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arsen [322]
3 years ago
15

What is the opposite of -7

Mathematics
2 answers:
strojnjashka [21]3 years ago
4 0
THE OPPOSITE of -7 would be 7. -7 is a negative, and the opposite of a negative is a positive, and so the opposite of -7 would be 7 (which is positive 7.)
Brums [2.3K]3 years ago
3 0
The opposite of -7 is 7. 
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Ktoś mi to rozwiarze pls
WARRIOR [948]

a)

2a+(3a-7)=2a+3a-7=5a-7

b)

(2x-3)+x=2x-3+x=3x-3

c)

7-(5x+4)=7-5x-4=3-5x

d)

3x-(y-2x)=3x-y+2x=5x-y

e)

-(3a+6)-4=-3a-6-4=-3a-10

f)

-(x-2y)-3x=-x+2y-3x=2y-4x

g)

(2p-1)+(3+5p)=2p-1+3+5p=7p+2

h)

(4-2x)-(7x-2)=4-2x-7x+2=6-9x

i)

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

j)

(2m+4n)+(m-0,5n)=2m+4n+m-0,5n=3m+3,5n

k)

(4a-7b)-(2a+3b)=4a-7b-2a-3b=2a-10b

l)

-(2p-r)-(2r-p)=-2p+r-2r+p=-p-r

3 0
3 years ago
when was the balloon at 250 ft ? make sure you describe all times when the balloon was at this height.
Alexxx [7]

Answer: A. You need two functions, one for each balloon:

Let h be height, in ft.

Let t be time, in min.

Balloon 1:

h1 = 250 (starting height) + 110t (rate that height is increasing)

Step-by-step explanation:

7 0
3 years ago
40 point question ....... pls urgent
olganol [36]

The area swept by the minute hand in 12 minutes is 181.58 cm²

Step-by-step explanation:

In the circle clock

  • The circumference of the circle is divided into 12 equal arcs
  • The central angle of each arc is 30°, because the measure of the circle is 360° and divided by 12
  • The central angle between each two consecutive hours is 30°
  • There are 5 minutes between each two consecutive hours, then the central angle between each two consecutive minutes is 6° because 30° ÷ 5 = 6°
  • When the minute hand is moved than the radius of the circle is the length of the minute hand
  • When the hour hand is moved than the radius of the circle is the length of the hour hand

∵ The minute hand is swept by 12 minutes

∵ The central angle between each two consecutive minutes = 6°

∴ The central angle when the minute hand swept 12 minutes =

   6 × 12 = 72°

∵ The area of a sector of a circle = \frac{x}{360}*\pi r^{2} ,

   where r is the radius of the circle and x is the central angle of

   the sector

∵ The radius of the circle is the length of the minute hand

∵ The minute hand in a clock is 17 cm long

∴ r = 17 cm

∵ The measure of the central angle is 72°

∴ x = 72°

- Substitute these values in the rule of the area of a sector

∵ Area = \frac{72}{360}*\pi (17)^{2}

∴ Area = 181.58 cm²

The area swept by the minute hand in 12 minutes is 181.58 cm²

Learn more:

You can learn more about the area of the sector in brainly.com/question/3456442

#LearnwithBrainly

3 0
3 years ago
Which linear inequality is represented by the graph?
Vesnalui [34]

Answer:

B

Step-by-step explanation:

6 0
3 years ago
Solve 10 3/4 - 6 4/5
MAXImum [283]
Alright, so the first thing I would do is find the LCM of the dividends, which is 20.  So we have 10 15/20 and 6 16/20.  You can either leave it there and just carry the one (20 in this case) for 3 19/20.
If you multiply 10 by 20 and add 15, or 6 by 20 and add 16 (which I think is easier) you get 215/20 - 136/20 = 79/20.  It can be simplified from here if you teacher wants it in the future.
7 0
3 years ago
Read 2 more answers
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