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3 years ago

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Mathematics

1 answer:

professor190 [17]3 years ago

3 0

B: 3(4-3n)

hope this helps

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Which equation shows the value of -2/5-(-9/15)

enot [183]

Answer:

Step-by-step explanation:

-2/5 - (-9/15) = -2/5 + 9/15.

both of those equations are equivalent.

hope this helps.

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2 years ago

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The histograms below show the heights (in meters) of the tallest buildings in China and the United States.

USPshnik [31]

Answer:

A and B

Step-by-step explanation:

I tried it and it was correct. The United states has the tallest... and China has more buildings... are the correct ones.

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2 years ago

A family pass to the amusement park costs $54 Using the Distributive Property,write an expression that can be used to fine the c

snow_lady [41]

X represents the amount of children's tickets
y represents the amount of adult's tickets

8(x+y) = 54

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2 years ago

Tomtit [17]

This would be 525 / 0.70 = $750 Answer

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2 years ago

The mean length of 4 childrens' big finger is 14cm. The mean length of 9 adults' big finger is 16.1cm. What is the mean length (

Mamont248 [21]

Answer:

The mean length of the 13 people's big finger is 15.45 cm

Step-by-step explanation:

Given;

mean length of 4 childrens' big finger, x' = 14cm

mean length of 9 adults' big finger is 16.1cm, x'' = 16.1cm

Let the total length of the 4 childrens' big finger = t

$x' = \frac{t}{n} \\\\x' = \frac{t}{4}\\\\t = 4x'\\\\t = 4 *14\\\\t = 56 \ cm$

Let the total length of the 9 adults' big finger = T

$x'' = \frac{T}{N} \\\\x'' = \frac{T}{9}\\\\T = 9x''\\\\T = 9*16.1\\\\T = 144.9 \ cm$

The total length of the 13 people's big finger = t + T

= 56 + 144.9

=200.9 cm

The mean length of these 13 people's big finger;

x''' = (200.9) / 13

x''' = 15.4539 cm

x''' = 15.45 cm (2 DP)

Therefore, the mean length of the 13 people's big finger is 15.45 cm

3 0

3 years ago