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2 years ago

What is the surface area of the regular pyramid?

Mathematics

2 answers:

zimovet [89]2 years ago

5 0

You would have to do 18x2 then 14x2.

olga2289 [7]2 years ago

5 0

Answer:

Step-by-step explanation:

Surface area = $lw+l\sqrt{(\frac{w}{2})^2+h^2}+w\sqrt{(\frac{l}{2})^2+h^2}$

just put the values in the formula h=18,w=14,l=14

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Condense to a single logarithm: 4 log9 11 - 4 log9 7.

Natali [406]

Answer: Log9,(11/7)^4

Step-by-step explanation:

according to the rules of logarithm

1)Subtraction sign(-) becomes division(÷),while addition(+)becomes multiplication (x)

2) the number in front of the log figure becomes an indices

7 0

2 years ago

Oh boys. Can u help me pls!!!!!!!!!!!!!!!!!!!

____ [38]

Answer:

$\displaystyle -5 \\ 2 \\ 8 \\ 5$

Step-by-step explanation:

$\displaystyle 5 + -10 → 5 - 10 = -5 \\ 5 + -3 → 5 - 3 = 2 \\ 5 + 3 = 8 \\ 5 + 0 = 5$

I am joyous to assist you anytime.

5 0

2 years ago

A football has a rebound percentage of 75%. What is the height of the 5th bounce of a

Anton [14]

Answer:

Step-by-step explanation:

Since the height of each bounce is 3/4 of its last peak height we can use a geometric sequence to find the bounce height for any number of bounces.

h=12(3/4)^b

h(5)=12(3/4)^5

h(5)=2.85m

3 0

2 years ago

Given:

Anuta_ua [19.1K]

Answer:

84 square units.

Step-by-step explanation:

If LM - KN = 4, then denote KN = x and LM = x+4.

1. Consider right triangle KLM. By the Pythagorean theorem,

$KL^2 =ML^2+MK^2,\\ \\15^2=(x+4)^2+MK^2.$

2. Consider right triangle KMN. By the Pythagorean theorem,

$MN^2 =NK^2+MK^2,\\ \\13^2=x^2+MK^2.$

Subtract these two equations:

$15^2-13^2=(x+4)^2-x^2,\\ \\225-169=x^2+8x+16-x^2,\\ \\56=8x+16,\\ \\8x=56-16,\\ \\8x=40,\\ \\x=5\ un.$

Then

$13^2=5^2+MK^2,\\ \\MK^2=169-25,\\ \\MK^2=144,\\ \\MK=12\ un.$

The area of KLMN is

$A_{KLMN}=\dfrac{LM+KN}{2}\cdot MK=\dfrac{5+9}{2}\cdot 12=14\cdot 6=84\ un^2.$

7 0

3 years ago

What is the solution set to the inequality?

son4ous [18]

Answer:

Step-by-step explanation:

-x+3 > 5 0r 4x > -8

-x > 2 or x > -8/4

x< -2 or x > -2

6 0

2 years ago