Mathematics, 15.01.2020 01:31 Anaaguayo954

Atennis coach took his team out for lunch and bought 8 hamburgers and 5 fries for $24. the players were still hungry so the coach bought six more hamburgers and two more fries for $16.60. find the cost of each.

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Answer from: 20Tiglashou

The cost of 1 hamburger is $ 2.5 and cost of 1 fries is $ 0.8

Solution:

Let "f" be the cost of 1 fries

Let "h" be the cost of 1 hamburger

Given that, tennis coach took his team out for lunch and bought 8 hamburgers and 5 fries for $24

8 x cost of 1 hamburger + 5 x cost of 1 fries = 24

$8 \times h + 5 \times f = 24$

8h + 5f = 24 -------- eqn 1

The players were still hungry so the coach bought six more hamburgers and two more fries for $16.60

6 x cost of 1 hamburger + 2 x cost of 1 fries = 16.60

$6 \times h + 2 \times f = 16.60$

6h + 2f = 16.60 ------ eqn 2

Let us solve eqn 1 and eqn 2

Multiply eqn 1 by 2

16h + 10f = 48 ------ eqn 3

Multiply eqn 2 by 5

30h + 10f = 83 -------- eqn 4

Subtract eqn 3 from eqn 4

30h + 10f = 83

16h + 10f = 48

( - ) ----------------------

14h = 35

h = 2.5

Substitute h = 2.5 in eqn 1

8(2.5) + 5f = 24

20 + 5f = 24

5f = 4

f = 0.8

Thus cost of 1 hamburger is $ 2.5 and cost of 1 fries is $ 0.8

Answer from: Quest

step-by-step explanation:

i found the life tables for the year 2012.

life table of males at age 30. probability of dying between ages x and x+1

total population:

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old.

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497

Answer from: Quest

Sorry i meant b in the other question
Looking at def, which statement below is true? i think the answer is b

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