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ipn [44]
1 year ago
13

What is the base of -(-2^2)?

Mathematics
1 answer:
Inessa05 [86]1 year ago
4 0

the base is -2 i think that is the answer

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Am I right?? <br> * Show examples &amp; details if I am wrong!! *
baherus [9]

Yes, you are correct.

From the image, we can see 3 triangles, the large triangle and the two triangles that make the larger triangle.

All 3 of these triangles are similar since they're angle measurements are the same (can be proven by geometry).

We can gather the following information from the given information.

  • The largest triangle (the one made up of two triangles) has a hypotenuse of 3+9=12, and a leg length of x. The hypotenuse to leg ratio is 12/x
  • The second largest triangle has a hypotenuse length x and leg length 9. The hypotenuse to leg ratio is x/9

We know the hypotenuse to corresponding leg ratio must be equal since these two triangles are similar. Thus, we have the equation:

12/x = x/9

Using the cross product property gives us:

x² = 9 × 12

x² = 108

Taking the square root of both sides gives us:

x = √108

= 6 √3

Thus, your answer is correct. Great job!

Let me know if you need any clarifications, thanks!

8 0
3 years ago
Which of the following best explains the meaning of the equation?
Assoli18 [71]

Answer:

On a number line, negative five and positive five are the same distance from zero.

Step-by-step explanation:

3 0
2 years ago
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What’s the equation equal
dexar [7]

Answer:

x = 0

Step-by-step explanation:

Given

9 + 5x = 9 + 2x ( subtract 2x from both sides )

9 + 3x = 9 ( subtract 9 from both sides )

3x = 0 ⇒ x = 0

4 0
3 years ago
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We gave a national verbal proficiency test that has a mean score of 500 with a standard deviation of 75. What raw score would co
charle [14.2K]

Answer:

519

Step-by-step explanation:

Let's assume that the scores for the national verbal proficiency test follow a normal distribution.

Mean score (μ) = 500

Standard deviation (σ) = 75

According to a Z-score table, the score for the 60th percentile is roughly z = 0.253

For any score "x", the z-score is given by:

Z=\frac{X-\mu}{\sigma}

For z = 2.53:

0.253=\frac{X-500}{75}\\X=519

The raw score to the 60th percentile is 519.

4 0
3 years ago
Hurry! i need help! What is the slope of y=x+5
Advocard [28]

you cant find the slope without a graph or two points so if you add a graph or two points maybe I can help you

4 0
2 years ago
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