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3 years ago

12

Find the domain in interval notation Y=x^2-2x-5

1 answer:

lara [203]3 years ago

4 0

(Positive infinity and negative infinity),{x|xER}

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Write the absolute value inequality in the form Ix−bIc that has the solution set x≤−9 or x≥−5.

Valentin [98]

Answer:

$\large\boxed{|x+7|\geq2}$

Step-by-step explanation:

Look at the picture.

$|x-a|\geq b\\\\a=\dfrac{-9+(-5)}{2}=\dfrac{-14}{2}=-7\\\\b=-9-(-7)=-9+7=-2\\b=-5-(-7)=-5+7=2\\\\|x-(-7)|\geq2\\\\|x+7|\geq2\\\\Check:\\\\|x+7|\geq2\iff x+7\geq2\ \vee\ x+7\leq-2\qquad\text{subtract 7 from both sides}\\\\x+7-7\geq2-7\ \vee\ x+7-7\leq-2-7\\\\x\geq-5\ \vee\ x\leq-9\qquad CORRECT\ :)$

7 0

4 years ago

Read 2 more answers

What is 0.35 as a mixed number or fraction is simplist form

Lina20 [59]

0.35 = 35/100.

Can be simplified. Divide by 5.

= 7/20

3 0

3 years ago

I'll put this as random but you can answer it... <br> ill give yall 10 points if yall do it!

Arturiano [62]

Answer: 4 gallons = 15 liters, 8 liters = 2 gallons, 12.5 liters = 3 gallons, and 6 gallons = 23 liters.

4 0

2 years ago

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Tina practiced piano for 15 hours last month and 45 hours this month. Use multiplication to write a statement comparing the hour

Pani-rosa [81]

Answer: Hours by Tina practiced this month is 3 times the hours she practiced last month such that 15 x 3 =45 hours.

Step-by-step explanation:

Given : Duration of Tina practiced piano last month= 15 hours

Duration of Tina practiced piano this month= 45 hours

We can see 45 is a multiple of 15 such that $45=15\times3$

Therefore, Hours by Tina practiced this month is 3 times the hours she practiced last month such that 15 x 3= 45 hours.

6 0

3 years ago

Read 2 more answers

Please give the the answer and dont send a file

Dahasolnce [82]

Answer:

-117

Step-by-step explanation:

x = 106 x 4 - (99+120+103+111+108)

x = 424 - 541

x = -117

Hope that helps!

7 0

3 years ago