2 years ago

Please give me the answer (click on file)

Mathematics

1 answer:

Dovator [93]2 years ago

5 0

Answer:

x = 122

Step-by-step explanation:

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CaHeK987 [17]

Answer:

Step-by-step explanation:

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3 years ago

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10 POINTS Find the surface area of the regular pyramid. Round to the nearest tenth if necessary.

NNADVOKAT [17]

Answer:

$SA=234.8\ yd^2$

Step-by-step explanation:

we know that

The surface area of the regular pyramid is equal to the area of the triangular base plus the area of its three triangular lateral faces

step 1

Find the area of the triangular base

we know that

The triangular base is an equilateral triangle

The area applying the law of sines is equal to

$A=\frac{1}{2}(14^2)sin(60^o)$

$A=\frac{1}{2}(196)\frac{\sqrt{3}}{2}$

$A=49\sqrt{3}=84.87\ yd^2$

step 2

Find the area of its three triangular lateral faces

$A=3[\frac{1}{2}bh]$

we have

$b=14\ yd$

Find the height of triangles

Applying the Pythagorean Theorem

$10^2=(14/2)^2+h^2$

solve for h

$100=49+h^2$

$h^2=100-49$

$h=\sqrt{51}\ yd$

substitute

$A=3[\frac{1}{2}(14)\sqrt{51}]$

$A=149.97\ yd^2$

step 3

Find the surface area

Adds the areas

$SA=84.87+149.97=234.84\ yd^2$

Round to the nearest tenth

$SA=234.8\ yd^2$

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3 years ago

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What is the location of the point on the number line that is 3/7 of the way from A= -4 to B=17?

Margaret [11]

The point that is 3/7 of the way between -4 and 17 is 5

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What is the probability of spinning a C? В В A В [?]% СА СС

Mkey [24]

3/8 * 100 = 37.5%
To an integer it is 38%

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3 years ago

Divide: 8.4 x 10^12 -------------- 4.2 x 10^6

Varvara68 [4.7K]

8.4 x 10^12 / 4.2 x 10^6 = 2 x 10^6

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3 years ago

Please give me the answer (click on file) ​

Please give me the answer (click on file)