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Ber [7]
4 years ago
7

How do you solve this problem 3x+2 (x+4)=x-(x+2)

Mathematics
1 answer:
Sidana [21]4 years ago
8 0
Expand the left and the right side .
3x + 2x + 8 = x - x - 2
then you simplify
5x + 8 =  - 2
then continue ...
you will get x = -2
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the figure is made of up of a cone and a cylinder, to the nearest whole number what is the approximate volume of this figure. PL
Deffense [45]
The total volume is the sum of volume of cone and volume of cylinder.

Volume of cylinder = πr²h
π = 3.14
r = 4/2 = 2 mm
h = 2 mm

So, volume of cylinder equals:

3.14 *(2)^{2}*2 =25.12 mm³

Volume of cone = \frac{1}{3} \pi  r^{2}h
π = 3.14
r = 2 mm
h = 3 mm

So, volume of cylinder equals:

\frac{1}{3}*3.14* (2)^{2}*3=18.84mm³

Thus, total volume of the figure = 25.12 + 18.84 = 43.96 mm³

7 0
4 years ago
Given f(x) = 3x – 2, find f(-5).
matrenka [14]

Step-by-step explanation:

put -5 into x

then

3*-5 is -15 (-2)

-17 is your answer

6 0
3 years ago
Read 2 more answers
The no solution for 6-3+4x+1
Nataly_w [17]
Yes there is a solution for 6-3+4x+1 it is
4+4x because u add up all the like terms or variable
3 0
3 years ago
Read 2 more answers
Solve the following equation:<br> 9n² - n - 2/3 = 0
KIM [24]

Answer:

see explanation

Step-by-step explanation:

Given

9n² - n - \frac{2}{3} = 0 ← multiply through by 3 to clear the fraction

27n² - 3n - 2 = 0 ← factoring

Consider the factors of the product of the n² term and the constant term which sum to give the coefficient of the n- term

product = 27 × - 2 = - 54 and sum = - 3

The factors are - 9 and + 6

Use these factors to split the n- term

27n² - 9n + 6n - 2 = 0 ( factor the first/second and third/fourth terms )

9n(3n - 1) + 2(3n - 1) = 0 ← factor out (3n - 1) from each term

(3n - 1)(9n + 2) = 0

Equate each factor to zero and solve for n

3n - 1 = 0 ⇒ 3n = 1 ⇒ n = \frac{1}{3}

9n + 2 = 0 ⇒ 9n = - 2 ⇒ n = - \frac{2}{9}

3 0
3 years ago
A raindrops has a mass of 0.50g. how many moles of water does a raindrop contain
alina1380 [7]
So, here you have to look at the periodic table and see what the molar mass of each molecule composing the water compound H_2 O
its two hydrogen atom plus an oxygen molecule, making it about 18g per mol.

That said, looking at the mass, we have to ask ourselves, if a mol of water contains 18g of mass, how many moles do we have in 0.5g of water? 
We just do a cross multiplication:
\frac{(0.5)}{18} =0.027 mol
7 0
4 years ago
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