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iris [78.8K]
3 years ago
7

PLZ HELP I GIVE BRAINLIEST... 2-(-4)=? -5-(10)=?

Mathematics
2 answers:
disa [49]3 years ago
5 0

2 -(-4) = 2 + 4 = 6

-5-(10) = -5 - 10 = -15

I hope it helps you

Vesnalui [34]3 years ago
3 0

Answer:

6 and -15

Step-by-step explanation:

hope this helps

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Consider this equation: {x-9 - 2x+2 = 1 Which is an equivalent equation after combining like terms? 8 X-11=1 3 -= -4 X-71 3 8 -7
grandymaker [24]

Answer:

  • B. -4/3x - 7 = 1

Step-by-step explanation:

  • 2/3x - 9 - 2x + 2 = 1
  • 2/3x - 2x - 7 = 1
  • 2/3x - 6/3x - 7 = 1
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Correct option is B

8 0
3 years ago
3/5 × 6/7 help please
zepelin [54]
Multiply the numerator by the numerator (top number). 
Multiply the denominator by the denominator (bottom number). 

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Can someone help me understand how to solve a two variable equation I am really lost
Llana [10]
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So first we rearrange the first equation
X  = a - Y 
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since we know X = a-Y, 
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7 0
3 years ago
Tentukan persamaan garis yang di wakili ruas garis AB,BC,CD dan AD! <br>tolong kak
Ann [662]

Answers:

1. AB: y = - 2x - 6

2. BC: y = x - 3

3. CD: x = 3

4. AD: y = (3/7) x +26/7


Solution:

y-y1=m(x-x1)

m=(y2-y1)/(x2-x1)


1. AB

A=(-4,2)=(xa, ya)→xa=-4, ya=2

B=(-1,-4)=(xb, yb)→xb=-1, yb=-4

mab=(yb-ya)/(xb-xa)

mab=(-4-2)/(-1-(-4))

mab=(-6)/(-1+4)

mab=(-6)/(3)

mab=-2

y-ya=mab (x-xa)

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

y-2=-2(x+4)

y-2=-2x-8

y-2+2=-2x-8+2

y=-2x-6


2. BC

B=(-1,-4)=(xb, yb)→xb=-1, yb=-4

C=(3,0)=(xc, yc)→xc=3, yc=0

mbc=(yc-yb)/(xc-xb)

mbc=(0-(-4))/(3-(-1))

mbc=(0+4)/(3+1)

mbc=(4)/(4)

mbc=1

y-yc=mbc (x-xc)

y-0=1 (x-3)

y=x-3


3. CD

C=(3,0)=(xc, yc)→xc=3, yc=0

D=(3,5)=(xd, yd)→xd=3, yd=5

mcd=(yd-yc)/(xd-xc)

mcd=(-4-0)/(3-3)

mcd=(-4)/(0)

mcd= Infinite (Vertical line)

Equation vertical line: x=xc=xd

x=3


4. AD

A=(-4,2)=(xa, ya)→xa=-4, ya=2

D=(3,5)=(xd, yd)→xd=3, yd=5

mad=(yd-ya)/(xd-xa)

mad=(5-2)/(3-(-4))

mad=(3)/(3+4)

mad=3/7

y-ya=mad (x-xa)

y-2=(3/7)(x-(-4))

y-2=(3/7)(x+4)

y-2=(3/7)x+12/7

y-2+2=(3/7)x+12/7+2

y=(3/7)x+(12+7(2))/7

y=(3/7)x+(12+14)/7

y=(3/7)x+26/7


8 0
3 years ago
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