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3 years ago

Х 2+4 = 2(x - 1)? Can someone help me out

Mathematics

2 answers:

ELEN [110]3 years ago

8 0

Answer:

x=4/3

Step-by-step explanation:

2+4=2(x-1) original

6=2(x-1) combine like terms

6=2x-2 multiply x-1 by 2

8=2x add 2 to both sides

4=x divide both sides by 2

KonstantinChe [14]3 years ago

7 0

6=2x-2 Mueve los términos
-2x=-2-6 Calcula
-2x=-8 Divide ambos lados
X=4 Solución

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The Great Pyramid in Giza, Egypt, is a square pyramid. The dimensions of the pyramid at the time of its completion are shown in

ryzh [129]

Answer:

Area of square pyramid is $153883.8\ m^{2}$ .

Step-by-step explanation:

Diagram of the given scenario is shown below,

Given that,

The Great Pyramid in Giza, Egypt is a square pyramid. The area of base shape is made up with square is $154 \ m^{2}$ . The side of the square is $230 \ m$ and The height of each triangle is $187 \ m$ .

So, Area of Square shape = $154 \ m^{2}$

Side of square = $230 \ m$

Height of each triangle = $187 \ m$

Finding the Height of triangular shape which is here known as slant height.

In Δ ABO, applying Right angle pythagorean Theorem,

Base $(BO)$ = $\frac{230}{2} = 115\ m$

Height $(AO)$ = $187\ m$

Now,

∴ $AB^{2} = AO^{2} \ + \ BO^{2}$

⇒ $AB= \sqrt{AO^{2} \ + \ BO^{2} }$

⇒ $AB= \sqrt{187^{2} \ + \ 115^{2} }$

⇒ $AB= \sqrt{34969 \ + \ 13225 }$

⇒ $AB= 219.53 \ m$

Then,

Area of square pyramid = $area \ of \ square + \ 4\times area \ of \ traiangle$

= $side\times side + 4\times\frac{1}{2}\times AB\times Base$

= $230\times 230 \ + 2\times 219.53\times 230$

= $52900 + 100983.8$

= $153883.8 \ m^{2}$

Hence, Area of square pyramid is $153883.8\ m^{2}$ .

6 0

3 years ago

Evaluate -x for x = -3.

adelina 88 [10]

X = -3
divide both sides by -1:-
-1x = -3/-1

-x = 3

3 0

3 years ago

Volume of a sphere with a diameter of 8 meters? Use 3.14 for pi.

kvasek [131]

Answer: " 267.95 m³ " .
______________________________________________________
Explanation:
________________________________________________________

V = (4/3) * $\pi$ * r³ ;

Given: diameter, "d" = "8 m" ;

radius, "r" = 8 m / 2 = 4 m "

V = (4/3) * $\pi$ * r³

V = (4/3) * $\pi$ *(4m)³

V = (4/3) * (3.14) * 4³ * m³ ;

V = (4/3) * (3.14) * (4*4*4) * m³ ;

V = (4/3) * (3.14) * (64) * m³ ;

V = 267.9466666666666667 m³ ;

round to: " 267.95 m³ " .
_________________________________________________________

4 0

3 years ago

Could you please help me with a and b

kifflom [539]

You have to get a calculator online

5 0

3 years ago

the spoke of wheel reaches from the center of the wheel to its rim. If the circumference of the wheel is 42 inches, how long is

xz_007 [3.2K]

If each spoke reaches from the center of the wheel to its rim, then that means that each spoke is as long as the radius.

To calculate radius:

C=2πr

π=3.14
C=42 inches

42=2(3.14)r
2*3.14=6.28
42=6.28r

Divide 42 by 6.28

42/6.28=6.68

length of each spoke is 6.68 inches.

3 0

3 years ago