3 years ago

98464 rounded to the nearest ten thousand?

Mathematics

1 answer:

Simora [160]3 years ago

8 0

The is answer is 10,000.

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What is the volume of a pyramid whose base is a square of area 36 and whose four faces are equilateral triangles?

irina1246 [14]

Answer:

$V = 36\sqrt{2}$

Step-by-step explanation:

The volume of a pyramid is

$V = \dfrac{1}{3}Bh$

where B = area of the base, and h = height of the pyramid

The base is a square.

$A = s^2$

$s = \sqrt{A}$

$s = \sqrt{36}$

$s = 6$

The side of the base has length 6. Each face of the pyramid is an equilateral triangle with side of length 6.

An altitude of this triangle measures

$a = \sqrt{6^2 - 3^2}$

$a = \sqrt{27}$

The pyramid is formed by 4 equilateral triangles whose bases form a square. The tips of the faces meet at a single point on top. The vertical distance from that point to the center of the base is the height of the pyramid.

$h = \sqrt{(\sqrt{27})^2 - 3^2 }$

$h = \sqrt{27 - 9}$

$h = \sqrt{18}$

$h = 3 \sqrt{2}$

Volume of the pyramid:

$V = \dfrac{1}{3}Bh$

$V = \dfrac{1}{3}(36)(3\sqrt{2})$

$V = 36\sqrt{2}$

5 0

3 years ago

kevin answered 54 out of 60 questions correct on his algebra quiz.what is his score as a percent ? round your answer to the near

Mila [183]

Answer: 90%

Step-by-step explanation:

54/60=0.9 0.9*100= 90

6 0

3 years ago

Read 2 more answers

Add 10 to z, then double the result<br> Do not simplify any part of the expression.

dybincka [34]

2(z+10)

2z+20

Answer:

2z+20

4 0

2 years ago

Number d I need help with

Natasha2012 [34]

Answer:

15 5/9 °C

Step-by-step explanation:

Put 60 where F is in the equation and do the arithmetic.

... C = (5/9)(60 -32) = (5/9)(28) = 140/9

... C = (135 +5)/9 = 15 5/9

8 0

3 years ago

IT COST $9 TO GO TO PETE'S POTTERY PLACE TO MAKE YOUR OWN BOWLS $3 PER BOWL. NATALIE GOES TO PETE'S POTTERY PLACE AND MAKES B BO

S_A_V [24]

C= 5(9*3b)
C= 5(9*12)
C= 5(108)
C=540

8 0

3 years ago