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pogonyaev
3 years ago
7

Solve the equation -7 (8a - 9 = - 23 + 4a

Mathematics
1 answer:
Vikentia [17]3 years ago
3 0

Answer:

a = 43 / 30

Step-by-step explanation:

-7 ( 8a -9 ) = -23 + 4a

-56a + 63 = -23 +4a

-60a + 63 = -23

-60a = -86

a = 43 / 30

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Is 7 to the 8th power times 7 equivalent to 7 to the the third power times 7 to third power equivalent?
Akimi4 [234]

Answer:

They are not equivalent.

Step-by-step explanation:

Before we solve the question, we need to know that from the laws of indices:

A^x x A^y = A^(x+y).

7 to the power of 8th power means 7^8

7^8 times 7 means 7^8 x 7. From the laws of indices we have 7^8 x 7 = 7^9.

7 to the power of 3rd power means 7^3

7^3 times 7 to the power of 3rd power means 7^3 x 7^3. From the laws of indices we have 7^3 x 7^3 = 7^6.

Obviously, 7^9 ≠ 7^3 therefore, they are not equivalent.

8 0
3 years ago
What is the nonpermissible replacement of y-3/y+3
Alex787 [66]
Y = -3
-3 + 3 = 0
It is impossible to divide a number by 0
7 0
3 years ago
Which expression is equal to the expression below (6x9)^5
masha68 [24]

Answer:

B. You have to distribute properties. So you distribute the exponent 5 to both the 6 & the 9

4 0
2 years ago
For all x, 5-3(x-4)=
velikii [3]

Simplify

Let's simplify step-by-step.

x(5)−3(x−4)

Distribute:

=x(5)+(−3)(x)+(−3)(−4)

=5x+−3x+12

Combine Like Terms:

=5x+−3x+12

=(5x+−3x)+(12)

=2x+12

Answer:

=2x+12

8 0
3 years ago
Helpppppppppp me plz
creativ13 [48]
X+6 > -18+9x
18+6 > 8x
24 > 8x
3 > x
5 0
2 years ago
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