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Dovator [93]
4 years ago
11

Please help me with this and thank you

Mathematics
1 answer:
Dmitry [639]4 years ago
6 0

Answer:

D, 45


Step-by-step explanation:




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a parallelogram has side lenghts 20 cm and 25 cm. the diagonal opposite the obtuse angle measures 38 cm. what is the measure of
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Step-by-step explanation:

1. draw the parallelogram with side 20cm and 25cm respectively and also the diagonal as well.

2.Clearly it forms a triangle in the parallelogram with three known lengths of side.

3.Using the cosine rule : c^2=b^2+c^2 -2bc cos c to find the obtuse angle.

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Can someone help me with this. Will Mark brainliest. Need answer and explanation/work. Thank you.
Bas_tet [7]
Perpendicular line: y = 2x+4
parallel line: y = -2x+3 (or any number different from 4)
neither: y= -4x+-3
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3 years ago
it takes 10.4 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has
Anastasy [175]

Answer:

Test statistic (t) = 0.625

Step-by-step explanation:

<u><em>Step(i):-</em></u>

mean of the Population(μ) = 10.4 hours

Sample mean (x⁻) = 10.7 hours

Standard deviation of the sample( S)  = 1.44

The level of significance (α= 0.1

Sample size 'n' = 9

Degrees of freedom = n-1 = 9-1 =8

<u><em>Step(ii)</em></u>:-

Test statistic

                     t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }

                   t = \frac{10.7 -10.4}{\frac{1.44}{\sqrt{9} } }  =0.625

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3 years ago
X-6y=-2 (0,-5) perpendicular lines *i need to show my work*
olga55 [171]

Answer:

what in the world is this math?

Step-by-step explanation:

6 0
3 years ago
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