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valina [46]
3 years ago
10

Please help with numbers 5, 6, 7, and 8 (Will give brainliest)

Mathematics
1 answer:
Harrizon [31]3 years ago
4 0

Answer:

#5

  • If AB = BC, then BC = AB
  • Symmetric property of equality

#6

  • ∠A = ∠A
  • Reflexive property of equality

#7

  • If 2x - 5 + 3x = 10 ⇒ add up 2x and 3x ⇒ then 5x - 5 = 10
  • Associative property of addition

#8

  • If B is the midpoint of AC, then AB = BC
  • Definition of midpoint
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#1. Which is equal to z3 8? A. (z - 2)(z^2 - 2z - 4). B. (z + 2)(z^2 - 2z + 4) C.(z - 2)(z^2+ 2z + 4). D. (z + 2)(z^2+ 2z - 4) #
tankabanditka [31]
#1. B
<span>(z * z^2 + z * 2z + z * 4) – (-2 *z^2 – (-2) 2z – (-2) 4)
Z^3 + 2z^2 + 4z – 2z^2 -4z – 8
Z^3 + 2z^2 – 2z^2 + 4z – 4z – 8
Z^3 - 8
</span>
#2 and #3. D
<span>(x + y)(x + 2)
x^2 + 2x + yx + 2y
</span>
#4. D.
<span>(x - 7)(x + 7)(x- 2)
x^2 + 7x – 7x -49
x^2 + x – 49
x^2 -49
(x^2 – 49 ) (x – 2)
x^3 – 2x^2 – 49x + 98
</span>
#5. C
(y - 4) = 0
y = 4
(x + 3)= 0
x = -3

#6. A and B
3 0
3 years ago
50-(16 divide 2^2)+3
IRINA_888 [86]

Answer: 49

Step-by-step explanation:

50−16/4+3

=50−4+3

=46+3

=49

8 0
3 years ago
If it takes 33
vivado [14]

Answer:

3.3 LBS

Step-by-step explanation:

33 pounds for 10 cups

33/10

3.3

7 0
2 years ago
Solve the equation by completing the square m^2+6m-77=-5
Grace [21]
Maybe you thought about this:
m^2+6m-77+5=0 => m^2+6m-72=0 => m^2+ 2*3*m+3^2-3^2-72=0
=> m^2+2*3*x+3^2= (m+3)^2 this is the complete square of the binomial, we will still keep it =>
(m+3)^2 -9 -72=0 => (m+3)^2 - 81 = 0 => (m+3)^2 - 9^2 = 0
Now we got the difference squares, it mean a^2 - b^2 = (a-b) (a+b)
In according to this => (m+3-9) (m+3+9) = 0 =>
(m-6) (m+12)=0 => m-6=0 or m+12=0 => m1=6 or m2= -12 !!!!
Are you satisfied with this solution?

6 0
3 years ago
this is a mth thing think of a number add 3 add 7 subtract the number you first thought off minus one your number is 9 if im rig
natali 33 [55]
Yep
Spot on
I got 9
So yep
3 0
3 years ago
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