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madreJ [45]
3 years ago
14

Can you explain it and help me out please​

Mathematics
1 answer:
Artyom0805 [142]3 years ago
5 0

Answer:

b=19

Step-by-step explanation:

2x(3x+5)+3(3x+5)= (3x+5)(2x+3)= 6x²+ 9x+10x+15=6x²+19x +15

6x² + 19x +15 = ax²+bx+c

a=6, b=19, c=15

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Step-by-step explanation:

cos θ = 3 / AB

When θ = 28°:

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AB = 3 / cos 28°

AB ≈ 3.4

When AB = 5.2:

cos θ = 3 / 5.2

θ = cos⁻¹(3 / 5.2)

θ ≈ 54.8°

3 0
3 years ago
The length of a rectangular photograph is 7 inches more than the width. If the area is 78 square inches, what are the
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Step-by-step explanation:

because it is

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3 years ago
A machine in a laboratory is set to steadily increase the temperature inside. The temperature in degrees Celsius inside the mach
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Answer:

1) f(3) means the temperature after 3 seconds

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6 0
3 years ago
Read 2 more answers
Hours worked / pay 2/$15.00 4/$30.00 6/$45.00 8/$60.00 A/p=7.50h B/ p=15h C/ p=h+15 D/h=7.50p
alex41 [277]
Working for 2 hours pays $15.
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Divide each amount of pay by its hours, and all are $7.50 per hour.
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p = 7.50h
7 0
3 years ago
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https://brainly.com/question/23910386 go here and make it blow up share this to and who ever dose it gets brainlest so you have
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Answer:

lol ok

have a good day :)

Step-by-step explanation:

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