∴ IrI < 1

∴ The series is convergent

3 0
3 years ago
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