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Sonbull [250]
3 years ago
8

Evaluate the square root of x^2 - 5x when x = 7. Round your answer to the nearest hundredth

Mathematics
2 answers:
Troyanec [42]3 years ago
5 0
X^2-5x, given x=7,

(7)^2-5(7)=14

sqrt(14)=3.74
sesenic [268]3 years ago
3 0
OK, <span>72</span>−<span><span>(5)</span><span>(7)</span></span><span>=<span>14
Its 14 because you plug in the sevens then you get 49-35 which is 14. Hope this answer helps you and mark as brainliest! :)</span></span>
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The slope of the line below is -2. Write the point-slope equation of the line
kipiarov [429]

For this case we have that by definition, the equation of a line of the slope-intersection form is given by:

y-y_{0}=m(x-x_{0})

Where:

m: It is the slope of the line

(x_ {0}, y_ {0}): It is a point through which the line passes.

We have to:

m = -2

Thus, the equation is of the form:

y-y_{0}=-2(x-x_{0})

We substitute the point (x_{0}, y_{0}) :( 4, -6)

y-(-6)=-2(x-4)\\y+6=-2(x-4)

Finally, the equation is:

y+6=-2(x-4)

Answer:

y = -2x + 2

y+6=-2(x-4)

6 0
3 years ago
Suppose a normal distribution has a mean of 62 and a standard deviation of
lutik1710 [3]

Answer:

62.5%

Step-by-step explanation:

(56 - 62) / 4 = -1.5 z score = 0.0668

(64 - 62) / 4 = 0.5 z score = 0.6915

0.6915 - 0.0668 = 0.6247

Rounded this becomes 62.5%

7 0
3 years ago
Multiply or divide SHOW YOUR WORK!!! 5x+10 over x +2 times 2x over 4x-10
Vaselesa [24]
(5x + 10) / (x + 2)  *  2x / (4x - 10)
= 5(x + 2) / (x + 2) * 2x / 2 (2x - 5)
 = 5 *2 = 2x / (2x - 5)
 = 10 * (2x - 5) = 2x
 = 20x - 50 = 2x
 = 20x - 2x = 50
 = x = 50 / 18

In short, Your Answer would be 25/9

Hope this helps!
6 0
4 years ago
Solve for b: A= (h(a+b))/2
tresset_1 [31]

A= (h(a+b))/2

multiply each side by 2

2A =  (h(a+b))

divide each side by h

2A/h = a+b

subtract a from each side

2A/h -a = b

6 0
4 years ago
Find the x - and y -intercepts of the graph of the linear equation -4x+8y=-16 .
Sav [38]

Answer:

  • x: (4, 0)
  • y: (0, -2)

Step-by-step explanation:

To find the x-intercept, set y=0 and solve for x. That will mean dividing by the coefficient of x:

  -4x +0 = -16

  x = -16/-4 = 4 . . . . the x-intercept

__

To find the y-intercept, set x=0 and solve for y. That will mean dividing by the coefficient of y:

  0 +8y = -16

  y = -16/8 = -2 . . . . the y-intercept

__

The x- and y-intercepts are (4, 0) and (0, -2), respectively.

_____

<em>Additional comment</em>

The standard form equation of a line, ax+by=c, is especially nice for finding the intercepts, as they are always (c/a, 0) and (0, c/b). Once you see this, you can do a question like this in your head.

6 0
3 years ago
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