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4 years ago

3x+5=2x+8 it’s urgent!need step by step

Mathematics

2 answers:

zubka84 [21]4 years ago

6 0

Answer:

x =3

Step-by-step explanation:

step 1:Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

3*x-5-(2*x-8)=0

step 2:solve x+3=0

subtract 3 from both sides

step 3: x=-3

answer:x= -3

sammy [17]4 years ago

4 0

Answer:x=3

Step-by-step explanation:

Move variable to the left side and change its sign

3x-2+5=8

Move constant to the right side and change its sign

3x-2x=8-5

Combine like terms

X=3

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Given that 2sin^2 theta + sin theta -1 = 0, find the two values for sin theta.

Lisa [10]

2sin^2 θ + sin θ - 1 = 0
2sin^2 θ + 2sin θ - sin θ - 1 = 0
2sin θ(sin θ + 1) - 1(sin θ + 1) = 0
(2sin θ - 1)(sin θ + 1) = 0
2sin θ - 1 = 0 or sin θ + 1 = 0
sin θ = 1/2 or sin θ = -1

The two values of sin θ are 1/2 and -1

8 0

3 years ago

Please help 22 points

disa [49]

Answer:

8/15

Step-by-step explanation:

4/5 x 2/3 = 8/15

4/5 x 2/3 = 0.5333

hope this helps ^w^

3 0

3 years ago

Read 2 more answers

The measure of the supplement of an angle is 60 degrees less than four times the measure of the complement of the angle. Find th

Kisachek [45]

Answer:

Step-by-step explanation:

angle:: x

complemet: 90-x

supplement: 180-x

Equation:

180-x = 4(90-x)+60

180-x = 360 -4x + 60

3x = 240

x = 80 degrees (the angle)

90-x = 10 degrees (the complement)

180-x = 100 degrees (the supplement)

6 0

4 years ago

Write an equation of the line that passes through the given point and has the given slope. (3,-3) slope 3

taurus [48]

Answer:

y=3x-12

Step-by-step explanation:

y=mx+b

then plug in known variables to find b

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4 0

3 years ago

used to flavor vanilla ice cream and other foods) is the substance whose aroma the human nose detects in the smallest amount. Th

lubasha [3.4K]

Answer:

The cost to supply enough vanillin so that the aroma could be detected in a large aircraft hangar with a volume of 5.95 x 10^7 ft^3 is $ 0.07.

Step-by-step explanation:

The volume of the hangar is

$V=5.95*10^7 \, ft^3$

The minimal amount of vainilla needed to be detected in the hangar is equivalent to the threshold multiplied by the volume of the hangar:

$Va=V*Th=5.95*10^7 \, ft^3*2.0*10^{-11}\,\frac{g}{L}*\frac{28.317L}{1ft^3}\\ \\Va=336.9723*10^{-4} \, g=0.0337\,g$

The cost of this amount of vainilla is

$Cost = Va*p=0.0337\,g*\frac{104\, usd}{50\, g} =0.07 \, usd$

The cost to supply enough vanillin so that the aroma could be detected in a large aircraft hangar with a volume of 5.95 x 10^7 ft^3 is $ 0.07.

5 0

4 years ago