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3 years ago

PLSS HELPP 25 POINTS AND BRAINLIEST

Mathematics

2 answers:

PilotLPTM [1.2K]3 years ago

4 0

Answer:

I believe it would be 3 meters...

dont kill me if im wrong!

Step-by-step explanation:

RideAnS [48]3 years ago

3 0

Answer:

$\Large \boxed{\sf 150 \ m^2}$

Step-by-step explanation:

Surface area of this shape = area of 2 triangles + area of 3 rectangles

$(12 \times 5 \times 0.5 \times 2 )+(13 \times 3+12 \times 3+5 \times 3)= 150$

Height of the triangular base is 12 m.

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Please help me with this #7

Alex

$\text{Given that,}\\\\\text{First term,}~ a_1 = -8~~~~...(i)\\\\\text{12th term,}~ a_{12} = -52~~~...(ii)\\\\\text{Common difference is d.}\\\\(ii)\div(i):\\\\\dfrac{a_{12}}{a_1} = \dfrac{-52}{-8}\\\\\\\implies \dfrac{a_1 + (12-1)d}{a_1} = \dfrac{52}8\\\\\\\implies \dfrac{-8+11d}{-8} = \dfrac{52}8\\ \\\\\implies -8+11d = \dfrac{52(-8)}8\\\\\\\implies -8+11d = -52\\\\\\\implies 11d = -44\\\\\\ \implies d = \dfrac{-44}{11} = -4$

$\\\text{86th term,} ~a_{86} = a+ (86-1)d \\\\~~~~~~~~~~~~~~~~~~~~=-8+85d\\\\~~~~~~~~~~~~~~~~~~~~=-8+85(-4)\\\\~~~~~~~~~~~~~~~~~~~~=-348\\\\\text{Hence, the 86th term is}~ -348$

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2 years ago

What is the height of a hemisphere if it has a radius of 0.8m (80cm)?

Rashid [163]

The height of a semisphere is equal a radius of this hemisphere.

But... if we can talk about the height of the hemisphere ;)

R = 0.8m = 80cm then height of hemisphere is equal 0.8m = 80cm.

5 0

4 years ago

Read 2 more answers

25 points plus brainliest if you get this right

Dmitry_Shevchenko [17]

Answer:

540

Step-by-step explanation:

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3 years ago

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Solve for x<br> Plz help me !!!!

Taya2010 [7]

Answer:

x = 60.5°

Step-by-step explanation:

We use the exterior angle theorem to solve this

90 + 31 = 121

121/2 = 60.5

Thus, our answer is 60.5°

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3 years ago

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4(2x + 3) ÷ 5y

luda_lava [24]

Answer:

8xy+12y/5

Step-by-step explanation:

write the division as a fraction

4(2x+3)/5 y

Calaucte the product

4y(2x+3)/5

Distbtute 4y through the parentheis

8xy+12y/5

which gives you 8xy+12y/5

4 0

3 years ago