F(x)=(x+4) 2 −25 smaller x = larger x = NEED THIS ASAP

Mathematics

1 answer:

miss Akunina [59]3 years ago

3 0

f(x)=(x+4) ^2 −25

to solve set equal to zero

0 =(x+4) ^2 −25

add 25 to each side

25 = (x+4) ^2

take the square root of each side

square root (25) =(x+4)

+- 5 = (x+4)

5 = x+4 -5 = x+4

subtract 4 from each side

1 =x -9 =x

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e-lub [12.9K]

Answer:

Ten times as 8 hundreds is 8 thousands.

Step-by-step explanation:

Ten times as 8 hundreds is 8 thousands.

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6 0

3 years ago

Read 2 more answers

7.33. Tom can paint Mr. Thatcher's fence in 6 hours, while Huck can paint Mr. Thatcher's fence in 5 hours. If they work together

Alik [6]

Answer:

<u>It takes them 30/11 hours to paint them together.</u>

Step-by-step explanation:

This is known as a work problem (rate * time = work). We are given the individual times for Tom and Huck (6 hours and 5 hours respectively). However, we are not given the rates at which they can paint the fence. Since we know that the total work that they both do individually is 1 (there is 1 job to do), we can calculate the rates at which Tom and Huck paint the fence on their own:

$Tom: R_{T}*6=1\\Huck: R_{H}*5=1$

We can isolate R{t} and R{h} to find the rates at which Tom and Huck work:

$Tom: R_{T}=\frac{1}{6}\\Huck: R_{H}=\frac{1}{5}$

Now, we can calculate the time it takes for Tom and Huck to work together using the same formula (the combined rate is just the sum of Tom and Huck's individual rates):

$(\frac{1}{6} +\frac{1}{5})*T=1\\\\T*(11/30)=1 , T = 30/11$