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2 years ago

Which algebraic expression represents “the class was divided into four equal groups”?

1 answer:

4 0

The last answer, because the class is being divided into four groups. So the class number is not known, thus it is represented by “w” and divided by four.

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What is the missing length??

amid [387]

Answer

The missing length is 10

Step-by-step explanation:

Represent the missing length with x

The sides of the given shape are directly proportional.

Mathematically:

(15 + x) to (12 + 8) and x to 7

Represent as a ratio:

$(15 + x) : (12 + 8) = x : 8$

$15 + x : 20= x : 8$

Convert to fraction

$\frac{15 + x}{20} = \frac{x}{8}$

Cross Multiply:

$(15 + x)*8 = 20 * x$

$120 + 8x = 20x$

Collect Like Terms

$20x - 8x = 120$

$12x = 120$

Solve for x

$x = \frac{120}{10}$

$x = 10$

<em>The length of the missing side is 10</em>

4 0

3 years ago

Koji is installing a rectangular window in an office building. The window is 8/2/3 feet wide and 5/3/4 feet high. The formula fo

777dan777 [17]

A=BH
SO A= (8/2*3)(5/3*4)ft^2= 80 ft^2 is the answer.

3 0

3 years ago

An athletic field is a 48 yd-by-96 yd rectangle, with a semicircle at each of the short sides. A running track 20 yd wide surr

MA_775_DIABLO [31]

The distance would be equal to 2 times the longest side of the rectangle plus twice the shortest side multiplied by pi / 2 for the semicircle, that is:

longest side 96 and shortest 48

D = 2 * (96) + 2 * (1/2) * pi * 48

D = 192 + pi * 48

This shorter side, which starts at 48, will expand each time by two more in proportion to 20 of the running track between 8 than the number of divisions, that is, 2 * (20/8) = 5

In other words, there are 8 distances, like this:

D1 = 192 + 3.14 * 48 = 342.72 yd

D2 = 192 + 3.14 * (48 + 5) = 358.42 yd

D3 = 192 + 3.14 * (48 + 10) = 374.12 yd

D4 = 192 + 3.14 * (48 + 15) = 389.82 yd

D5 = 192 + 3.14 * (48 + 20) = 405.52 yd

D6 = 192 + 3.14 * (48 + 25) = 421.22 yd

D7 = 192 + 3.14 * (48 + 30) = 436.92 yd

D8 = 192 + 3.14 * (48 + 35) = 452.62 yd

6 0

3 years ago

Does anyone know the answer?

meriva

Answer:

2/6

Step-by-step explanation:

there is only two fives with two dice, the dice only have six sides therefore the chances would be two out of five

6 0

3 years ago

2 + 1 . 2 5 f = 1 0 − 2 . 7 5 f

Rom4ik [11]

2+1.25f=10-2.75f Add the variables

2+4f=10 isolate the variable

4f=8

f=2

7 0

2 years ago