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True [87]
3 years ago
12

Eight less than one-fourth of a number is 4

Mathematics
1 answer:
enyata [817]3 years ago
6 0

1/4n-8=1/4 would be first because it says less than so you switch it. then you put the 8 since it's in the same subtraction problem. Then the word "is" indicates the equal sign. and the n represents "a number" since it is unknown.

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Solve for b. 4b-3b+7= 10
Morgarella [4.7K]

b = 3

Step-by-step explanation:

4b - 3b + 7 = 10

Add similar terms :

4b - 3b = b \\ b + 7 = 10

Collect like terms and simplify

b = 10 - 7 \\ b = 3

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Express the function graphed on the axes below as a piecewise function.
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3 years ago
Please solve this problem because tomorrow is my exam.<br><br>​
jonny [76]

Step-by-step explanation:

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5x - 8 < 7 <=> 5x < 8+7  <=> 5x < 15  =>

x < 3  => A = (-∞ ; 3)

A ∩ N = {0 ; 1 ; 2}

A - N* = (-∞ ; 3) - {1 ; 2}

b).  A = { x ∈ R  I  7x+2 ≤ 9}

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c). A = { x ∈ R  I  I 2x-1 I < 5}

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-4 ≤ 2x ≤ 6  <=> -2 ≤ x ≤ 3  => x ∈ [-2 ; 3]

A ∩ N = {0 ; 1 ; 2 ; 3}

A - N* = [-2 ; 3) - {1 ; 2}

d). A = {x ∈ R I I 6-3x I ≤ 9}

I 6-3x I ≤ 9  <=> -9 ≤ 6-3x ≤ 9  <=>

-15 ≤ -3x ≤ 3 <=> -5 ≤ -x ≤ 3  =>

-3 ≤ x ≤ 5  => x ∈ [-3 ; 5]

A ∩ N = {0 ; 1 ; 2 ; 3 ; 4 ; 5}

A - N* = [-3 ; 5) - {1 ; 2 ; 3 ; 4}

4 0
2 years ago
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