What is the recursive formula for 7,0,-7,-14

Mathematics

1 answer:

Olin [163]3 years ago

5 0

Answer:

the next number would be -21

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Easy i guess but i don’t understand

s344n2d4d5 [400]

Answer:

y = 1500 - 200x

Step-by-step explanation:

y would be the amount of water remaining in the pool

x would be the amount of hours that have passed.

So the only change I made was to convert 400 every 2 hrs to 200 every hour.

makes sense?

4 0

4 years ago

Two families visited an amusement park. The first family bought 2 hot dogs and 3 bottles of waters, which totaled $18. The secon

Ghella [55]

Answer:

$6.00

Step-by-step explanation:

To solve this problem, we have to construct two separate equations for each family, and then use any of the methods for solving simultaneous equations.

Let's consider h to represent the cost of 1 hot dog, and w to mean the cost of 1 water bottle.

• For the first family:

$2h + 3w = 18$

We can rearrange the equation to make w the subject:

⇒ $3w = 18 - 2h$

⇒ $w = \frac{18 - 2h}{3}$

• For the second family:

$4h + 2w = 28$

Since we have previously obtained an expression for w in terms of h, we can substitute that expression for w in the above equation, and then solve for h:

⇒ $4h + 2(\frac{18 - 2h}{3}) = 28$