5x^2-4x=6 solve for X

Zepler [3.9K]

The exact form of this would be 5squareroot of 2 or the decimal 7.0711

7 0

3 years ago

Margo wants new carpet and new wallpaper border for her bedroom. The room is 5.4 meters long and 4 7/8 meters wide. About how ma

Nezavi [6.7K]

S = a * b
The room is 5.4 meters long and 4 7/8 meters wide. = >
a = 5.4
b= 4 +7/8
S= $\frac{54*39}{10*8}$ = $\frac{27*39}{10*4}$ =26.325 meters ^ 2 - square yards of carpet
P = 2(a+b)=2*(54/10+39/8)=2*(216/40+195/40)=2*((216+195)/40)=
=216+195)/20=411/20=20.55 meters - yards of wallpaper border

3 0

3 years ago

How do I write the length of the radius if the diameter is 6 cm.

777dan777 [17]

Radius is half the diameter so, in this case, it would be 3 cm. Hope this helped! :,)

Radius= 3 cm

6 0

4 years ago

Example 2

PIT_PIT [208]

Answer: (a) 314.2cm², (b) 157.1cm², (c) 78.55cm² (e) 6.77

Step-by-step explanation: (a) Area of the circle with radius of 10 cm = πr²

= 3.142 × 10 × 10

= 3.142 × 100

= 314.2cm²

The formula = πr²

(b) Area of the half of a circle known as semicircle

= πr²/2

= 3.142 ×10 × 10/2

= 3.142 × 50

= 157.1cm²

The formula = πr²/2

(c) A quarter of a circle is called quadrant

= πr²/4

= 3.142 × 10 × 10/4

= 314.2/4

= 78.55cm²

The formula is written thus = πr²/4, which implies that the circle is divided into 4 unit

(d) The conjecture about how to determine the area of the sector is

Formula of a sector = ∅/360(πr²)

Information

The arc cant be 60°, therefore information incomplete.

(e) Area of the sector with the angle AOB of 60° = 24.

To find the radius of the angle, make v the subject of the formula from the formula.

Sector area = πr²∅/360°

equate formula to 24.

Therefore πr²∅/360° = 24

Multiply through by360° to make it a linear expression

It now becomes πr²∅ =24× 360°

r² = 24 x 360/π × ∅°

r² = 24 × 360° /3.142 × 60°

r² = 3,640/188.52

r² = 45.8

To find r , we take the square root of both side by applying laws of indicies

Therefore r = √45 .8

r = 6.77

(f) General formula = ∅°/360° × (πr²)

angle substended at centre by the arc = x°

assuming the radius of the circle = ycm, Therefore, area of the sector = { ∅°/360° × πy² }

8 0

3 years ago

Which sequences are geometric? Check all that apply.

zhenek [66]

Answer:

The sequences which are geometric are

16,-8,4,-2,1

625,125,25,5,1

-15,-18,-21.6,-25.92,-31.104

Step-by-step explanation:

Geometric sequences are ones in which you multiply or divide to get the next terms in the sequence.

Cheers

7 0

3 years ago