3 years ago

Solve x2 + x - 72 = 0

Mathematics

1 answer:

denis23 [38]3 years ago

5 0

The correct answer is

x = 9, -8

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9 + b = -12<br> q+ (-9) = 12

sertanlavr [38]

Subtract 9 from both sides

b = -12 - 9

simplify -12 - 9

Answer: b = -21

9 + -21 = -12 is true.

simplify brackets

simplify q + -9 to q - 9

add 9 to both sides

simplify 12 + 9 to 21

q = 21

21 + -9 = 12 is true.

4 0

3 years ago

Convert 7-11 to a percent. round to the nearest hundredth

n200080 [17]

7/11 is 0.006 percent.

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3 years ago

Its my birthday today= Free points!

xz_007 [3.2K]

Answer:

happy birthday

Step-by-step explanation:

thank you

7 0

3 years ago

Read 2 more answers

when a cannonball is fired, the equation of its pathway can be modeled by h=-16t squared + 128t. find the time it will take for

Rashid [163]

At the time the cannonball reaches the ground, the vertical height of the cannonball from the ground is 0, i.e. h = 0.

Thus, the time it will take the cannonball to reach the ground is given by

$-16t^2+128t=0 \\ \\ \Rightarrow t(-16t+128)=0 \\ \\ \Rightarrow t=0\ or\ -16t+128=0 \\ \\ \Rightarrow16t=128 \\ \\ \Rightarrow t= \frac{128}{16} =8$

Therefore, it will take the cannonball 8 seconds to reach the ground.

5 0

3 years ago

A monster can eat 36 cookies in 9 minuets.How many cookies can the monster eat in 12 minuets?

Vaselesa [24]

a monster can eat 48 cookies in 12 minutes me thinks

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3 years ago