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sveta [45]
3 years ago
12

What is the solution to 4(2x - 1) = 20? Enter your answer in the box. X=

Mathematics
2 answers:
Rina8888 [55]3 years ago
3 0

Answer:

x=3

Step-by-step explanation:

4(2x - 1) = 20

Divide each side by 4

4/4(2x - 1) = 20/4

2x-1 = 5

Add 1 to each side

2x-1 +1 = 5+1

2x= 6

Divide by 2

2x/2 = 6/2

x = 3

amm18123 years ago
3 0

Answer:

x=3

Step-by-step explanation:

Use the distributive property to expand the left side:

a(b-c)\\\\ab-ac

Simplify:

4(2x-1)=20\\\\4(2x)-4(1)=20\\\\8x-4=20

Isolate the variable, x. Add 4 to both sides of the equation:

8x-4+4=20+4\\\\8x=24

Now divide both sides by 8:

\frac{8x}{8} =\frac{24}{8}\\\\ x=3

The value of x is 3.

:Done

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Leya [2.2K]
  • Answer:

<em>= 26,(6)</em>

<em>≈ 26,7</em>

  • Step-by-step explanation:

<em>C = 5/9(F - 32)</em>

<em>= 5/9(80 - 32)</em>

<em>= 5/9(48)</em>

<em>= 5×48/9</em>

<em>= 240/9</em>

<em>= 26,(6)</em>

<em>≈ 26,7</em>

7 0
3 years ago
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Solve the problem. Find the surface area of a right regular hexagonal pyramid with sides 2 cm and slant height 5 cm. Round youra
BabaBlast [244]

Answer:

The surface area of the right regular hexagonal pyramid is 50.78 cm².

Step-by-step explanation:

Given:

A right regular hexagonal pyramid with sides(s) 2 cm and slant height(h) 5 cm.

Now, to find the surface area(SA) of the right regular hexagonal pyramid.

So, we find the area of the base(b) first:

Area of the base = \sqrt[3]{3}\times s^{2}

                            = \sqrt[3]{3}\times 2^{2}

On solving we get:

Area of the base(b) = 20.784

Then, we find the perimeter(p) :

Perimeter = s × 6

p=2\times 6=12

Now, putting the formula for getting the surface area:

Surface area = perimeter × height/2 + Area of the base.

SA=\frac{p\times h}{2}+b

SA=\frac{12\times 5}{2}+20.784

SA=30+20.784

SA=50.784

As, <em>the surface area is 50.784 and rounding to nearest hundredth becomes 50.78 because in hundredth place it is 8 and in thousandth place it is 4 so rounding to it become 50.78.</em>

Therefore, the surface area of the right regular hexagonal pyramid is 50.78 cm².

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3 years ago
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DaniilM [7]

Answer:

Step-by-step explanation:

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lawyer [7]

Answer:

x = 1/3

Step-by-step explanation:

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2 years ago
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xxTIMURxx [149]

Answer:

x = 27.2

Step-by-step explanation:

Apply trigonometric function to solve for x.

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Hypotenuse = x

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Sin 54 = Opp/Hyp

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