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notsponge [240]
3 years ago
13

Find the value of x so that the function has the given value. j(x)=−4/5x+7; j(x)=−5

Mathematics
1 answer:
zavuch27 [327]3 years ago
4 0
Sub j(x)=-5 into the first eq.
-5=(4/5x)+7
Add 7 to both sides
2=4/5x
Muliply both sides times 5x
10x=4
Divide both sides by 10
X=4/10
Simplify
X=2/5
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Answer:

Please check attachment for graph

Step-by-step explanation:

B. With hawaii airline = -0.300

Without hawaii airline = 0.197

With hawaii airline

EX = 475.3

EY = 157.17

XY = 8042.11

X² = 26883.55

Y² = 3159.375

The correlation coefficient

= 72378.99-74702.9/7737.421

= -2323.91/7737.421

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Without hawaii airline

EX = 396.9

EY = 152.11

EXY = 7645.406

X² = 20736.99

Y² = 3133.772

= 790.789/4021.161

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8 0
3 years ago
Classify the triangle with 9, 15, 19 as an acute right obtuse or not a triangle
Novosadov [1.4K]

Answer:

Hence the correct option is the last one . The triangle is an obtuse angled triangle.

Step-by-step explanation:

i) the sum of any two sides added together is greater than the third side hence this is a triangle.

ii) it is<em><u> not</u></em> a right angled triangle as \sqrt{9^{2} + 15^{2} } \neq  19 and \sqrt{9^{2} + 15^{2} } <  19

iii) the triangle is not acute from ii) above

iv) the triangle is an obtuse triangle from ii) above.

8 0
3 years ago
What is the side length, s, of the square? A= 81 m2
Alborosie

Answer:

The side length is 9 m

Step-by-step explanation:

The area of a square is given by

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81 = s^2

Take the square root of each side

sqrt(81) = sqrt(s^2)

9 =s

The side length is 9 m

4 0
4 years ago
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ValentinkaMS [17]

Answer:

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Step-by-step explanation:

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3 years ago
How do you find the area of a hexagon?
puteri [66]
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8 0
4 years ago
Read 2 more answers
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