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ArbitrLikvidat [17]
3 years ago
8

Confused? About this question

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
6 0
The answer is 108 degrees the reason being vertically opposite angles
Readme [11.4K]3 years ago
5 0

Answer:

Step-by-step explanation:

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Oh lord help q-q <br> I have like no time left-
galina1969 [7]

Answer:

(Triangular pyramid)

Lateral area = 1650m^{2}

Total surface area = 1860.1m^{2}

(Triangular prism)

Volume = 660cm^{3}

Step-by-step explanation:

<u> For the triangular pyramid</u>

Area of triangle = \frac{1}{2} × base × height

Area of the base = \frac{1}{2} × 22 × 19.1 = 210.1

Area of the sides = \frac{1}{2} × 22 × 50 = 550

Number of sides (excluding base) = 3

∴ Total Area = 210.1 + (550 × 3)

= 210.1 + 1650 = 1860.1m^{2}

Lateral Area = (550 × 3)  = 1650m^{2}

<u>For the triangular prism</u>

Area of the triangle = \frac{1}{2} × 12 × 5 = 30

Volume = Area x Height

Volume = 30 ×  22 = 660cm^{3}

5 0
3 years ago
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
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