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3 years ago

two similar figures have an area of 25 in^2 and 4 in^2, what is the ratio of the corresponding sides?

Mathematics

1 answer:

choli [55]3 years ago

7 0

Answer:

5/2

Step-by-step explanation:

ratio of sides=(√25)/(√4)=5/2

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Select all the statements that apply to the concept of a residual

skelet666 [1.2K]

Answer:

first and second one, and fourth one

Step-by-step explanation:

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3 years ago

If an experimenter conducts a t test for independent means and rejects the null hypothesis, the correct interpretation is that:

lisabon 2012 [21]

Answer: C

Step-by-step explanation:

Rejecting the null hypothesis means we've found a significant difference in the means. That means the probability that we'd see means so far apart by chance is less than our threshold of significance.

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3 years ago

There were 200,000 animals of a certain species in 1980. Since then,this number has decreased by 4.5% each year. Approximately h

g100num [7]

Answer: Approximately 25187 animals of this species will be left in 2025

Step-by-step explanation:

We would apply the formula for exponential decay which is expressed as

y = b(1 - r)^x

Where

y represents the population of animals after x years.

x represents the number of years.

b represents the initial population of animals.

r represents rate of decay.

From the information given,

b = 200000

r = 4.5% = 4.5/100 = 0.045

x = 2025 - 1980 = 45 years

Therefore,

y = 200000(1 - 0.045)^45

y = 200000(0.955)^45

y = 25187

8 0

4 years ago

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The volume of a spherical sculpture is 256 ft³. Rhianna wants to estimate the surface area of the sculpture. To do the estimate,

Brrunno [24]

Answer:

192 $ft^2$

Step-by-step explanation:

Given that

Volume of spherical sculpture = 256 ft³

$\pi$ is used as 3.

To find:

Surface area of sculpture = ?

Solution:

First of all, let us learn about the formula for Volume and Surface Area of Sphere:

1. $Volume =\frac{4}{3}\pi r^3$

2. $Surface\ Area = 4\pi r^2$

Given volume is 256 ft³.

$256 = \dfrac{4}{3}\pi r^3\\\Rightarrow 256 = \dfrac{4}{3}\times 3 r^3\\\Rightarrow 256 = 4 r^3\\\Rightarrow r^3=64\\\Rightarrow \bold{r = 4\ ft}$

Now, let us put r = 4 in the formula of Surface Area to find the value of Surface Area:

$Surface\ Area = 4\pi 4^2 = 4 \times 3 \times 16 = \bold{192\ ft^2}$

So, approximate surface area of sculpture is 192 $ft^2$ .

3 0

3 years ago

1.14 x 10^7/ 3.8 x 10^-7=

Kamila [148]

Answer:

3x10^23

Step-by-step explanation:

thats what i got on my calculator

8 0

3 years ago

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