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3 years ago

Really need help with this last part

Mathematics

1 answer:

strojnjashka [21]3 years ago

8 0

Answer:

0.64

Step-by-step explanation:

If it is at least one day than it could be once or twice.

multiply to find the probabilities of each day with walking and then add them

WW= 0.6 x 0.1 = 0.06

WB= 0.6 x 0.9 = 0.54

BW= 0.4 x 0.1 = 0.04

Then add these together

=0.64

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Someone plz help me out

laila [671]

One the first set, #1 figure, notice we have two angle tickmarks, so those angles are equal, however, notice at segment AB, is at the border of both triangles, so AB is just the same length for ∡ABC as it's for ∡ADB.

so, we have an Angle, then a Side, and then an Angle, so they're congruent by ASA.

now, on the 2nd set, #2 figure, we have an angle tickmark and a side tickmark, hmmmmm but notice angles 1 and 2, they're just across from each other at that junction, therefore, angles 1 and 2 are vertical angles adn therefore are also equal.

so, we have a Side, then an Angle and then another Side, the triangles are congruent by SAS.

8 0

3 years ago

Is the following statement a compound statement? equilateral triangles have equal sides and equal angles. yes no

Orlov [11]

Yes, because you are combining the sentences:
Equilateral triangles have equal sides.
Equilateral triangles have equal angles.
Correct me if I'm wrong. :)

4 0

3 years ago

The temperature of a liquid is decreasing at a constant rate. After two minutes of cooling it was 178 degrees and after 5 minute

enot [183]

Answer:

Step-by-step explanation:

If the liquid is cooling at a constant rate, then the equation for this is linear. We can use the info given to find the linear equation for this situation. We have 2 points: (2, 178) and (5, 154), where the x coordinate represents the time in minutes, and y represents the temperature. We use these values in the slope formula:

$m=\frac{154-178}{5-2}=-\frac{24}{3}=-8$

Now we will use one of the points to finish writing the equation. I chose (2, 178), but it doesn't matter which one you choose; they will both give you the same equation in the end.

y - 178 = -8(x - 2) and

y - 178 = -8x + 16 so

y = -8x + 196

If we are looking for the temp when the liquid starting cooling, then we are looking for the temp at time 0, or when x = 0 (sincce x is our time).

y = -8(0) + 196 so

y = 196

That's the temp of the liquid before it started any cooling.

3 0

4 years ago

If a°,b°and c° are the angle of traingle a°+b°+c°=?

Komok [63]

Answer:

180 degrees

Step-by-step explanation:

the sum of angles in a triangle is 180degrees

5 0

3 years ago

Does anyone know this?

Vladimir79 [104]

Answer:

2.4x10^-2

Step-by-step explanation:

since this number is a decimal you will use a negative number above the 10...

4 0

3 years ago