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Mice21 [21]
2 years ago
14

Simplify for a = 3, b = -4 and c = -1. 2a(b−c)

Mathematics
1 answer:
jok3333 [9.3K]2 years ago
5 0

Answer:

your answer would be -18

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According to Descartes rule what is a possible number of positive and negative roots
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sepalacola

Step-by-step explanation:

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2 years ago
Mike traveled to Greensboro by car. Going there took 6 hours, and the return trip was four hours. Mike averaged a speed of 81 mi
Marat540 [252]

Answer: 64.8 mph

Step-by-step explanation:

Given

Arriving time is 6 hours

return time is 4 hours

The average speed of returning 81 mph

Distance traveled while returning

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the average speed of the entire trip is

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2 years ago
Please hurry attachment below will Brainly if answer correctly 30 POINTS
Rzqust [24]
Put everything into a calculator to change to decimal form to make things easier:
27/5=5.4
5.36=5.36
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33/6=5.5
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6 0
2 years ago
Can someone please give me the (Answers) to this? ... please ...
Lady bird [3.3K]

Answer:

1a) Obtuse

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1c) x = 101 degrees

2a) Obtuse

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Step-by-step explanation:

I hoped these helped. If possible, may I have brainliest :)

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2 years ago
I can't seem to figure out number 13, with the star. I just don't know! Help is very appreciated ☺️
katrin2010 [14]
Given:
Scale of the map 1 1/4cm : 8 yards
Rectangular Park:  width : 2 1/2 cm ; length : 6 1/4 cm
Circular Pond: pi = 3.14 ; diameter 1 1/4 cm

Convert mixed factions into fractions.
Scale 1 1/4 = (4*1+1)/4 = 5/4
Width: 2 1/2 = (2*2+1)/2 = 5/2
Length: 6 1/4 = (4*6+1)/4 = 25/4
Diameter: 1 1/4 = (4*1+1)/4 = 5/4

width / scale * 8 yds = width in yards
5/2 ÷ 5/4 = 5/2 * 4/5 = 20/10 = 2 * 8 yds = 16 yds
length / scale * 8 yds = length in yards
25/4 ÷ 5/4 = 25/4 * 4/5 = 100/20 = 5 * 8 yds = 40 yds

Area of a rectangular park = l * w = 40 yds * 16 yds = 640 yds² 
 
diameter / scale * 8 yds = diameter in yards
5/4 ÷ 5/4 = 5/4 * 4/5 = 20/20 = 1 * 8 yds = 8 yds.

radius = d/2 = 8/2 = 4
Area of a circular pond = πr² = 3.14 * 4² = 3.14 * 16yds² = 50.24 yds²

5 0
2 years ago
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