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il63 [147K]
2 years ago
11

Find the cosine of ∠I.

Mathematics
1 answer:
denis-greek [22]2 years ago
7 0

Answer:

\sqrt{\frac{3}{5} } .

Step-by-step explanation:

1) cos(I)=IH/IG;

2) \ IG=\sqrt{IH^2+GH^2} =10;

3) \ cos(I)=\frac{2\sqrt{15}}{10}=\frac{\sqrt{15}}{5}=\sqrt{\frac{3}{5}}.

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VARVARA [1.3K]

Answer:

C)  The area of the landscape model is A = 40 sq ft.

Step-by-step explanation:

The original dimensions of the rectangular patio model  is

Length = L

Width = W

Area of the patio model  = LENGTH x WIDTH =   L  x W

⇒ A  =  L W .............  (1)

Now, the new area A" is enlarged by a factor of 2

⇒  The new Length = L"  = (2 L)

     The new Width  = W"  = (2 W)

So, AREA"  = L" x W" = (2 L) x (2 W)  = 4 (L W)

⇒  A "  =    4 (L W)

But, L W = A   .. from (1)

⇒   A"  = 4  A

But,  the area of the new enlarged patio is 160 square feet.

⇒   160 sq ft  = 4 x A

or, A   = 160 / 4 =40 sq ft

⇒ A = 40 sq ft.

Hence, the area of the landscape model is A = 40 sq ft.

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3 years ago
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54 is the sum of 11 and raj's score
Leviafan [203]

Answer:

54 is the sum of 11 and Raj's age. Use variable "r" to represent Raj's age

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In March, April, and June it rained 2 inches. In February, May, and September it rained 1 inch. In August and October, it rained
koban [17]

Answer:

D

Step-by-step explanation:  

Hope this Helps :D

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3 years ago
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If it doesn't give me the perimeter, how do i find x from this? thank you!​
Mariulka [41]

The way the angles are labeled tell you that they are all congruent. The two triangles you see here also share the side that joins them. Then by the angle-side-angle postulate, the two triangles are congruent, so x + 23 = 13, or x = -10.

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2 years ago
If the point (a,3) lies on the graph of the equation 5x + y = 8 then a =?
Contact [7]

Answer:

a = 1

Step-by-step explanation:

Given the point (a, 3) is on the line: 5x + y = 8.

Any point on the line satisfies the equation.

So, (a, 3) should satisfy the equation 5x + y = 8

Substituting x = a and y = 3, we get:

5(a) + 3 = 8

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Therefore, (1, 3) is the point on the line.

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