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Lady_Fox [76]
3 years ago
8

Noah is solving an equation, and one of his moves is unacceptable. Here are the moves he made.

Mathematics
1 answer:
faust18 [17]3 years ago
3 0

Answer:

b. When you divide both sides by 2x = 6x it could lead us to think that there is no solution while, in fact, the solution is x = 0.

Step-by-step explanation:

The solution is correct up to the step 2x = 6x

2x = 6x

Subtract 2x from both sides.

0 = 4x

Divide both sides by 4.

x = 0

You cannot divide both sides by x since x could be zero, and in fact, it is.

Answer: b. When you divide both sides by 2x = 6x it could lead us to think that there is no solution while, in fact, the solution is x = 0.

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Two supplementary angles have measurements of (3x)° and (10x – 15)°. What are the measures of the
Oxana [17]

Sorry for the way it came out but the Answer:

2

x

+

5

=

43

∘

3

x

−

10

=

47

∘

Explanation:

A complementary angles means angles that add up to

90

degrees. The two angles given in the question are complementary angles.

So

Our first angle

(

2

x

+

5

)

plus the second angle

(

3

x

−

10

)

is equal to

90

degrees

(

2

x

+

5

)

+

(

3

x

−

10

)

=

90

Now we solve for

x

, first we add up the like terms

2

x

+

3

x

+

5

−

10

=

90

5

x

−

5

=

90

Add

5

to both sides

5

x

=

95

Divide both sides by

5

we get

x

=

19

Now and after we find

x

we substitute it to get our two angles

2

x

+

5

=

2

(

19

)

+

5

=

43

∘

3

x

−

10

=

3

(

19

)

−

10

=

47

∘

Hope it helps :)

Step-by-step explanation:

3 0
4 years ago
How many solutions does this system have?
vagabundo [1.1K]

Answer:

d

Step-by-step explanation:

it has the same slope but not the same y-int

5 0
3 years ago
Find all n in N that satisfy (2^n)-1 divisible by 9​
zmey [24]

Answer:

u can use the hit and trial method for this

7 0
3 years ago
The graph of a polynomial is shown below. Between which two x-values does this polynomial have an extreme value?
stiv31 [10]

Answer:

C.-3 to -2

Step-by-step explanation:

From the picture attached, it can be seen that an extreme value, that is, a maximum of the polynomial is found between x = -3 and x = -2. In this extreme point, the polynomial has an approximate value of 4.5

7 0
3 years ago
What is the value of the expression (9+15)/3+2?
KIM [24]
(9+15)/3+2
24/3+2
8+2
10
6 0
3 years ago
Read 2 more answers
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