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3 years ago

Algebra Toles help pt 2!

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

4 0

Answer:

As per picture the number of tiles is (just count them):

x² ⇒ 1 tile
x ⇒ 4 + 4 = 8 tiles
Unit ⇒ 4*4 = 16 tiles

This represents:

x² + 8x + 16 = (x + 4)² - the square with the side of (x + 4)

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A hole needs to be at least 40 feet below ground level. This means it needs to be more than 2 times its current depth.

Alex Ar [27]

The current depth of the hole is at least 20 feet below ground level.

Inequality is an expression that shows the non equal comparison of numbers and variables.

Let d represent the current depth of the hole.

To be at least 40 feet below ground level, he need more than 2 times its current depth.

2d < -40

d < -20

Hence the current depth of the hole is at least 20 feet below ground level.

Find out more on inequalities at: brainly.com/question/11613554

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3 years ago

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Unit rate for typing 34 words in a minute in a half

katrin [286]

Answer:

Rate is 1.1333 words per second 

Step-by-step explanation:

We understand rating as frequency or speed of doing something per time (seconds mainly)

${ \green{ \tt{rate = \frac{item \: quantity}{time} }}} \\$

Let's find rate in terms of seconds (words per second)

${ \rm{rate = \frac{34 \: words}{ (\frac{1}{2} \times 60) \: seconds} }} \\ \\ { \rm{rate = \frac{34}{30} }} \\ \\ { \rm{rate = 1.133 \: \: words \: per \: second}}$

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2 years ago

An engineering scale model shows a church that is 2 inches tall. if the scale is 1 inch = 256 feet, how tall is the actual churc

SVETLANKA909090 [29]

Answer:

Actual height of church = 512 feet

Step-by-step explanation:

Given:

Scale model;

1 inch = 256 feet

Height of church (Scale model) = 2 inches

Find:

Actual height of church

Computation:

Actual height of church = Height of church (Scale model) x scale length

Actual height of church = 2 inches x 256 feet/inches

Actual height of church = 2 x 256 feet

Actual height of church = 512 feet

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3 years ago

Three-sevenths of a number is 21. Find the number.

miskamm [114]

Answer:

Step-by-step explanation:

The number is 49, First do 21 / 3 to find what 1/7 of the number is. We get 7, so we know 1/7 is 7 so if we do 7 x 7 we will have 7/7 or one whole and 7x7 is 49. Hope this helps

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3 years ago

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Evaluate log416 -2 1/2 2

krok68 [10]

16 = 4²

So, by the definition of logarithms

$\log_4{16}=2$

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4 years ago