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REY [17]
3 years ago
15

2/3(-7)+2/3(-5) solve using the distributive property

Mathematics
1 answer:
Anna71 [15]3 years ago
7 0

Answer:

-8

Step-by-step explanation:

2/3(-7)+2/3(-5) = -8

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Find the two numbers that have a sum of 49 and a difference of 1/2
NeX [460]

Answer:

49.5 , -0.5

Step-by-step explanation:

a  + b =49\\a -  b = 0.5\\a= 49.5\\b= -0.5

6 0
2 years ago
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18 ÷ -3 - -12 x -1 x -11 (the x is times, please solve)
Elena L [17]
126
Explanation
18/-3-(-12)•(-1)•(-11)
divide 18 by -3 and change signs on the 12
(-6)+12•(-1)•(-11)
multiply 12 and -1
(-6)+(-12)•(-11) then multiply -11 and -12
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5 0
2 years ago
Solve the system by graphing. Y=2x-9 y=-2x-1
sattari [20]

Answer:

(2,-5)

Step-by-step explanation:

See attachment

One can also solve this by calculation:

y=2x-9

y=-2x-1

-

Rearrange either equation to find x.  I'll use the first:

y=2x-9

2x = y+9

x = (y+9)/2

Now use this value of x in the second equation:

y =  -2x-1

y =-2((y+9)/2)-1

y = (-2y-18)/2)-1

y = -y -9 - 1

2y = -10

y = -5

Now use -5 for y in the rearranged equation:

y =  -2x-1

-5 =  -2x-1

-2x = -4

x = 2

Solution is (2,-5)

But the question wants a graph solution, which is also fun when you use DESMOS.

4 0
2 years ago
Bob and rob in ratio 3:4 and their age 4 years ago was 5:7 find their ages
Trava [24]

Answer:

Present Day:

Bob:Rob:Difference

 3   :  4  :        1

 6   : 12  :       2

4 years ago:

Bob:Rob:Difference

    5 : 7 : 2

6 0
2 years ago
Find the area <br> Plz help
Katena32 [7]

To calculate the area of a triangle, multiply the base and the height, then divide the product by 2.

7*8=56

56/2=28

Area=28 feet squared

5 0
2 years ago
Read 2 more answers
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