3 years ago

NEED HELP ASAP ITS TIMED

Mathematics

1 answer:

Arturiano [62]3 years ago

4 0

B. 39

Good luck on yourself timed exam!

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the parallel sides of a trapezium are such that the longer side is 4cm more than the shorter side of the distance between them i

saw5 [17]

Answer:

32cm and 28cm

Step-by-step explanation:

Area of a trapezium=0.5 ( sum of parallel sides ) × height

600=0.5( 4+a+a)×20

where a is the length of the shorter side

600÷0.5=(4+2a)×20

1200=(4+2a)×20

1200÷20=4+2a

60=4+2a

60-4=2a

56=2a

56÷2=a

28=a.

since the longer side is 4 cm more than th shorter side , 28 +4=32

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3 years ago

First question!!! Very simple but I don’t get it. WORTH 25 PTS

erica [24]

Answer:

if the bottom the RST equals 114 you judt need to subtract 114 from 72 and you get 42 :) sorry if it wrong

Step-by-step explanation:

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4 years ago

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You have 10 marbles (5 blue, 3 white, 2 yellow) what is the probability of choosing yellow?

melisa1 [442]

1/5 (one fifth) or 20 percent

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4 years ago

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What is the length of the side opposite the 60 degree angle?

yaroslaw [1]

All triangles equal 180 so the answer would be set up as follows:
180-60-90 (right triangle) = 30 degrees
30 degrees is the answer

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4 years ago

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Empathy means being able to understand what others feel. To see how the brain expresses empathy, researchers recruited 16 couple

yulyashka [42]

Answer:

the residual is 0.2032

Step-by-step explanation:

The regression line has been given as:

Y^ = 0.00753X-0.06759

The paired observation for X is (31, 0.369)

The value of X is the empathy score under subject 15 = 31

The value of the brain activity under subject 15 is 0.369

So we have y^ = 0.00753(31) - 0.06759

= 0.1658

Then the residual = y - y^

= 0.369 - 0.1658

= 0.2032

Therefore the residual is 0.2032

Please check the attachment for the table, it will aid you in understanding the solution

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3 years ago