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Artyom0805 [142]
2 years ago
15

Reduce 72:81 to its simplist form

Mathematics
2 answers:
rewona [7]2 years ago
8 0
\frac { 72 }{ 81 } \\ \\ =\frac { 8 }{ 9 } \cdot \frac { 9 }{ 9 } \\ \\ =\frac { 8 }{ 9 } \cdot 1\\ \\ =\frac { 8 }{ 9 }
Dmitry_Shevchenko [17]2 years ago
4 0
Divide by 9/9 and you get 8/9 :)
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Help pls what's the common difference
horsena [70]

<u><em>Answer: </em></u>

#9: 5

#10: -2

#11: -1.5

<em><u>Step-by-step explanation:</u></em>

<em><u>#9:</u></em> 3,8,13,18,23,(28),(33),(38),.. <em>Go up by 5 each time, so the common difference is </em><u><em>5</em></u><em>.</em>

<u><em>#10:</em></u> 11,9,7,5,3,(1),(-1),(-3),... <em>Go down </em><em>(-)</em><em> by 2 each time, so the common difference is </em><u><em>-2</em></u><em>.</em>

<u><em>#11:</em></u> 3, 1.5, 0, -1.5, -3, (-4.5), (-6), (-7.5),... <em>Go down </em><em>(-) </em><em>by 1.5 each time, so the common difference is </em><u><em>-1.5</em></u><em>.</em>

7 0
3 years ago
A Student with N600 pocket money was spent on the following; Book N50, Pen N80, Maths Set N270, Bag N150, Food N50; the angles t
Vera_Pavlovna [14]
<span>Total pocket money: N600 Spent as follows: Books N50 Pen N80 Maths set N270 Bag N150 Food N50 To find: Angles that pen and food represent on pie chart. Solution: Pie is made on circle, and sum of angles of a circle is 360°. Angle that pen represent = (80/600)*360° = 48° Angle that food represent = (50/600)*360° = 30°</span>
3 0
3 years ago
Alex wants to sew a pillow in the shape below. How many square yards of fabric are needed to sew the pillow? Fabric is only sold
r-ruslan [8.4K]

The shape is missing, so i have attached it.

Answer:

2.6

Step-by-step explanation:

From the image attached, the diameter of the inner semi - circle is 0.5 yards while the length of each side of the pillow is 0.2 yards.

Thus, for us to find the length of the seam which is along the edges of the pillow, we will calculate the perimeter of the outer semicircle, then add the perimeter of the inner semicircle and also add the sides too.

Now, due to the fact that the length of the sides of the pillow are 0.2 yards each, the diameter of the outer circle would be;

0.5 + 0.2 + 0.2 = 0.9 yards. So, the perimeter of the outer semicircle is,

P0 = πd/2 = π × 0.9/2 =0.45π yds

The perimeter of the inner semicircle would be given as;

PI = πd/2 = π × 0.5/2 =0.25π yds.

Thus, we can calculate the total perimeter of the pillow as;

PT = P0 + PI + 0.2 + 0.2

PT = 0.45π + 0.25π + 0.2 + 0.2

PT ≈ 2.6 yards

Alex will need 2.6 yds

7 0
2 years ago
What is the area of the quadrilateral
adell [148]

lsumasAnswer:o que mi

tienedos que lao de rumel npor edes o diviy ldo a laedqude

Step-by-step explanation:

numero de lados por eldivides  las medidas y o todasmassu

7 0
2 years ago
A circle has a circumference of 361\pi361π361, pi. What is the diameter of the circle?
denpristay [2]
Remember, C=\pi d, where C is circumference and tex]d[/tex] is the diameter. They are related by a constant \pi (pi).

We can solve the above equation for d and then substitute our known values.
C=\pi d

d= \dfrac{C}{ \pi } =  \dfrac{361  \pi }{ \pi } = 361 \ units
7 0
3 years ago
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