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nikdorinn [45]
3 years ago
9

Find the value of x , this like similar right triangles and geometric means and stuff

Mathematics
1 answer:
insens350 [35]3 years ago
7 0

Answer:

16

Step-by-step explanation:

We can calculate the value of x using Euclidean theorem

15^2 = 9 × (x+9)

225 = 81 + 9x subtract 81 from both sides

144 = 9x divide both sides by 9

16 = x

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1. Evaluate the following:<br> a) 249 =<br> b) - 100<br> c) 10 + 7169
mario62 [17]

Answer:

a) 249 = 249 or 2.49 × 10²

b) - 100 = - (10)²

c) 10 + 7169 = 7179

Step-by-step explanation:

3 0
4 years ago
23 cm
Alenkasestr [34]

Answer:

445.2 square cm

Step-by-step explanation:

The surface area consists of  area of two bases and area of three leteral faces. Each lateral face is a rectangle with length of 23 cm and width of 6 cm.

The area of rectangle is

A_{rectangle}=\text{length}\times\text{width}

So,

A_{rectangle}=23\times 6=138\ cm^2

The area of base is given as 15.6\ cm^2

Thus, the surface area is

SA=2A_{base}+3A_{lateral\ face}\\ \\SA=2\cdot 15.6+3\cdot 138=445.2\ cm^2

5 0
4 years ago
Como se multiplican polinomios
seraphim [82]
I hope you speak english, because although i understood your question I don't know enough spanish to respond in it. You multiply polynomials by multiplying each part of one polynomial by all the other parts of the others, and then adding it all. For example: (ax+b) * (x+c) = (ax*x)+(ax*c)+(b*x)+(b*c) = a x^{2}  + acx + bx+bc

Comprehende? 
7 0
3 years ago
13x+7=8x+27<br> 20 points
Montano1993 [528]

Answer:

x=4

Step-by-step explanation:

13x+7=8x+27

5x+7=27

5x=20

x=4

5 0
3 years ago
Read 2 more answers
The functions f and g are defined as follows.
mariarad [96]

Answer:

x != -2, x^2 + 1, 1/5

Step-by-step explanation:

(a) It can be understood that nothing can divide 0

thus denominator cannot be 0 meaning x cannot be -2.

(-2 + 2) = 0

(b) y = sqrt(x-1)

inverse meaning we make x the subject

square both sides

y^2 = x - 1

y^2 + 1 = x

inverse = x^2 + 1

(c) composite function:

pass g(10) as domain of f

g(10) = 3, f(3) = 1/(5) = 1/5

6 0
3 years ago
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