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3 years ago

Help I don’t understand

Mathematics

1 answer:

coldgirl [10]3 years ago

3 0

Answer:

PB=5

Step-by-step explanation:

Since you know that BD=24, you also know that both segments BC and CD have the same value since they're congruent: 12. You also were given the value of PC. Using Pythagorean Theorm, Substitute 12 for a and 13 for c, so the equation would say

12^2+b^2=13^2

Simplify to get

144+b^2=169

Now subtract 144 from 169 and you get 25. That is b^2. All you have to do now is square root 25 to isolate b.

√25=5

So therefore,

b=5

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How many lines of symmetry does the figure have? If the figure has no line symmetry, enter the number

Arlecino [84]

Answer:

One

Step-by-step explanation:

Line of symmetry of a figure is an imaginary line about which the figure can be divided into two equal halves.

In other words, a line passing the center of the figure about which we can fold the figure into two halves overlapping each other.

For the trapezoid given in the figure, line of symmetry will be a vertical line perpendicular to the parallel sides.

Therefore, The figure has 1 line of symmetry.

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3 years ago

Which of the following sets of lengths could not be the side lengths of a triangle?

docker41 [41]

To find out if the three side lengths can create a triangle, the three smaller lengths must be greater than the longer length.

$\bf~Option~A$

$\sf~3~meters,5~meters,7~meters$

$\sf3+5=8>7$

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$\bf~Option~B$

$\sf1~yard,1.25~yards,1.5~yards$

$\sf1+1.25=2.25>1.5$

So this can create a triangle.

$\bf~Option~C$

$\sf5~inches,10.5~inches,17~inches$

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$\bf~Option~D$

$\sf15~millimeters,18~millimeters,30~millimeters$

$\sf15+18=33>30$

So this can create a triangle.

Therefore, your answer is Option C.

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3 years ago

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Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

Absolute value is always the positive value of a number.

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3 years ago

Read 2 more answers

I need help pls someone

Solnce55 [7]