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Bas_tet [7]
3 years ago
9

Help please? I don't understand..!

Mathematics
1 answer:
jeka57 [31]3 years ago
8 0
Slope height = 12^2 + 5^2 = X^2
144 + 25 = x^2
169 = x^2
X = sqrt(169) = 13
slope height = 13 cm


area of 1 side =  1/2 x 13 x 10 = 65 cm^2
 area of 4 sides = 65 *4 = 260 cm^2

area of sides & bottom:
 sides = 260
bottom = 10^2 = 100
260 +100 = 360 cm^2
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What is the value of the expression 5×(3+6÷3)
jeka57 [31]

Answer:

The correct answer is 15

5 0
3 years ago
Limit as x approaches 9 of x^2 -81/sqrt of x - 3
Ipatiy [6.2K]

Answer:

108

Step-by-step explanation:

Limit as x approaches 9 of x^2 -81/sqrt of x - 3

First substitute x into the expression

= 9²-81/√9 - 3

= 81-81/3-3

= 0/0 (indeterminate)

Apply l'hospital rule

= lim x -> 9 d/dx(x²-81)/√x - 3

= lim x -> 9 2x/1/2√x

Substitute x = 9

= 2(9)/1/2√9

=18/1/(2(3)

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7 0
3 years ago
A 12​-sided die is rolled. The set of equally likely outcomes is ​{1 comma 2 comma 3 comma 4 comma 5 comma 6 comma 7 comma 8 com
LenKa [72]

Answer:

  1

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7 0
3 years ago
Read 2 more answers
Plz help me fast. I'll give 5 points ​
lidiya [134]
A parallelogram has two pairs of opposite equal angles.
ABCD so
A = C and B = D

A = 2x + 35
C = 3x - 5

2x + 35 = 3x - 5
35 + 5 = 3x - 2x
40 = x

A = (2 x 40) + 35 = 115
A = C = 115

Sum of angles of a quadrilateral = 360

Angles B and D are equal
So
B = (360 - (115 + 115))/ 2
= 130/2
= 65

B = D = 65
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3 years ago
Re-write the quadratic function below in Standard Form<br> y= -(x – 8)^2 +4
s2008m [1.1K]

Answer:

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7 0
3 years ago
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