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3 years ago

What is the solution to the inequality below? X^2>=81

Mathematics

1 answer:

kotegsom [21]3 years ago

7 0

Answer:

A. x ≤ - 9 or x ≥ 9

Step-by-step explanation:

x² ≥ 81

| x | ≥ 9

x ≥ 0 => x ≥ 9 => x ∈ [ 9 ; + oo)

x < 0 => x ≤ - 9 => x ∈ ( -oo ; - 9 ]

x ∈ ( -oo ; - 9 ] ∪ [ 9 ; + oo)

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Sarah, Fiona and David share £40 in a ratio 3:3:2. How much money does each person get?

LuckyWell [14K]

Answer:

ratio:3:3:2

total of ratio=3+3+2=8

total money=40

sara gets 5x 3/8=15

eiona gets 5x 3/8+15

david gets=5x 2/8=10

Step-by-step explanation:

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2 years ago

I need help with this problemmm, someone help mee!!.

Varvara68 [4.7K]

Answer:

∠A=30°

Step-by-step explanation:

let's call the angle at the bottom B and the one next to the 130 C

∠A=3x-6

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find x:

3x-6+50+8x+4= 180°

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3 years ago

What is a half of 104

Mumz [18]

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6 0

3 years ago

Read 2 more answers

Find the values of x and y when the smaller triangle shown here has the given area.

maria [59]

Answer:

Step-by-step explanation:

so u see 8x4 which is 32 and u can see its 90 degress because of the square and also a acute so x is 3 and y is 5

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3 years ago

What is the slope of the line that passes through the points (-2, -1) and (2, -3)?

Lady bird [3.3K]

Answer:

$m=\frac{-1}{2}$

Step-by-step explanation:

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3 years ago