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3 years ago

If a shape has triple the dimensions of a similar shape then it has _______ the area *

Mathematics

1 answer:

IrinaK [193]3 years ago

7 0

Answer:

9 times

Step-by-step explanation:

The best way to go about this is to give actual figures

Let us consider rectangular shape

Let us have a rectangle with dimensions 6 m by 12 m

The area will be 6 * 12 = 72 m^2

The shape having a similar dimension would have dimensions 12m by 36 m

So its area will be ;

18 * 36 = 648 m^2

So we finally proceed to make a division

Mathematically, that will be 648/72 = 9

So the area will be in the ratio of 1 to 9

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George buys a computer. He pays a deposit of £200 and six monthly instalments of £55_

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55 is the answer for this question

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2 years ago

Please help me enter a simplified expression for the amount, and dollars, that the company is paid

Ymorist [56]

13x125＋4d＋26x65＋5d

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3 years ago

Given that log, xy = 2 + 3 log, x - log, y, express y in terms of x.

FromTheMoon [43]

Answer:

the answer could be y=10+×

Step-by-step explanation:

its a long calculation.First,separate log xy into log x +log y and do it like usual way of doing algebra.then,cancel log(change 2 to log 10^2 bfr that) and u must get y^2=10^2+x^2.then square root the whole equation.

6 0

3 years ago

A real estate agency says that the mean home sales price in City A is the same as in City B. The mean home sales price for 30 ho

NikAS [45]

Answer:

a) The mean home sales price in City A is the same as in City B

The calculated value t = 2.1731 < 2.3924 at 0.01 level of significance

The null hypothesis is accepted

Step-by-step explanation:

Step(i):-

Given data The mean home sales price for 30 homes in City A is $127,466

Mean of the first sample(x₁⁻) = $127,466

Standard deviation of the first sample(s₁) = $25,877

The mean of the second sample(x₂⁻) = $112,349

standard deviation of the second sample(s₂) = $27,108

sample size n₁ = n₂ = 30

Step(ii):-

Null hypothesis : H₀ : The mean home sales price in City A is the same as in City B.

Alternative Hypothesis:H₁: The mean home sales price in City A is the not same as in City B.

The test statistic

$Z = \frac{x^{-} _{1}- x^{-} _{2} }{\sqrt{S^{2} (\frac{1}{n_{1} }+\frac{1}{n_{2} } } }$

where

$S^{2} = \frac{n_{1}S_{1} ^{2} + n_{2} S_{2} ^{2} }{n_{1} +n_{2}-2 }$

$S^{2} = \frac{30 X (25,877)^{2} + 30 X (27,108)^{2} }{30+30-2 }$

On calculation ,we get

$s^{2} = 726,446,272.24$

Test statistic

$t = \frac{127,466 -112,349 }{\sqrt{726,446,272.24 (\frac{1}{30}+\frac{1}{30 } }) }$

t = 2.1731

Degrees of freedom

γ = n₁ +n₂ -2

γ = 30+30-2 =58

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.005} = 2.3924$

Conclusion:-

The calculated value t = 2.1731 < 2.3924 at 0.01 level of significance

The null hypothesis is accepted

The mean home sales price in City A is the same as in City B.

3 0

3 years ago

HELLLPPP ASAP!!!!!

Oxana [17]

I'm not in that level

5 0

4 years ago

Read 2 more answers