3 years ago

What number, c, completes the square? X^2 + 8x + c

Mathematics

1 answer:

barxatty [35]3 years ago

4 0

Answer:

Step-by-step explanation:

If you divide 8 by 2 it is 4 and 4 times itself is 16. Because to complete the square you find half of b and square it for c.

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You will need to flip the inequality sign when you subtract 4 from each side in the inequality y/-2 + 4 < 9.

Talja [164]

Answer:

-1/2y+4<9

-1/2y+4-4<9-4

-1/2<5

(2/-1)*(-1/2y)<(2/-1)*(5)

y>-10

answer is y>-10

Step-by-step explanation:

5 0

3 years ago

Find the value of t in the diagram

12345 [234]

In a trapezoid, with bases $b$ and $B$ and height $h$ , the area is given by

$A = \frac{(B+b)h}{2}$

In your case:

$B = BC = 3t$

$b = AD = t$

$h = AB = t$

so, the formula becomes

$A = \frac{(3t+t)t}{2} = \frac{4t^2}{2} = 2t^2$

Since the area is $50 \text{cm}^2$ , we have

$2t^2 = 50 \iff t^2 = 25 \iff t = 5$

5 0

3 years ago

Read 2 more answers

Graph the function with the given domain. Then identify the range of the function. y = -6; domain: x ≥ 5

hjlf

Answer: Plot a point at (-6,5) then just go start up. That is your graph

Step-by-step explanation:

Range is left to right so that means that the only point on the x axsis you can plot is -6 and the domain is up and down so you cant plot a point below 5

8 0

3 years ago

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11. Two cyclists start biking from a trail’s start 3 hours apart. The second cyclist travels at 10 miles per hour and starts 3 h

Margarita [4]

Answer:

<em>4.5 hours</em>

Step-by-step explanation:

distance = velocity × time

8 0

3 years ago

Este plzzz.

Yuki888 [10]

Answer:

La superficie es 194.94cm cuadrados

Step-by-step explanation:

¡Espero que esto ayude!

¡Por favor marque el más inteligente!

3 0

3 years ago