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andrezito [222]
3 years ago
11

Need help on A. B. & C.

Mathematics
2 answers:
nignag [31]3 years ago
5 0

Answer:

Step-by-step explanation:

A. 7x + 52

Add your like terms (the numbers with variables and the numbers without)

B. 13x + 142

C. Put 8 in for x.

13(8) + 142 = 246 points

Katena32 [7]3 years ago
4 0
I only know c. Put 8 for c
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Brut [27]
61.67$ because you round the 7 up to the nearest hundredth
7 0
2 years ago
The graphs below have the same shape. Complete the equation of the red<br> graph.
inn [45]

Answer:

Step-by-step explanation:

F(x) = 2 - x²

3 0
3 years ago
Select the two expressions equal to the area of this figure in square centimeters.
zepelin [54]

Answer:

1.(6*4) + (18*6) + (6*4)

1.(6*10) + (6*6) + (6*10)

Step-by-step explanation:

there are two ways to break this shape into three rectangles:

1.Top right rectangle, Top left rectangle, Bottom long rectangle

2. Left rectangle, Middle square, Right rectangle.

5 0
2 years ago
4. Find the vertex, focus, and directrix of the parabola. Sketch its graph, showing the focus and the directrix.
valentina_108 [34]

Answer:

vertex - (0,0)

focus - (0, 3/4)

directrix - 3/4

parabola- x^2=-3y

graph of equation:

8 0
2 years ago
The angle of elevation of the top of a tower from a point 100m away is 45 degrees. What is the height of the tower to the neares
OLEGan [10]
<h3>Answer: 100 meters</h3>

===========================================

Explanation:

If you draw out the diagram, then you'll find that a 45-45-90 triangle forms. The nice thing about this type of triangle is that the two legs are always the same length. The horizontal leg is 100 meters, so the vertical leg must also be 100 meters.

Side note: this type of triangle is an isosceles right triangle.

---------

You could use the tangent rule to get the same thing

tan(angle) = opposite/adjacent

tan(45) = 100/x

1 = 100/x

1*x = 100

x = 100

In this case, the opposite leg is the vertical leg since it is furthest from the angle of elevation.

5 0
3 years ago
Read 2 more answers
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