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OLEGan [10]
2 years ago
5

ɢʀᴀᴅᴇ 8 ᴍᴀᴛʜᴇᴍᴀᴛɪᴄs ᴍᴇᴍᴏʀᴀɴᴅᴀᴍ ​

Mathematics
2 answers:
DIA [1.3K]2 years ago
7 0

Answer:

can u attach a question its not there

Gnom [1K]2 years ago
6 0

Answer:

Questions please!

Step-by-step explanation:

~Zayn

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The ratio of the area of a circle, P , to the area of another circle, Q , is 16/81 .
stellarik [79]
Ratio of  the radii = sqrt16 / sqrt81 = 4/9

so radius of circle Q  is  found by solving  4/9 = 8/x  where x = radius of Q

x = 2*9  = 18

radius of circle Q = 18.
6 0
3 years ago
Speed of a 747 airplane is 9,944 inches per second. What is the nearest foot per second
laiz [17]

Answer:

12 inches = 1 foot

9,944 inches = 9,944/12 = 826.67 ft

3 0
2 years ago
Uma piscina possui 5 m de comprimento, 3 m de largura e 2,5 m de profundidade. Calcule: a) A quantidade de azulejo necessária pa
Westkost [7]

Answer:

a) 70 azulejos

b) 37500 litros

c) 37.5m³

Step-by-step explanation:

A piscina tem 5 m de comprimento, 3 m de largura e 2,5 m de profundidade.

Comprimento = 5m

Largura = 3m

Profundidade (altura) = 2,5 m

Calcular:

a) A quantidade de ladrilhos necessária para cobrir a piscina

Isso é calculado como a área de superfície da votação

A = 2 (wl + hl + hw)

A = 2 × (3 × 5 + 2.5 × 5 +2.5 × 3)

A = 70 m²

Observe que:

1 m² = 1 azulejo

70 m² = 70 azulejos

b) A quantidade de água que pode caber na piscina.

1 m³ = 1000 litres

O volume de uma piscina = Comprimento × Largura × Altura

= 5m × 3m × 2.5m

= 37.5m³

1 m³ = 1000 litros

37.5m³ =

37.5 × 1000 litros

= 37500 litros

c) seu volume em m³

O volume de uma piscina = Comprimento × Largura × Altura

= 5m × 3m × 2.5m

= 37.5m³

7 0
2 years ago
PLZ HELP MATH
kobusy [5.1K]
Rational. equals 12
irrational. =4✓3
rational. equals 5
rational. equals 21
3 0
3 years ago
The volume of air inside a rubber ball with radius r can be found using the function V(r) = four-thirds pi r cubed. What does V
Nat2105 [25]

Corrected Question

The volume of air inside a rubber ball with radius r can be found using the function V(r) = four-thirds pi r cubed. What does V(5/7) represent?

Answer:

(B)the volume of the rubber ball when the radius equals five-sevenths feet

Step-by-step explanation:

The Volume of a sphere of radius r can be found using the formula:

V(r)=\dfrac43 \pi r^3

Therefore comparing the expression: V(\dfrac57)  with V(r):

Radius, r=\dfrac57

Thus, V(\dfrac57)  is the volume of a ball of radius \dfrac57 feet.

The correct option is B.

4 0
2 years ago
Read 2 more answers
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