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Alekssandra [29.7K]
3 years ago
13

Answer please and thank you

Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
6 0

Answer:

b

a=1

Step-by-step explanation:

suter [353]3 years ago
4 0
The answer is B. a=1
14a + 21 = 49 - 14a
28a + 21 = 49
28a = 28
a = 1
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Simplify 18-2[x + (x - 5)].<br> O8-4x<br> 28 - 4x<br> 28 - 2x
densk [106]

Answer:

28-4x

Step-by-step explanation:

Step 1: Open most inner bracket and simplify

=18-2(x+x-5)

=18-2(2x-5)

Step 2: Expand brackets by multiplying 2 in and simplify

=18-2(2x)-2(-5)

=18-4x+10

=28-4x

Therefore the answer is 28-4x

3 0
3 years ago
Perform the following operation
Cerrena [4.2K]

Answer:

When you multiply an odd number of negatives you get a negative result. When you multiply an even number of negatives you get a positive result.

First, multiply normally.

25x10x5

1100

Then determine whether the sign is positive or negative. Since there is an odd number of negatives, the sign is negative.

So, the answer is -1100.

:)

7 0
3 years ago
Solve for x: 5x+2-10x=22
sasho [114]

Answer:

X=-4

Step-by-step explanation:

5x-10x=22-2

-5x=20

x=-4

7 0
3 years ago
Plz answer this and explain how
Dahasolnce [82]

Answer:

Option H, π/3 and 2π/3

Step-by-step explanation:

sin x = sqrt(3) / 2

<em>It happens at 60 degrees and 120 degrees.  In radians, it is π/3 and 2π/3</em>

<em />

Answer:  Option H, π/3 and 2π/3

8 0
3 years ago
A(n) ______ is a letter or symbol that represents some unknown value.
coldgirl [10]
B.
hope this helps you
4 0
3 years ago
Read 2 more answers
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