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N76 [4]
3 years ago
7

If f(x)=square root of 1/2x -10+3 which inequality can be used to find the domain of f(x)?

Mathematics
2 answers:
zlopas [31]3 years ago
7 0
Hello :
f(x) = <span>√(0.5x-10) +3

</span>inequality can be used to find the domain of f(x) is :  0.5x-10 <span>≥ 0  
</span>0.5x ≥10
x ≥10/0.5
x ≥ 20

the domain of f(x) is :  D = <span>[</span><span>20 ; + ∞[ </span>
Rina8888 [55]3 years ago
6 0

1/2x-10>0 is the correct answer

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Minchanka [31]

Answer: x=-1

Step-by-step explanation:

By the negative exponent rule, you have that:

(\frac{1}{a})^n=a^{-n}

By the exponents properties, you know that:

(m^n)^l=m^{(nl)}

Therefore, you can rewrite the left side of the equation has following:

(\frac{1}{8})^{-(2x+7)}=(\frac{1}{32})^{3x}

 Descompose 32 and 8 into its prime factors:

32=2*2*2*2*2=2^5\\8=2*2*2=2^3

Rewrite:

(\frac{1}{2^3})^{-(2x+7)}=(\frac{1}{2^5})^{3x}

Then:

(\frac{1}{2})^{-3(2x+7)}=(\frac{1}{2})^{5(3x)}

As the base are equal, then:

-3(2x+7)=5(3x)

Solve for x:

-6x-21=15x\\-21=15x+6x\\-21=21x\\x=-1

8 0
3 years ago
Please help!!!!! geometry
m_a_m_a [10]

Answer:

58

Step-by-step explanation:

First, draw out your triangle on a piece of paper, and label each point w, x, and y

We are then told that side wx and yw are similar. This means that we have an isosceles triangle with two similar sides.

We are also told that angle w is equal to 64 degrees

with this information, we can assume that angle y is the same as angle x

Another important thing to note is that all triangle measures equals to 180

SO

we can make this expression:

64 + x + x = 180

Now to solve for x:

64 + x + x = 180

64 + 2x = 180

2x = 116

x = 58

3 0
1 year ago
17.Which of the following is the equation of a line parallel to y-axis?
AlexFokin [52]

Answer:

I think that the answer is a

7 0
2 years ago
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Artemon [7]

Answer:

so yea what was the answer again

Step-by-step explanation:

6 0
3 years ago
Please help for number 68!!
kiruha [24]

Answer:

the answer would be F 1 mile.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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