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Julli [10]
3 years ago
12

Will mark brainliest 2+2-1=x

Mathematics
2 answers:
erik [133]3 years ago
7 0

Answer:

2+2 is 4 minus 1 is 3 quick math

Step-by-step explanation:

x=3

statuscvo [17]3 years ago
3 0

Answer:

3

Step-by-step explanation:

2+2 is 4-1 that’s 3 quick math

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5 0
3 years ago
Avery can run at 10 uph. The bank of a river is represented by the line 4x + 3y = 12, and Avery is at (7, 5). How much time does
Reil [10]
The minimum distance will be along a perpendicular line to the river that passes through the point (7,5)

4x+3y=12

3y=-4x+12

y=-4x/3+12/3

So a line perpendicular to the bank will be:

y=3x/4+b, and we need it to pass through (7,5) so

5=3(7)/4+b

5=21/4+b

20/4-21/4=b

-1/4=b so the perpendicular line is:

y=3x/4-1/4

So now we want to know the point where this perpendicular line meets with the river bank.  When it does y=y so we can say:

(3x-1)/4=(-4x+12)/3  cross multiply

3(3x-1)=4(-4x+12)

9x-3=-16x+48

25x=51

x=51/25

x=2.04

y=(3x-1)/4

y=(3*2.04-1)/4

y=1.28

So now that we know the point on the river that is closest to Avery we can calculate his distance from that point...

d^2=(x2-x1)^2+(y2-y1)^2

d^2=(7-2.04)^2+(5-1.28)^2

d^2=38.44

d=√38.44

d=6.2 units

Since he can run at 10 uph...

t=d/v

t=6.2/10

t=0.62 hours  (37 min 12 sec)

So it will take him 0.62 hours or 37 minutes and 12 seconds for him to reach the river.




8 0
3 years ago
11 more than a number q is negative 15 ; Solve for the variable.
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Answer:

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Step-by-step explanation:

Set up an equation where q is the unknown number:

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q + 11 = -15

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2 years ago
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uysha [10]

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6 0
3 years ago
WHOEVER ANSWERS CORRECT AND FAST WILL GET BRAINLIEST
amid [387]

Answer:

b

Step-by-step explanation:

5 0
3 years ago
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