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2 years ago

laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.

1 answer:

3 0

Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present. Never remove chemicals or other equipment from the laboratory. Chipped or cracked glassware is okay to use. Read all procedures thoroughly before entering the laboratory.

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Can you help me find area of the shaded region?

Murljashka [212]

Answer:

Explanation:

Step One

The very first step is to show that triangles ΔABC, ΔFDC and ΔGEC are similar to one another.

1. All three triangles have a right angle in them.

ΔABC has a right angle at A
ΔFDE has a right angle at <FDE
ΔGEC has a right angle at <GEC

2. All three triangles have a common angle at C

3. All three triangles are similar by AA

Step Two

Find the ratios of the heights to one another.

AC / DC = 3/2

AB / DF = 3/2 The sides of similar triangles are in the same ratio.

Step Three

Find the area of ΔABC

Area ΔABC = 1/2 AB * AC

Area ΔABC = 81

Step Four

Find the Area of ΔDFC

Area of ΔDFC = 1/2 DF * DC

But DF and DC are known in terms of AB and AC

Area of ADC = 1/2 * 2/3 * AB * 2/3 * AC

Area of ADC = 1/2 * 4/9 * AB * AC

However 1/2 AB * AC = 81 so

Area ADC = 4/9 * 81 = 36

That's a very long complex step. Make sure you follow it through.

Step Five

Find the area of ΔGEC

By a similar process

EC = 1/3 AC

EG = 1/3 AB

Area ΔGEC = 1/2 * EC * EG

Area ΔGEC = 1/2 * 1/3 AC * 1/3 AB

Area ΔGEC = 1/2 * 1/9 * AB * AC

But 1/2 AB * AC = 81

Area ΔGEC = 1/9 * 81 = 9

Last Step

Find the area of the shaded area

ΔFDC - ΔGEC = Shaded area

36 -9 = 27 = shaded area

5 0

4 years ago

You are performing a statistical test to determine if the proportion of Americans that donate to charity is greater than .75. Yo

fiasKO [112]

Answer:

Explanation:

1334-75= A

4 0

3 years ago

A small office supply store sells paper clips in packs of 100 and packs of 250. If the store has 84 packs of paper clips in stoc

sveta [45]

Let x and y be the number of packs with 100 and 250 paper clips, respectively. The system of linear equations that would best represent the given is
x + y = 84
100x + 250y = 12,300

The values of x and y from the equations are 58 and 26, respectively. If a person buys half of the packs of 250 paper clips,
n = (0.5)(250)(26) = 3250

Thus, a person bought 3250 paper clips.

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3 years ago

How education perpetuates and reinforce social inequality

aleksandrvk [35]

<h3>Rather, they believe that the educational system reinforces and perpetuates social inequalities that arise from differences in class, gender, race, and ethnicity. ... To them, educational systems preserve the status quo and push people of lower status into obedience.</h3>

<h2>HOPE IT HELPS YOU.</h2>

<h2>PLEASE MARK ME AS BRAINLIEST.☺️☺️☺️☺️☺️✌️✌️✌️✌️✌️✌️❤️❤️❤️❤️❤️❤️</h2>

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3 years ago

Sketch the region of integration and change the order of integration 2

igomit [66]

Answer:

just logging in have no clue

7 0

2 years ago