I need help getting the equation

Mathematics

1 answer:

tekilochka [14]2 years ago

8 0

Answer:

2.5v + 85

v = 12

Step-by-step explanation:

115 - 85 = 30

30 / 2.5 = 12 (He needs to go 12 times)

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Help, please and thank you

erma4kov [3.2K]

Answer:

48%

Step-by-step explanation:

The conditional probability definition applies.

P(med | cold) = P(med & cold) / P(cold)

The probabilities are the table numbers divided by the total of all numbers in the table (100). Since that dividend is the same for all, we can basically ignore it and just use the table numbers.

P(med | cold) = (12)/(8+12+5) = 12/25 = 48/100

P(med | cold) = 48%

8 0

2 years ago

A student has a savings account earning 3% simple interest. She must pay $1900 for first-semester tuition by September 1 and $19

Anastaziya [24]

Answer:

$3781.19

Step-by-step explanation:

Let us assume that the student has to earn $(1900 + x) by September 1 so that he can pay the $1900 tuition fee by September 1 and the remaining $x will grow at 3% simple interest to make him able to pay another tuition fee of $1900 by January 1.

So, we can write $x( 1 + \frac{4 \times 3}{12 \times 100}) = 1900$