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nlexa [21]
3 years ago
14

A block of wood has the shape of a triangular prism. The base as right triangles. Find it’s surface area

Mathematics
1 answer:
postnew [5]3 years ago
7 0

Answer:

18

Step-by-step explanation:

I think the attached phôt below is your full question.

<u>And here is my answer: </u>

Surface area of a triangular prism = hight * area of the base

Here we have:

  • h= 12
  • Area of the base = 1/2 *2* 1.5 = 1.5

=> Surface area = 12*1.5 = 18

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H + 7 = −7<br> h = Plz help im having truouble.
Natalija [7]
-14 because -14 + 7= -7
8 0
2 years ago
Please help me with this question!!!!!
Naddika [18.5K]

Answer:

7/25

Step-by-step explanation:

θ lies in quadrant ii

so 2θ lies in quadrant iv

csc θ=5/3

sin θ=3/5 (sin θ=1/csc θ)

[cos(α+β)=cosαcosβ-sinαsinβ]

cos (2θ)=cos(θ+θ)=cos θ cos θ-sin θ sin θ=cos² θ-sin ²θ=1-sin²θ-sin²θ=1-2sin²θ

=1-2 (3/5)²

=1-2(9/25)

=1-18/25

=(25-18)/25

=7/25

5 0
3 years ago
Can someone help me part 2
Otrada [13]

Step-by-step explanation:

y = ¼x + 2

m1 = ¼

m of line perpendicular = m2

the formula is : m1×m2 = -1

=> m2 = -1 ÷ m1

= -1 ÷ ¼ = -4

so, the equation is :

y = -4x - 7 (option A)

3 0
2 years ago
(−2k <br> 3<br> −7k <br> 2<br> +5k)+(6k <br> 2<br> +3k)=
shusha [124]

Answer: 5k +7

Step-by-step explanation: -2k + -7k + 5k is -4K and 2+3=5 -4K +5 and 6k +3k= 9k + 2 then u do -4K plus 9k and get 5k next, 5+2

7 0
2 years ago
Can someone help me with question 9
Troyanec [42]

Please refer the pictures below-

Hence the area of the road is 9600m2

8 0
3 years ago
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