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3 years ago

How to solve 15=x-3 ;_;

2 answers:

5 0

The top answer is right, it’s 18.
15=x-3
you’d add 3 to 3 to get rid of it (because it’s -3) and add it to also 15. 15+3= 18 so x=18
15=18-3

Vitek1552 [10]3 years ago

3 0

X= 18

So that you can help yourself better use Math-way!!

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Which is equivalent to RootIndex 4 StartRoot 9 EndRoot Superscript one-half x?

nata0808 [166]

Answer:

${9}^ {\frac{1}{8}x}$

Step-by-step explanation:

We want to find an equivalent expression for

$(\sqrt[4]{9})^{ \frac{1}{2}x}$

To find an equivalent expression, we need to apply the following property of exponents:

${a}^{ \frac{m}{n}}=( \sqrt[n]{ {a}} )^{m}$

We let a=9, n=4 and m=½x

Then :

${9}^{ \frac{ \frac{1}{2}x}{4}}=( \sqrt[4]{ {9}} )^{ \frac{1}{2}x}$

Simplify the left hand side to get:

${9}^ {\frac{1}{8}x} =( \sqrt[4]{ {9}} )^{ \frac{1}{2}x}$

Therefore the correct answer is:

${9}^ {\frac{1}{8}x}$

8 0

3 years ago

Factor: 4x^2-12x+9=0

Andreas93 [3]

Use formula $a^2-2ab+b^2=(a-b)^2$

$4x^2-12x+9
\\(2x)^2-2(2x)(3)+3^2
\\(2x-3)^2$

6 0

3 years ago

Read 2 more answers

Find the missing side. round to the nearest tenth

barxatty [35]

So you would use the law of sines so set up the equation sin18/16 = sin72/x (sin 72 being the top angle) and then you cross multiply and solve from there:)
Hope this helps!

3 0

3 years ago

Read 2 more answers

Can u plzz find me a length of adjacent

timofeeve [1]

Answer:

There is no answer

My Logic:

The picture does not specify the degree of angle for each corner, nor can i understand what the random "a" is. also the side all the way to the left has an un-readable number.

6 0

3 years ago

3x - 2y = 13 x + 4y = 14

AleksandrR [38]

Answer:

10x +6y - 14

Step-by-step explanation:

3x - 2y = 13x + 4y = 14

3x = 13x + 6y = 14

-10x = 6y = 14

10x + 6y - 14

6 0

3 years ago