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Elina [12.6K]
3 years ago
10

2x + 10 = 3 (x + 4) -x

Mathematics
2 answers:
gulaghasi [49]3 years ago
7 0
<span>2x + 10 = 3 (x + 4) -x
Multiply the number outside the parenthesis with the numbers/variables inside the parenthesis
2x + 10 = 3x + 12 - x
Subtract 10 from both sides
2x = 3x + 2 - x
Add x to both sides
3x = 3x +2
Subtract 3x from both sides
Final Answer: x=2

</span>
yarga [219]3 years ago
5 0
2x+10= 3x+12-x
10-12=3x-x-2x
2= x
x=2
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3 years ago
Why is 186,426 divisible by 3 and 9
Zepler [3.9K]
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7 0
3 years ago
The length of a rectangle is five more than the width. The perimeter is 130cm. What is the area?
Evgen [1.6K]
<h2>Greetings!</h2>

Answer:

≅ 586.8

Step-by-step explanation:

Take x to be the width, if the length is 5x bigger than the width, then this can be shown by 5x.

The total perimeter is:

(2 * x) + (2 * 5x) because each side has another parallel one.

This means that 2x + 10x = 130

12x = 130

Divide both sides by 12:

\frac{12x}{12} = \frac{130}{12}

x = \frac{65}{6}

So the area = length * width

x * 5x = area

Substitute the values in:

\frac{65}{6} * (5*\frac{65}{6}) = 586.8055... ≅ 586.8

So the approximate area is 586.8


<h2>Hope this helps!</h2>
5 0
3 years ago
Use Euler's formula to write 3+3i^3 in exponential form.
Alex_Xolod [135]

21−=2(2−)=2cos(−1)+2 sin(−1)

−1+2=−1(2)=−1(cos2+sin2)=cos2+ sin2

Is the above the correct way to write 21− and −1+2 in the form +? I wasn't sure if I could change Euler's formula to =cos()+sin(), where is a constant.

complex-numbers

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edited Mar 6 '17 at 4:38

Richard Ambler

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asked Mar 6 '17 at 3:34

14wml

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Add a comment

1 Answer

1

No. It is not true that =cos()+sin(). Notice that

1=1≠cos()+sin(),

for example consider this at =0.

As a hint for figuring this out, notice that

+=ln(+)

then recall your rules for logarithms to get this to the form (+)ln().

8 0
3 years ago
Can u please help I need the answer to this equation
snow_lady [41]

Answer:

17°

Step-by-step explanation:

ΔXWZ = ΔYWZ  (they are congruent triangles so ∠XWZ = ∠YWZ)

5x - 8 = 9x - 28

Rearrange and collect the like terms

-8 + 28 = 9x - 5x

20 = 4x

x = 5°

∠YWZ = 9x - 28

sub x = 5

= 45 - 28

= 17°

7 0
3 years ago
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