3 years ago

Can you answer questions 71, and 72?

Mathematics

1 answer:

antiseptic1488 [7]3 years ago

6 0

I think 71 is B
and 72 is D.

You might be interested in

Can I get help on 1 and 2

kvasek [131]

Answer:

1.the slope is 1/2 and the y int is -4

2.the slope is -3 and the y int is 6

6 0

3 years ago

The variable k represents a value in the set (-2,-4, -6, -8}.

Stells [14]

Answer:

Added thanks lol :)

Step-by-step explanation:

5 0

3 years ago

Can someone please help me with this?

klasskru [66]

Answer:

Step-by-step explanation:

7 0

3 years ago

Max has $2000: $1000 decreased in value exponentially at a rate of 0.5% annually

Sergio039 [100]

Answer:

$2147.36

Step-by-step explanation:

The first value can be modeled by ...

b1 = 1000·(1 -0.005)^t

After 10 years, that balance is ...

b1 = 1000·0.995^10 = 951.11

The second value can be modeled by ...

b2 = 1000·(1 +0.018/2)^(2t)

After 10 years, that balance is ...

b2 = 1000·1.009^20 = 1196.25

The total of the two investments after 10 years is ...

$951.11 +1196.25 = $2147.36

6 0

3 years ago

The speed of the current in a river is 6 mph. A ferry operator who works that part of the river is looking to

Morgarella [4.7K]

Answer:

9 mph

Step-by-step explanation:

Let he speed of the boat on the lake is x.

<u>Considering the speed of the current it will take him:</u>

22.5/(x + 6) + 22.5/(x - 6) = 9
2.5 / (x + 6) + 2.5 / (x - 6) = 1
2.5(x - 6 + x + 6) = (x + 6)(x - 6)
2.5*2x = x² - 36
x² - 5x - 36 = 0
x = (5 ± √(5² + 4*36))/2 = (5 ± 13) / 2
x = (5 + 13)/2 = 9 mph (negative root is discarded as the speed should be positive)

7 0

2 years ago