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Anettt [7]
3 years ago
9

Please answer this correctly without making mistakes I want ace expert and genius people to answer this correctly without making

mistakes

Mathematics
1 answer:
Tanya [424]3 years ago
5 0

Answer:

2q-10

Step-by-step explanation:

The product of 2 and q is 2q and ten fewer than that 2q-10

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A 30-meter high building sits on top of a hill. The angles of elevation of the top and bottom of the building from the same spot
Vladimir79 [104]
<h2>A 30-meter high building sits on top of a 151.52 meter high hill.</h2>

Explanation:

According to the given data, we can draw a figure (Please refer the attachment below)

Building's height = 30 meter

Angle of elevation from a spot to the top of the building = 55 degrees

Angle of elevation from the spot to the top of the building = 50 degrees

To find the height of the hill, we need to use the formula,

tan \,\theta = \frac{opposite \,side}{adjacent \,side}

then, tan \,50 = \frac{h}{x}

\Rightarrow x = \frac{h}{tan 50}

\Rightarrow x = \frac{h}{1.192}   .... (1)

Similarly, tan \,55 = \frac{30+h}{x}

\Rightarrow x = \frac{30+h}{tan 55}

\Rightarrow x = \frac{30+h}{1.192}   .... (2)

(1) = (2) becomes

\frac{h}{1.192} = \frac{30+h}{1.428}

[tex]\Rightarrow [tex] 1.428h  = (30 + h)1.192

1.428h  =  35.76 + 1.192h

1.428h - 1.192h = 35.76

0.236h = 35.76

h = 151.52 meter

Therefore, the hill highs 151.52 meter.

4 0
3 years ago
What is 1.8 added 8 times? (IF YOU CAN PLS DO IT IN EXPLANATION) and this is about decimals and pls do it in grade five type, bc
Salsk061 [2.6K]

Answer:

14.4

Step-by-step explanation:

1.8 added 8 times = 1.8 * 8

1.8 * 8

use distributive property

1.8 = 1 + 0.8

1.8 * 8 = (1+0.8) * 8

          = 1*8 + 0.8*8

anything multiplied by 1 equals itself

1*8 + 0.8*8 = 8 + 0.8 * 8

0.8 = 8/10

0.8 * 8 = (8/10) * 8

           = 64/10

            = 6.4

8 + 0.8 * 8 = 8 + 6.4 = 14.4 as our answer

8 0
3 years ago
What is 3^-3 * 10^-2 evaluated?
SVEN [57.7K]

Step-by-step explanation:

3^(-3) * 10^(-2)

= 1/27 * 1/100

= 1/2700.

7 0
3 years ago
Read 2 more answers
If f(x)=3x^2-7 , find f(4). Show all work
katrin2010 [14]
Plug in all x's for 4.  4^2 = 16 --> 16x3=48 --> 48-7 = 41 
41 is the final answer
4 0
4 years ago
Read 2 more answers
Please answer please please answer
zlopas [31]
The last option should be correct
5 0
3 years ago
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