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Anestetic [448]
2 years ago
5

Nine times a number decreased by four

Mathematics
2 answers:
Wewaii [24]2 years ago
7 0
The answer for this question is 9x-4
PolarNik [594]2 years ago
5 0

Answer: 9x - 4

Step-by-step explanation:

We know that a number must be decreased by four. Let's break it up a little.

Nine times <em>some </em>number. We don't know what nine will be multiplied by, so we will just write a placeholder number: x. This number will be multiplied by nine. So it will turn into 9x.

We must decrease (subtract) from this by four. Subtracting 9x by four can be written as 9x - 4.

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An envelope is 4 cm longer than it is wide. the area is 96 square centimeters. find the length and width.
Dennis_Churaev [7]
<span>So, L*W=A Because it is 4 cm longer, L=W+4 Because the area is 96, LW=96 Substitute to get W(W+4)=96 Multiply it out. W^2+4W-96=0 By solving the quadratic, W+12(W-8)=0 so either W+12 or W-8 is zero. The width must be positive, so the width is 8. Therefore the length is 12. 

  Hope this helps.</span>
4 0
3 years ago
Help please <br><br> look at picture <br><br> supplementary angles
8_murik_8 [283]

Answer:

x=16

Step-by-step explanation:

....,...................

5 0
3 years ago
When Josie applies for the job of store cashier, she is given a test that involves answering 150 simple addition and subtraction
Naddika [18.5K]

Answer:B

Step-by-step explanation:

4 0
3 years ago
Can someone help me out ? Don't just guess the answer :(
Monica [59]
1) 2m+6 / m² + 7m - 12  +  (m+2)/(m+4)

= 2(m+3) / (m+4)(m+3)  + (m+2)/(m+4)

= 2/(m+4) + (m+2)/(m+4)

= 2+m+2 / (m+4)

= m+4 / m+4

= 1  [ Option A ]

Answer 2) 3/ (x+4)  + 7/ (x-3)

=  3(x-3) + 7(x+4)/ (x² +x - 12)

= 3x-9 + 7x + 28 / (x² +x - 12)

= 10x + 19 / (x² +x - 12)  [ Option A ]

Hope this helps!
5 0
3 years ago
Read 2 more answers
Write two expressions that could be
N76 [4]

Answer:$80.24

Step-by-step explanation:68*0.18(18%)

12.24

68+12.24=$80.24

3 0
2 years ago
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