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3 years ago

I really need help finding the surface area

Mathematics

1 answer:

SpyIntel [72]3 years ago

4 0

There are 4 triangles and the formula for the area of a triangle is 1/2BH so 11x10 is 110 and then take half of that and you’ll get 55. Since there are 4 triangles you need to then multiply that by 4 to get 220. And then you have to find the area of the square base which is 11x11 which will come out to 121. So you add the 220 and 121 to get 341.

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The ratio of the measures of the angles in angles JKH is 2:3:4.

otez555 [7]

Answer:

J=40º, K=60º, H=80º

Step-by-step explanation:

since all angles of a triangle add up to 180º, we can make an eqaution.

3x+2x+4x=180

9x=180

x=20

J=2x=20x2=40º

K=3x=20x3=60º

H=4x=20x4=80º

7 0

3 years ago

Larry claims that (14 + 12) × (8 + 12) and (14 × 12) + (8 × 12) are equivalent because they have the same digits and the same op

FromTheMoon [43]

Answer:

$(14+12)\times (8+12) > (14\times 12)+(8\times 12)$

Step-by-step explanation:

First let us evaluate the value of both the expressions.

$(14+12)\times (8+12) = 26\times 20 = 520$

$(14\times 12)+(8\times 12) = 168 + 96 = 264$

a) Hence, Larry's claim that both the expressions are equivalent is wrong.

The evaluation of the expressions have been shown above. The second expression was obtained by swapping the addition and multiplication order and that created the difference.

b) Clearly,

520 > 264

Therefore,

$(14+12)\times (8+12) > (14\times 12)+(8\times 12)$

$(14+12)\times (8+12)$ is greater by the expression $(14\times 12)+(8\times 12)$ by a value of 520 - 264 = 256.

7 0

3 years ago

Formula for a right angle triangle

lana [24]

Pythagoras: A^2 + B^2 = C^2 where c is the side opposite the hypotenuse (opposite the right angle) and B and C are the other sides. Trigonometry: SOH CAH TOA where you can use their formula where sin = opposite/ hypotenuse Cos= adjacent/ hypotenuse Tan= opposite/ adjacent

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3 years ago

Theres supposed to be 3 answers m<1 m<3 m<3

AlladinOne [14]

Answer the question mark is that the moon is a joke right now

4 0

3 years ago

F(x) = (x + 1)(2x - 1)

Marina86 [1]

X1= -1 , X2= 0/5 or 1/2

6 0

3 years ago