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irga5000 [103]
2 years ago
7

Please help … will mark brainliest

Mathematics
1 answer:
vlada-n [284]2 years ago
4 0

Answer:

k = 3

Step-by-step explanation:

Expanding the first term, we find 1/x at 10(kx)²(1/x)³ = 10k²/x

Expanding the first term, we find 1/x at 8*1⁷(-2/x)¹ = -16/x

Then

10k² - 16 = 74

k = 3

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What is the total surface area of the square pyramid below?
Dima020 [189]

Answer:

132m^2 or 144m^2

Step-by-step explanation:

A=a^2+2a\sqrt{\frac{a^2}{4}+h^2 } \\=6^2+2*6\sqrt{\frac{6^2}{4}+8^2 } \\=138.53m^2

That is the exact answer, so i cant tell you which one to choose, as its close to the middle. But if i had to choose i would choose 144m^2 because its just that litte bit closer.

4 0
4 years ago
Y = 2x^2
GarryVolchara [31]

Answer:

y = 2x^2 is a parabola opening up with it's vertex at (0,0)... y=3x^2 -4 is also a parabola opening up, but it is 'thinner' in that it rises in y faster and it's vertex is at (0,-4)

Step-by-step explanation:

all equations of the type y = ax^2 + b are parabolas centered on the y-axis, soo the vertex is always on (0,b)

If a is positive then the parabola opens up,

the bigger a is, the 'thinner' the graph is, i.e. the faster the graph rises

the value of b determines the location of the vertex, if b is added, then the vertex rises over the x-axis, if b is subtracted then the vertex is below the x-axis

8 0
3 years ago
A toothpaste manufacturer wraps its boxes in plastic. Its most popular toothpaste comes in a box that’s 8 centimeters tall and u
Rudik [331]

The height of the travel box version is 2 cm.

<h3>Dilation</h3>

Dilation is the increase or decrease in the size of a figure by a factor k to create and image. Both the figure and image are similar, hence the ratio of their corresponding sides are congruent.

Let h represent the height of the travel box, hence:

h / 8 = 306 / 1224

h = 2 cm

The height of the travel box version is 2 cm.

Find out more on Dilation at: brainly.com/question/10253650

4 0
2 years ago
Use an addition property to solve for a. 10 + (–15) = –15 + a
swat32

10-15=-15+a

+15      +15

10=a

5 0
4 years ago
Read 2 more answers
Which number is located between 15 and 20 on a number line?
jeyben [28]

Answer: 17.5  is located between them.

Step-by-step explanation:

To find out which number is located between the numbers, find their mean average which sum of the numbers divide by the number of values.

15 + 20 = 35

35 / 2 = 17.5

8 0
3 years ago
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