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3 years ago

20 points!!! Solve Each Proportion-Round to the nearest tenth * Your answer

Mathematics

1 answer:

KatRina [158]3 years ago

8 0

Answer:

x = 3.6

B. {7.88}

Step-by-step explanation:

$\frac{6}{x}= \frac{10}{6}$

x · 10 = 6 · 6

10x = 36

10x ÷ 10 = 36 ÷ 10

x = 3.6

$\frac{9}{8} =\frac{x}{7}$

8 · x = 9 · 7

8x = 63

8x ÷ 8 = 63 ÷ 8

$x=7\frac{7}{8}$ or x = 7.875

7.875 rounded to the nearest tenth is 7.88.

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Find the area of an equilateral triangle with a side of 10cm

r-ruslan [8.4K]

Answer:

Since it is an equilateral triangle, all sides are 10cm

Step-by-step explanation:

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3 years ago

find the curved surface area and total surface area of a right circular cylinder whose height is 15 cm and the radius of the bas

otez555 [7]

Answer:

$CSA = 660cm^2$ --- Curved Surface Area

$TSA = 968cm^2$ --- Total Surface Area

Step-by-step explanation:

Given

Shape: Cylinder

$h = 15$ -- height

$r = 7$ --- radius

Solving (a): The curved surface area (CSA)

This is calculated as:

$CSA = 2\pi rh$

This gives:

$CSA = 2 * \frac{22}{7} * 7 * 15$

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Solving (b): The total surface area (TSA)

This is calculated as:

$TSA = 2\pi r(h + r)$

This gives:

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6 0

3 years ago

Given the arithmetic sequence an=4-4(n-1), what is the domain for n?

m_a_m_a [10]

The domain for n is $-\infty$

Explanation:

The arithmetic sequence is

To determine the domain of the sequence, let us consider $a_n$ as $f(n)$

Thus, the sequence becomes, $f(n)=4-4(n-1)$

The domain of the function is the set of all x-values for which the function is real and well defined.

Since, the function has no domain constraints or undefined points. Therefore, the domain of the function is

Thus, the domain of the arithmetic sequence $a_n=4-4(n-1)$ is $-\infty$

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4 years ago

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4 years ago