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xeze [42]
3 years ago
8

For f(x) = 4x, find the value of x for which f(x) = 28

Mathematics
1 answer:
Darya [45]3 years ago
3 0
The answer is x=7 so it’s B
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What is the solution set of the equation?<br> <img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D%20-18%2B9x%3Dx" id="TexFormula1"
bagirrra123 [75]

9514 1404 393

Answer:

  x ∈ {2.07014981016}

Step-by-step explanation:

The equation can be rewritten as ...

  √x = 18-8x

  x = 324 -288x +64x²

  64x² -289x +324 = 0

  x = (289 ±√577)/128 ≈ {2.07015, 2.44548}

Since √x must be positive, we know that ...

  18 -8x ≥ 0

  x ≤ 18/8 = 2.25

The larger of the above solutions is extraneous, so the solution set is ...

  x ∈ {(289 -√577)/128} ≈ {2.07015}

8 0
3 years ago
A line is parallel to y=3x +8 and intersects the point (-3,7). What is the equation of this parallel line?
RoseWind [281]

Answer:

y=3x

Step-by-step explanation:

7 0
3 years ago
Plz tell me the correct answer
musickatia [10]

Answer: H

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help pls ! I’ll mark brainliest
alexandr402 [8]

Answer:

y = x + 3

Step-by-step explanation:

Y in math is usually referred as the output.

X is usually the input.

In other words,

<em>y</em><em> </em><em>is</em><em> </em><em>3</em><em> </em><em>more</em><em> </em><em>greater</em><em> </em><em>than</em><em> </em><em>x</em><em>.</em>

<em>In</em><em> </em><em>other</em><em> </em><em>words</em><em>,</em>

<em>y = x + 3</em>

5 0
3 years ago
When stating the null and alternative hypotheses, the hypotheses are: Select one: a. Always about the statistic only b. Always a
Nata [24]

Answer:

D. Always about the parameter only

Step-by-step explanation: A Null Hypothesis is a hypothesis used in statistics to show that there is no variation among the variables of interest. A Null Hypothesis also can be said to be giving a proposal that there is not significant difference between the observed data.

An alternative hypothesis is a hypothesis in statistics given contrary to the Null Hypothesis,a Null hypothesis can also be seen in statistics as stating that something is happening among the data.

3 0
3 years ago
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