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Ksenya-84 [330]
3 years ago
8

HELP ME Look at pics

Mathematics
2 answers:
vivado [14]3 years ago
6 0
9x^2 - 12y^2 - 11x, the last answer, number 4
Ahat [919]3 years ago
5 0

combine all the like terms

 8x^2 + x^2 = 9x^2

-9y^2 - 3y^2 = -12y^2

-4x-7x = -11x

 so you have 9x^2 -12y^2-11x

 Answer id the last one

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Look at the triangle below which of the following represents two of the angle measures of the triangle
Gelneren [198K]

Answer:

C. 60° and 80°

Step-by-step explanation:

Sum of triangle = 180°

Therefore,

8x + 4 + 6x - 2 + 10x + 10 = 180

Add like terms

8x + 6x + 10x + 4 - 2 + 10 = 180

24x + 12 = 180

24x = 180 - 12

24x = 168

x = 168/24

x = 7

Find each measure of the angles by substitute x = 7 into each expression

8x + 4 = 8(7) + 4 = 60°

6x - 2 = 6(7) - 2 = 40°

10x + 10 = 10(7) + 10 = 80°

The answer is 60° and 80°

6 0
3 years ago
If 1000 square centimeters of material is available to make a box with a square base and an open top, find the largest possible
guapka [62]
<span>The area of the base is x^2> The height is h. Each side of the box has area xh. There are 4 sides of the box so the total surface area of the box is x^2+4xh and that is equal to 1000. Solve that equation for h: x^2+4xh = 1000 h = (1000-x^2)/4x so the Volume = x^2[(1000-x^2)/4x] Simplify and get V = 250x-x^3/4 The volume will be a maximum when its first derivative is 0. V' = 250-3/4x^2 Set to 0 and solve. x=18.26 Now plug into the volume function to find the maximum volume: V=250(18.26)-(18.26)^3/4 V= 4564.35 - 1522.10 =3042.25</span>
6 0
3 years ago
Read 2 more answers
What is the median of the data set represented by the dot plot?
sesenic [268]

Answer:

  • Median is 14

Step-by-step explanation:

The median is the middle number (or average of middle two numbers if data set has even number of elements) of the data set.

According to the graph, the data set has 9 elements.

The 5th number in the set is the median, which is 14

4 0
2 years ago
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What are two ways you can find the surface area of a prism?
slega [8]
1. If the matching ends are triangles, find the area of the triangle (A=1/2bh)
2. If Matching ends are rectangles/squares, find the area of the rectangle/square (bh)
Hope that was helpful!!!
5 0
3 years ago
Read 2 more answers
If x=82902, what is... x*6930+93945*x/7?
olganol [36]

Answer: 1194677035.714285

Step-by-step explanation:

= {(82902 * 6930)+(93945*82902)} / 7

= (574510860 + 7788228390) / 7

= 8362739250 / 7

= 1194677035.714285

3 0
3 years ago
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