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3 years ago

25) The area of a trapezium is 330cm2 and the length of one of

Mathematics

2 answers:

Leto [7]3 years ago

6 0

Answer:

Step-by-step explanation:

Grgrwrg

kari74 [83]3 years ago

4 0

Answer

steps

area of trapizium is a+b/2 * h.

we have a=14, h=15, area=330 and we need to find b

so, 14+b/2 * 15=330

we divide 15 on both sides so 14+b/2=22

we multiply 2 on both sides so 14+b=44

b=44-14

b=30

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Work out the surface area of this sphere.<br> Give your answer to 1 decimal place.

bearhunter [10]

Answer:

452.4

Step-by-step equation:

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plug 6 in for r

4π(6)² =452.389 rounded to 452.4

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3 years ago

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Phoenix [80]

Answer:

1) Refer to the picture

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3 years ago

X=3/5 y=1/3 z=2 4/5 <br><br> work out the value of Z+X x Y

alexandr402 [8]

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3 years ago

Which relationship is a direct variation?

Setler79 [48]

Option A is the relationship which shows a direct variation.

Step-by-step explanation:

The direct variation is a relationship between two variables in which one is the multiple of the other. It is given by the relation

$\frac{y}{x}=k$

Option A:

For $x=2$ and $y=1$ ,

$\frac{y}{x}=\frac{1}{2}$

For $x=4$ and $y=2$ ,

$\frac{y}{x}=\frac{2}{4}= \frac{1}{2}$

Since, the constant k is equal for all the values of x and y in the table, this relationship is a direct variation.

Option B:

For $x=2$ and $y=4$ ,

$\frac{y}{x}=\frac{4}{2}= 2$

For $x=4$ and $y=16$ ,

$\frac{y}{x}=\frac{16}{4} =4$

Since, the values of constant k is not equal for all the values of x and y in the table, this relationship is not a direct variation.

Option C:

For $x=1$ and $y=3$

$\frac{y}{x} =\frac{3}{1} =3$

For $x=2$ and $y=5$

$\frac{y}{x} =\frac{5}{2}$

Since, the values of constant k is not equal for all the values of x and y in the table, this relationship is not a direct variation.

Option D:

For $x=1$ and $y=-1$

$\frac{y}{x} =\frac{-1}{1} =-1$

For $x=2$ and $y=2$

$\frac{y}{x} =\frac{2}{2} =1$

Since, the values of constant k is not equal for all the values of x and y in the table, this relationship is not a direct variation.

Thus, Option A is the relationship which shows direct variation.

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3 years ago

To the nearest hundredth, what is the value of x?

Scrat [10]

value of 5 x 6 is 30 or the value of x + y if x = 6 and y = 3 is 9. Value can also refer to a variable or constant

7 0

4 years ago

Read 2 more answers