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yulyashka [42]
3 years ago
6

Factor this expression completely. 2x2 + 11x + 15

Mathematics
1 answer:
Marianna [84]3 years ago
6 0

Answer:

Factor by grouping.

(

x

−

3

)

(

2

x

−

5

)

Step-by-step explanation:

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Teresa, Emily, and Rhoda went to the carnival. One of them is afraid of
lorasvet [3.4K]

Answer:

Rhonda is afraid of heights

Step-by-step explanation:

The Ferris Wheel is usually a ride that goes somewhat high. Emily and Teresa rode the Ferris Wheel, while Rhonda did not. Therefore, Rhonda is the one afraid of heights.

8 0
3 years ago
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Which expression does not have a solution of 12, if w = 4? <br> 3 w <br> w + 8 <br> 4 w <br> 16 - w
Snowcat [4.5K]

Answer:

8 w

Step-by-step explanation:

yes

4 0
3 years ago
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If f(x) = [x] - 5, what is (86)?
tatuchka [14]

Answer:

81

Step-by-step explanation:

I am assuming that you are asking what is [x] - 5 if f(86).

When you have this kind of question, what you do is to substitute the variable inside the parenthesis, so like what is says, f(x). If the question replaces the variable x with 86, that means you input the number into the equation.

So [x] - 5, if f(86).

Substitute:

86 - 5

81

4 0
3 years ago
Write an equation for a circle with a diameter that has end points at (-4,-1) and (-8,-9) round to the nearest tenth if necessar
Mazyrski [523]
 <span>1) distance formula; d = √(x2-x1)² +(y2-y1)² . d= √(-4-8)² +(-3-7)² = > d= 2√61 

diameter = 2*radius => 2√61 =2r => r =√61 => r² =61 

midpoint of the diameter is: 

Xm= -4-8 /2 -6 => -6
Ym = -1-9 /2 -5 => -5  center of the cirlce is at (-6,-5)

</span><span>general equation of a circle: (x-x1)² +(y-y1)² =r² with (x1,y1) being the center of the circle.</span><span>

equation:     (x+6)+(y+5)=61

</span>
6 0
3 years ago
Paul ran a 26 1/5 mile marathon in 2 3/4 hours. Write an inequality to describe the average speeds s of runners who were faster
Scilla [17]

Answer:

  • s > 9 29/55

Step-by-step explanation:

Paul ran a 26 1/5 mile marathon in 2 3/4 hours

<u>Paul's average speed was:</u>

  • distance/time =
  • 26 1/5 : 2 3/4 =
  • 131/5 : 11/4 =
  • 131/5 * 4/11 =
  • 524/55 =
  • 9 29/55 mph

<u>Inequality for the speed of faster runners:</u>

  • s > 9 29/55
6 0
3 years ago
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