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eimsori [14]
3 years ago
12

What is the value of this expression 7 divided by 2 - 4.5 x 3 + 8

Mathematics
2 answers:
PtichkaEL [24]3 years ago
4 0
3.5- 4.5×3+8

3.5-13.5+8

= -2
Sergio [31]3 years ago
3 0
The answer should be -2
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A cylinder has a radius of 6 inches and a height of 2 feet. Which of the following should be done first in order to find the vol
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The significant components, the radius and the height, are in inches and feet respectively, you'd need to convert them both to the same unit, whichever it may be, meters or feet or inches or millimeters, so long is the same, then use the volume of a cylinder equation to get it.
7 0
3 years ago
Can someone please help me I really need help help me thank you
harkovskaia [24]

Answer:

<h2><em><u>A to C = 25 </u></em></h2><h2><em><u>A to B = 13 </u></em></h2><h2><em><u>C to B = 37 </u></em></h2><h2><em><u></u></em></h2>

Step-by-Step Explanation:

<em><u>Perimeter</u></em> = 75

<em><u>Sides:</u></em>

2x + 3

3x + 4

2x - 9

<h2 /><h2><em><u>1. Equal the sides added together to the perimeter</u></em></h2>

75 = 2x + 3 + 3x + 4 + 2x - 9

<h2><em><u>2. Simplify Like terms</u></em></h2>

2x + 3 + 3x + 4 + 2x - 9  = 7x - 2

<h2><em><u>3. Place the equation back together</u></em></h2>

75 = 7x - 2

<h2><em><u>4. Isolate the variables and numbers</u></em></h2>

75 = 7x - 2

+2        +2

77 = 7x

<h2><em><u>5. Simplify the equation</u></em></h2>

77 = 7x

/7     /7

<h2><em><u>11 = x </u></em></h2>

<h2><em><u>6. Substitute the value of x into the side lengths.</u></em></h2>

2x + 3 = 2(11) + 3 = 22 + 3 = <em><u>25</u></em>

3x + 4 = 3(11) + 4 = 33 + 4 = <em><u>37</u></em>

2x - 9 = 2(11) - 9 = 22 - 9 = <em><u>13</u></em>

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2 years ago
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y - the number of pens

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x=2y

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x-10=y-1 \\&#10;x=y-1+10 \\&#10;x=y+9

Set 2y and y+9 equal to each other:
2y=y+9 \\&#10;2y-y=9 \\&#10;y=9
She has 9 pens.
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3 years ago
Round 14.354 to the nearest one.
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Answer:

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Step-by-step explanation: hope this helps :)

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