3 years ago

Please help giving brain liest :DDDDDDDDDDDDDDDD

Mathematics

1 answer:

adell [148]3 years ago

3 0

Answer:

uhh ik ur gonna hate bc of my answer

Step-by-step explanation:

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In need of help for pentagon area

TEA [102]

Find the area as iff it was a rectangle, then subtract the area of the triangle in the top left corner.

Area of rectangle = 20 x 18 = 360

Area of triangle = 1/2 x 4 x 3 = 6

Area of pentagon = 360 - 6 = 354 cm^2

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3 years ago

What is 3x3 – 11x2 – 26x + 30 divided by x – 5?

Slav-nsk [51]

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3 years ago

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Given ∠8≅∠12, which lines, if any, must be parallel based on the given information? Justify your conclusion.

Valentin [98]

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The height of an adult male is known to be normally distributed with mean of 175 cm and standard deviation of 6 cm. The 20th per

dusya [7]

Answer:

The height below which 20% of the persons lie equals 169.95 cm

Step-by-step explanation:

Given that

Mean height = 175 cm

Standard deviation = 6 cm

Hence for the given question we need to find the standard variate factor ( Z factor) corresponding to the 20% of the area under the standard normal distribution curve

Using the standard normal distribution tables we have Z factor corresponding to an area of 20% equals ( Z = -0.84166)

Thus we have

$Z=\frac{X-\bar{X }}{\sigma }\\\\\Rightarrow -0.84166=\frac{X-175}{6}\\\\\therefore X=-0.84166\times 6+175\\\\X=169.95cm$

6 0

4 years ago

Sasha had $1800 and share it in the ratio 2:3:4 between her 3 cousin what was the largest share

PilotLPTM [1.2K]

Answer:

$800

Step-by-step explanation:

$total \: units \: = \\ 2 + 3 + 4 = 9 \: units \\ 9 \: units \: = 1800 \\ 1 \: unit \: = 1800 \div 9 \: = 200 \\ largest \: share \: = 4 \: units \\ 4 \: units \: = \: 200 \times 4 = 800$

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3 years ago