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77julia77 [94]
2 years ago
13

Concrete tiles are made using buckets of cement, sand and gravel mixed in the ratio 1:4:6. If 20 buckets of sand are used, how m

any buckets of EACH of the following will be
needed?
a)
Cement:
T
b) Gravel:
Mathematics
1 answer:
slamgirl [31]2 years ago
7 0
20 buckets and cement
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Find the eighth term of the
Pie

Answer:

see explanation

Step-by-step explanation:

The n th term of a geometric sequence is

a_{n} = a₁ (r)^{n-1}

where a₁ is the first term and r the common ratio, hence

a_{8} = 6 × (-1/3)^{7} = 6 × - \frac{1}{3^{7} } = 6 × - \frac{1}{2187} = - \frac{2}{729}

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3 years ago
Factorise 3x^2-22x+7
Svet_ta [14]

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(3x+7)(x+5)

Step-by-step explanation:

i think lol

3 0
3 years ago
A bag contains 4 tan socks and 7 grey socks. emily reaches into the bag and randomly selects two socks without replacement. what
Y_Kistochka [10]
Tan socks = 4
Grey socks = 7
Total number of socks = 4+7 = 11 socks
Probability of picking a tan sock then grey sock:
P(T)*P(G) = (4/11)*(7/10) = 14/54

Probability of picking a Grey sock then Tan sock
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Probability of two different colored socks
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8 0
3 years ago
The product of two positive integer numbers is 30 and the sum of the same two numbers is 11. Find the
vampirchik [111]

Answer:

5 and 6

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call them a and b, respectively

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a+b=11 -> b+ 30/b=11

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3 0
3 years ago
Kenneth Drew a scale drawing of an apartment the scale of the drawing was 2 meters:1 meter the living room is 6 m long in real l
atroni [7]

Answer:

3 meters

Step-by-step explanation:

Given the scale drawing :

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6 meter = x

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x = 6/2

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Length of living room in drawing = 3 meters

3 0
3 years ago
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