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2 years ago

Find the surface area of the pyramid. The side lengths of the base are equal

Mathematics

1 answer:

amid [387]2 years ago

5 0

Answer: just download photo math

Step-by-step explanation:

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The base of an isosceles triangle is 12 cm and its perimeter is 48 cm find its area

NikAS [45]

I hope it helps you ❤️❤️❤️❤️❤️❤️

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2 years ago

Read 2 more answers

Let sin A= -3/5 with 270°< A< 360°. Find the following.<br> sin A/2

GREYUIT [131]

Answer:

1/sqrt10

Step-by-step explanation:

1) Find out cosA using formula (cosA)^2+(sinA)^2=1

The module of cosA= sqrt (1- (-3/5)^2)= sqrt 16/25=4/5

So cosA=-4/5 or cosA=4/5.

Due to the condition 270degrees< A<360 degrees, 0<cosA<1 that's why cosA=4/5.

2) Find sinA/2 using a formula cosA= 1-2sinA/2*sinA/2 where cosA=4/5.

(sinA/2)^2= 0.1

sinA= sqrt 0.1= 1/ sqrt10 or sinA= - sqrt 0.1= -1/sqrt10

But 270°< A< 360°, then 270/2°<A/2<360/2°

135°<A/2<180°, so sinA/2 must be positive and the only correct answer is

sin A/2= 1/sqrt10

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2 years ago

(2x-1) (3x+5) -(2x-1) (x+4)

Veseljchak [2.6K]

Answer:

4x^2−1

Step-by-step explanation:

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2 years ago

City code says you need to have a total of at least 54 toilet stalls, but each bathroom can only have 6 stalls. How many bathroo

Lady bird [3.3K]

City code says you need to have a total of at least 54 toilet stalls, but each bathroom can only have 6 stalls.

So, Let the number of bathrooms to be built be = x

Number of toilet stalls needed = 54

Number of stalls each bathroom can have = 6

So, the number of bathrooms to be built are =

$6(x)=54$

$x=\frac{54}{6}$

$x=9$

Hence, one must build 9 bathrooms with 6 stalls each.

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2 years ago

Marge has $350 toward the cost of her vacation.The vacation will cost $1,750.What percent of the cost of the vacation has Marge

Scilla [17]

Marge has saved 20% to the cost of the vacation

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2 years ago