Three families went to an amusement park

Mathematics

1 answer:

Sliva [168]2 years ago

8 0

Answer:

5a+6c+4s

Step-by-step explanation:

just add up the variables (an expression is just a mathemetical expression that doesnt have an equal sign)

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Triangle DEF is a right triangle. If FE=5 and DF=13, find DE.

Nadya [2.5K]

Answer:

Step-by-step explanation:

I am amusing you are looking for the hypotenuse since this is middle school.

If you have the legs and are looking for the hypotenuse you use the Pythagorean Theorem $a^{2} + b^{2} = c^{2}$

The legs are a and b, and the hypotenuse is c

The work would look like this

$13^{2} + 5^{2} = c^{2} \\169+25= c^{2} \\194= c^{2} \\\sqrt{194} = \sqrt{c^{2} } \\13.9283883... = c$

extra notes

I rounded to 13
If you didn;t know you cancles exponents with roots

so the $c^{2}$ is cancled by aka $\sqrt{c}$

Hope this helped :)

4 0

3 years ago

Find the area of the given quadrilateral.<br> Pls :)

Tasya [4]

I think your teacher may have made a typo. Refer to the diagram below. If we ignore segment ZA for now, we can see a rectangle forms with angle W = angle Y = 90. Also, we can see that WX = 6 is the horizontal base and WZ = 8 is the vertical height.

However, the side opposite WZ (which is XY) should also be 8 cm tall, and not 6 cm. If XY was 6 cm, then point Y would move to where point A is located (and the quadrilateral would be WXAZ instead of WXYZ). This new quadrilateral would not have a 90 degree angle at point Y's new location.

In other words, if we want angle Y to be 90 degrees, then side XY must be 8 units long. I have a feeling this is where the typo is, but your teacher might have been intending to say something else.