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Debora [2.8K]
3 years ago
8

Find a of this angle.

Mathematics
2 answers:
gladu [14]3 years ago
7 0
A is 85 ° because 2x is 38, 38 + 57 is 95 ° and 180-95 is 85 °
Mice21 [21]3 years ago
6 0

In a triangle, the total angle is 180 degrees. A straight line is always 180 degrees. With this in mind, the following can be obtained:

a + 2x + {57}^{o}   =  {180}^{o}  \\ 5x + a =  {180}^{o}

These are simultaneous equations.

a + 2x +  {57}^{o}  = 5x + a \\ 3x =  {57}^{o}  \\ x =  {19}^{o}  \\ 5x + a =  {180}^{o} \\ 5( {19}^{o}  ) + a =  {180}^{o}  \\ a =  {85}^{o}

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What is the total surface area of the square pyranid?​
monitta

Answer:

The general formula for the total surface area of a regular pyramid is T. S. A. =12pl+B where p represents the perimeter of the base, l the slant height and B the area of the base.

8 0
3 years ago
Read 2 more answers
If f(x) = x+3 and g(x) = VX-1,<br> what is (fºg)(26)?
scZoUnD [109]

Answer:

26V + 2

Step-by-step explanation:

This is the same as saying f(g(x)), where x = 26

First, lets figure out what g(x) is equal to when x = 26

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Now we input 26V - 1 into f(x) for x

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8 0
3 years ago
50 POINTS PLEASE EXPLAIN ANSWER A slice is made perpendicular to the base of a right rectangular pyramid through the vertex.
Elza [17]
Um, we see that the slice created the triangle, and the formula to find the area of the triangle:
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In this case, Base=5 cm
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A=5.5×5
A=27.5 square cm. As a result, the area of the resulting two-dimensional cross section is 27.5 square cm. Hope it help!
8 0
3 years ago
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Consider a parabola P that is congruent to y=x^2, opens upward, and has vertex (0,0). Find the equation of a new parabola that r
slega [8]

9514 1404 393

Answer:

  y = -(x+1)^2 +3

Step-by-step explanation:

Translating f(x) left by 1 unit replaces x with x+1.

Translating f(x) up by 3 units replaces f(x) with f(x)+3.

Reflecting f(x) over the x-axis replaces f(x) with -f(x).

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When y = x^2 is reflected over the x-axis, it becomes ...

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When y = -x^2 is translated 1 unit left, it becomes ...

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When y = -(x+1)^2 is translated 3 units up, it becomes ...

  y = -(x +1)^2 +3

7 0
2 years ago
You earn $8.50 per hour. Then you receive a raise to $9.35 per hour. Find the percent increase. Then find your pay per hour if y
netineya [11]
Subtract $8.50 by $9.35
4 0
3 years ago
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