3 years ago

QueSLIUIT Which of the following is a rational number 15, V16, 127, V22

Mathematics

1 answer:

shusha [124]3 years ago

3 0

Answer:

.....

Step-by-step explanation:

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There are 90 new houses being built in a neighborhood. Last month, 13 of them were sold. This month, 15 of the remaining houses

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62 because 90 minus 15, minus 13, is equal to 62

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Luke order an extra large square pizza for all of his friends. The area of the pizza was 289cm². what is the perimeter of crust

AlekseyPX

Answer:

68 cm

Step-by-step explanation:

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Greg has decreased his running time by 1/10 minute each of the last six weeks. Write an expression to represent the total change

Nastasia [14]

x is your starting running time. 1/10 of a minute is 6 seconds, so you can do x - 6(6). 6 times 6 = 36, so your answer is x - 36 seconds. 36 seconds.

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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 $ft^2$ .

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2 years ago

zimovet [89]

Answer:

Linear

Step-by-step explanation:

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2 years ago