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den301095 [7]
3 years ago
15

Someone help plz make sure it’s right :)

Mathematics
2 answers:
Anestetic [448]3 years ago
8 0

Step-by-step explanation:

10² = 8² + x²

x² = 10² - 8²

x² = 36

x = √36

x = 6

fomenos3 years ago
4 0

Answer:

6 m

Step-by-step explanation:

By Pythagoras Theorem:

x =  \sqrt{ {10}^{2} -  {8}^{2}  }  \\  \\ x =  \sqrt{100 - 64}  \\  \\ x =  \sqrt{36}  \\  \\ x = 6 \: m

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True or false: the set of whole numbers is equal to the set of natural numbers
kirill115 [55]

Answer:

False

Step-by-step explanation:

This statement is false.

The set of whole numbers include the set of Natural numbers "N" = {1, 2, 3, 4, 5, 6, ...}, the set of the negatives of the natural numbers: {-1, -2, -3, -4,...}, and the zero: {0}

We see then that the set of Natural numbers is a subset of the set of whole numbers Z = {... -4,-3,-2,-1, 0,1, 2, 3, 4, 5, ...}

6 0
3 years ago
Read 2 more answers
-0.4x-3.1=5.9 enter your answer as a decimal or as a mixed number in simplest form in the box
Katyanochek1 [597]

Answer:

x = -22.5

Step-by-step explanation:

-0.4x - 3.1 = 5.9

+3.1 +3.1

-0.4x = 9

/-0.4 /-0.4

x = -22.5

6 0
3 years ago
What's is the answer​
topjm [15]

Answer:

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4 0
3 years ago
Help please this my second time posting this please help
Nesterboy [21]

Answer:

x = √30

Step-by-step explanation:

From small triangle BDC:

using Pythagorean theorem

CB² = BD² + DC²

x² = BD² + 3²

Fron triangles BDC and ADB.

ΔBDC has long leg BD and short leg DC.

ΔADB has long leg AD and shirt leg BD.

AD : BD = BD : DC

7 : BD = BD : 3

7*3 = BD*BD

BD² = 7*3 = 21

x² =  BD² + 3² = 21+9 = 30

x² = 30

x = √30

4 0
3 years ago
A trapezoid has an area of 80.75 sq. in., and its two bases are 7 and 12 inches long. Find the height of the trapezoid. a. 8.5 i
charle [14.2K]
<span>The formula is area of trapezoid = average base x average height 

We're going to do this in reverse.

Area = 80.75
[(7 + 12)/2] = 9.5 (height)
height = 80.75 / 9.5 = 8.5 

The height is 8.5, so the answer is D.</span>
5 0
4 years ago
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