All categories

4 years ago

Which number should be added to both sides of the equation to complete the square x^2-10x=7

Mathematics

1 answer:

mixer [17]4 years ago

5 0

Answer:

Step-by-step explanation:

The number that needs to be added is the square of half the x-coefficient:

(-10/2)^2 = 25

_____

Adding that gives ...

(x -5)^2 = 32

x = 5 ± 4√2

You might be interested in

Find the absolute maximum and minimum of the function on the given domain. f (x comma y )equals 8 x squared plus 7 y squared on

pickupchik [31]

Answer:

the maximum value is 7

The minimum value is 0

Step-by-step explanation:

Step One : Interpret the question

The above question can be written like

The Equation

$f(x,y) = 8x^2 +7y^2$

The diagram of the triangular plate and the bounded lines is shown on the first uploaded image

From the diagram $f(0,0) = 8(0)^2 +7(0)^2 =0$

$f(1,0) =8(1)^2 + 7(0)^2 = 8$

$f(0,1) =8(0)^2 + 7(1)^2 = 7$

Partial differentiation of the equation w.r.x

$A =\frac{\delta f}{\delta x } = 16x$

Partial differentiation of the equation w.r.y

$B =\frac{\delta f}{\delta y } = 14y$

Looking at the diagram the maximum value is 7 i.e at (x , y) = (0,1)

The minimum value is 0 i.e (x , y) = (0,0)

3 0

3 years ago

Find the percent error of the measurement 4 cm. 4% 1% 12.5% 40%

ahrayia [7]

Answer:

C 12.5%

Step-by-step explanation:

I did this one

5 0

3 years ago

Read 2 more answers

Help pls the first questions option is 25,40,75 And the next option is 40,75,140

Pachacha [2.7K]

Answer:

C is 40 and D is 75

Step-by-step explanation:

look at the angle

5 0

3 years ago

Cesar can hike at 3 1/3 miles in 2 hours. Bella can hike 1/3 mile in 1/4 hour.

Svetlanka [38]

Answer:

Cesar goes 1 2\3 miles in an hour

Bella goes 1 1\3 miles in an hour

Cesar is hiking faster

Step-by-step explanation:

Cesar: you half 3 1\3 because you need to half the time of 2 hours to determine how far he goes in an hour. 3 1\3 halved is 1 2\3

Bella: You must multiply 1\3 4 times in order to get the 1\4 hour to a whole hour. 1\3 4 times is 1 1\3.

Speed: Cesar goes 1 2\3 mph while Bella goes only 1 1\3 therefore Cesar is going faster

4 0

3 years ago

Read 2 more answers

Assume that the mean length of a human pregnancy is 269 days. If 95% of all human pregnancies last between 249 and 289 days, w

o-na [289]

Answer:93% not sure

Step-by-step explanation:

7 0

3 years ago