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Oksanka [162]
3 years ago
10

Can someone answer this -2(-x-1)-(x+1

Mathematics
1 answer:
Grace [21]3 years ago
6 0

Answer:

x+1

Step-by-step explanation:

1.) -2(-x-1)-(x+1)

2.) -2(-x-1) = 2x+2

3.) 2x+2-(x+1)

4.) -(x+1) = -x-1

5.) 2x+2-x-1 = x+1

ANSWER: x+1

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A high school had 2,300 students in 2010 which increased by 33% in the following four years. How many students are there in 2014
mr Goodwill [35]
Students in 2014 = (100% + 33%) × 2,300
students in 2014 = 133% × 2,300
students in 2014 = 133/100 × 2,300
students in 2014 = 3,059

There are 3,059 students in 2014
4 0
3 years ago
How to convert 70 metres to killometres
deff fn [24]

Answer:

from meters to kilometres  divivde 1000 so 70 divide 0.07 kilometres

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Electrical resistance ina wire is directly proportional to its length and inversely proportional to the square of its diameter.
LenaWriter [7]
Initial Conditions:

length=L= 10 cm = (10*10⁻²)m
Diameter=D= 2 cm= (2*10⁻²)m
Radius= r= 0.01m
Area=A= π*r²/2 =1.57*10⁻⁴ m²

Resistance=R= 600 ohm
 
So, from initial conditions we find resistivity(р)
                                       R=рL/A
                                       R*A /L=р
                                      (600)*(1.57*10⁻⁴)/(10*10⁻²)=р
                                       р=0.942 Ω m
<span>As, material remains same so resistivity(p) doesn't change

 </span>Lenght= L1= 15 fm= 15*10⁻¹⁵ m
Diameter= D1 = 5 cm= 5*10⁻² m
Radius= r= 0.025 m
Area= A1= π*r²/2 =9.8125*10⁻⁴ m²
                                               R=р*L1/A1
                                               R=(0.942 )*(15*10⁻¹⁵ )/(9.8125*10⁻⁴)
                                               R=1.44*10⁻¹¹ Ω
3 0
3 years ago
5×-3(4×-8)=-11 helppppppp
Damm [24]

5x - 3(4x-8) = -11

5x - 12x  + 24 = -11

-7x + 24 = -11

-7x = - 35

  x = 5

4 0
3 years ago
DeAngelo is training for a half marathon. Today he is running 13.25 miles. He jogs for the first half hour at a rate of 5.5 mile
Nezavi [6.7K]
For this case, the first thing we must do is define a variable.
 We have then:
 p: rate in miles per hour for the last 1.5 hours
 We now write the equation that models the problem.
 We have then:
 (0.5) * (5.5) + 1.5p = 13.25&#10;
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 2.75 + 1.5p = 13.25&#10;
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 Answer:
 
DeAngelo's rate for the last 1.5 hours of his run is 7 miles per hour.
5 0
3 years ago
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