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const2013 [10]
3 years ago
9

Help plz with question

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
8 0
It would be 121 hejsjskbshekanzbsjaka
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I need help fast please
marta [7]

Step-by-step explanation:

(-)(-) = +

-  \frac{3}{5}  +  \frac{5}{9}

-   \frac{27}{45}  +  \frac{25}{45}

- \frac{2}{45}

8 0
3 years ago
Someone help!! 20 points to whoever can help me with this problem and give me the correct reasoning
MrMuchimi

Answer:

80

Step-by-step explanation:

180-(60+40)=180-60-40=180-100=80

4 0
3 years ago
Read 2 more answers
SURFACE AREAS - PYRAMIDS?
Bond [772]

The total surface area consists of the base area and the surface area (the area of all lateral faces). The base is a hexagon with side a=3 cm.

A_{hexagon}=6A_{triangle}=6\cdot \dfrac{1}{2} \cdot \dfrac{a^2\sqrt{3}}{4} =\dfrac{3}{4} \cdot 3^2\cdot \sqrt{3}=\dfrac{27\sqrt{3}}{4} sq. cm.

Each lateral face is an isosceles triangle with height h=12 cm and base a=3 cm. The area of one such lateral triangle is

A_{lateral}=\dfrac{1}{2}\cdot h\cdot a= \dfrac{1}{2}\cdot 12\cdot 3=18 sq. cm.

Then the total surface area is:

A_{total}= \dfrac{27\sqrt{3}}{4} +6\cdot 18=\dfrac{27\sqrt{3}}{4} +108=11.7+108=119.7 sq. cm.

Answer: 119.7 sq. cm.

7 0
4 years ago
Find the composite of the solid figure
sweet-ann [11.9K]
Times them all :) and that's your answer
3 0
4 years ago
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Surface area of a cube​
Lynna [10]

Answer:

i think think a  square would have 6 as a surface area

Step-by-step explanation:

soryr if im wrong

3 0
3 years ago
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