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Veseljchak [2.6K]
3 years ago
12

PLSS HELP ME!!!question 3x - 4/5= - 1/2what is the value of x?​

Mathematics
1 answer:
Minchanka [31]3 years ago
7 0

Answer:

x = \frac{1}{10}

Step-by-step explanation:

Given

3x - \frac{4}{5} = - \frac{1}{2}

Multiply through by 10, the lcm of 5 and 2 to clear the fractions

30x - 8 = - 5 ( add 8 to both sides )

30x = 3 ( divide both sides by 30 )

x = \frac{3}{30} = \frac{1}{10}

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NEED ANSWERED ASAP WILL REWARD BRAINLIEST
Luda [366]

Answer:

The sum of the first 100 terms is 60400

Step-by-step explanation:

* Lets revise the arithmetic sequence

- There is a constant difference between each two consecutive

  numbers

- Ex:

# 2  ,  5  ,  8  ,  11  ,  ……………………….

# 5  ,  10  ,  15  ,  20  ,  …………………………

# 12  ,  10  ,  8  ,  6  ,  ……………………………

* General term (nth term) of an Arithmetic sequence:

- U1 = a  ,  U2  = a + d  ,  U3  = a + 2d  ,  U4 = a + 3d  ,  U5 = a + 4d

- Un = a + (n – 1)d, where a is the first term , d is the difference

 between each two consecutive terms n is the position of the

 number

- The sum of first n terms of an Arithmetic sequence is calculate from

 Sn = n/2[a + l], where a is the first term and l is the last term

* Now lets solve the problem

- We will use method (1)

- From the table the terms of the sequence are:

 10 , 22 , 34 , 46 , 58 , 82 , 94 , ............., where 10 is the first term

∵ an = a1 + (n - 1) d ⇒ explicit formula

∵ a1 = 10 and a2 = 22

∵ d = a2 - a1

∴ d = 22 - 10 = 12

- The 100th term means the term of n = 100

∴ a100 = 10 + (100 - 1) 12

∴ a100 = 10 + 99 × 12 = 10 + 1188 = 1198

∴ The 100th term is 1198

- Lets find the sum of the first 100 terms of the sequence

∵ Sn = n/2[a1 + an]

∵ n = 100 , a = 10 , a100 = 1198

∴ S100 = 100/2[10 + 1198] = 50[1208] = 60400

* The sum of the first 100 terms is 60400

7 0
3 years ago
Write an equation in point-slope form and in slope-intercept form for the line that passes through the given point
nexus9112 [7]

Answer:

point-slope:x-y+3

slope-intercept: y=x-3

4 0
3 years ago
Someone pls help me i really need this
lukranit [14]
Y=1\2x.
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5 0
3 years ago
Drag statements and reasons to complete the proof
Rzqust [24]

Answer:

see below

Step-by-step explanation:

1) Slope from P to Q is F/E

2) Definition of slope

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4 0
3 years ago
A) 5√160=
drek231 [11]

Answer:

a) 20\sqrt{35}

b) 7\sqrt{5}

c) 18\sqrt{2}

d) 5\sqrt{2}

e) 36\sqrt{3}

f) 72

g) 10\sqrt{3}

Step-by-step explanation:

8 0
3 years ago
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