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PolarNik [594]
2 years ago
12

39. State the equation for the line described below.

Mathematics
1 answer:
devlian [24]2 years ago
8 0

Answer:

Step-by-step explanation:

39). y = -\frac{7}{8} x + 3

40). m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }

y - y_{1} = m( x - x_{1} )

(- 7, 5)

( - 12, 4)

m = ( 4 - 5 ) / ( - 12 + 7) = 1/5

y - 5 = (1/5)(x + 7) ⇒ y = \frac{1}{5} x + 6.4

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there is $9360 worth of invertory left as of december 31

Step-by-step explanation:

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3 years ago
Simplify the expression:<br> 5 + 9f - 10 + 5
nirvana33 [79]

Answer:

You only have to sort (numbers with numbers and variables with variables) then do the operations (+/-).

Step-by-step explanation:

5 + 9f - 10 + 5 \\  - 5 + 9f + 5 \\ 0 + 9f \\ 9f

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2 years ago
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The garden hose at Andre's house can fill a 5-gallon bucket in 2 minutes. The hose at his next-door neighbor's house can fill a
mina [271]

Answer:

The time it would take them to fill 750 gallons

= 200 minutes or 3 hours 20 minutes

Step-by-step explanation:

Step 1 :

We calculate the rate at which the hoses fill for Andre and His neighbor

For Andre

The garden hose at Andre's house can fill a 5-gallon bucket in 2 minutes.

The rate is calculated as:

5 gallon/2 minutes

= 2.5 gallons/minute

For His neighbor

The hose at his next-door neighbor's house can fill a 10-gallon bucket in 8

minutes.

= 10 gallon/8 minutes

= 1.25 gallon/minute

Step 2

Hence:

If they use both their garden hoses at the same time, and the hoses continue working at the same rate, the sum of their rate =

2.5 + 1.25 = 3.75 gallons per minute.

Step 3

The time it would take them to fill 750 gallons =

750 gallons ÷ 3.75 gallons per minute

= 200 minutes

= 3 hours 20 minutes

6 0
2 years ago
It is the morning of the sandcastle-building competition at the beach. Dory has been looking forward to this event for months. A
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3 years ago
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Of the 15 year olds at karate school 8 have black belts in 20 had Brown belts among 16 year olds 10 have black belts in 17 have
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Answer:

16 year olds had the higher ratio of black belts to brown belts.

Step-by-step explanation:

15 year olds: 8/28 students had black belts

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16 year olds: 10/27 students had bald belts

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5 0
3 years ago
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