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Shkiper50 [21]
3 years ago
15

Please help explain the steps

Mathematics
1 answer:
Gennadij [26K]3 years ago
3 0

Step-by-step explanation:

3a^2+24a+45=0

×3/3( first ×3)

9a^2+24(3a)+135=0

(3a+15)(3a+9)=0

now /3

3(a+5)(a+3)

a=-5✓

a=-3✓

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What is the best answer to this question, y=3×+6?<br> What's the y intercept?
Alchen [17]
Since the equation is in slope-intercept form, we know from the definition of slope-intercept form that 6 is the y-intercept. 
5 0
3 years ago
The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 peopl
laiz [17]

Answer: The waiting time will be 32 minutes when 240 people in line.

Step-by-step explanation:

Let us assume that the waiting time is directly proportional to the number of people in the queue.

Equation of direct proportion between variables x and y :  \dfrac{x_1}{y_1}=\dfrac{x_2}{y_2}

Put x_1=20,\ y_1=150,\ y_2=150  to find  x_2.

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Hence, the waiting time will be 32 minutes when 240 people in line.

3 0
3 years ago
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HELP ASAP. a kite has diagonals of 18 inches and 21 inches as seen below. what is the perimeter of the kite
timofeeve [1]

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8 0
3 years ago
What makes a graph a proportional relationship?
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Step-by-step explanation:


8 0
3 years ago
The sum of two consecutive numbers is 73. what are the numbers?
brilliants [131]
Hey there!

2x+1=73.
2x=72.
x=36<span>.
</span>
So the 2 consecutive numbers are 72 and 36!


Hope this helps! :)
6 0
3 years ago
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