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Monica [59]
2 years ago
5

Regular exercise can help a person lower their resting heart rate. Suppose an individual's resting heart rate, in beats per minu

te, is modeled by the function f(x) = –0.1x 3 + 0.6x 2 + 85 after x weeks of regular exercise. How many weeks of exercise are necessary to lower the individual's resting heart rate below 70 beats per minute?
Mathematics
1 answer:
sveta [45]2 years ago
4 0

Answer:

pienso que el ejercicio no debería de regularse por nada si no por tu condición física ama lo que miras en el espejo diariamente pero promete a esa persona que se puede ver mejor. y cuando lo haces con amor a ti mismo y también a tu pareja por qué no te vas a sentir espectacular.

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Ashley is making $500 a week at her job. She receives a 20% pay raise. A year later she gets a 5% pay cut. How much does she mak
notsponge [240]

Answer:

Assuming Ashley didn't​ take any week off. Ashley earning in the first year:

500*52=$26000

She earns the second year:

26000 * 1.2 = $31200

She spent 5%

31200 * 0.05 = $1560

The remaining yearly earning:

31200 - 1560 = $29640

Weekly earning:

29640 ÷ 52 = $570


Read more on Brainly.com - brainly.com/question/3450376#readmore



8 0
2 years ago
Michaela pays her cell phone service provider $49.95 per month for 500 minutes. any additional minutes used cost $0.15 each. in
lilavasa [31]
75 extra minutes because $61.20-$49.95=$11.25 and $11.25/$0.15=75.
7 0
2 years ago
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A local cable company claims that the proportion of people who have Internet access is less than 63%. To test this claim, a rand
MaRussiya [10]

Answer:

Step-by-step explanation:

For the null hypothesis,

H0 : p = 0.63

For the alternative hypothesis,

Ha : p < 0.63

This is a left tailed test

Considering the population proportion, probability of success, p = 0.63

q = probability of failure = 1 - p

q = 1 - 0.63 = 0.37

Considering the sample,

Sample proportion, P = x/n

Where

x = number of success = 478

n = number of samples = 800

P = 478/800 = 0.6

We would determine the test statistic which is the z score

z = (P - p)/√pq/n

z = (0.6 - 0.63)/√(0.63 × 0.37)/800 = - 1.76

From the normal distribution table, the area below the test z score in the left tail 0.039

Thus

p = 0.039

7 0
2 years ago
Will likes two brands of healthy breakfast cereal. In Superfiber cereal, there are 5 grams of fiber in one cup. In Fiber Oats ce
Katen [24]

Let x  <u>represent</u> the <u>number of cups</u> of Superfiber Will ate this week and let y  represent the number cups of Fiber Oats he ate this week.

1. If in Superfiber cereal, there are 5 grams of fiber in one cup, then in x cups there are 5\cdot x=5x grams of fiber.

2. If in Fiber Oats cereal, there are 4 grams of fiber in one cup, then in y cups there are 4\cdot y=4y grams of fiber.

3. The total amount of fiber Will ate is 5x+4y grams.

4. This week Will ate at least 30 grams of fiber. Then

5x+4y\ge 30.

Answer: correct choice is A.


7 0
2 years ago
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a basketball player made 27 free throws in her last 45 tries. what is the experimental probability that she will make her next f
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Hey mark me brainlest but ur answer is 27/45


Bess ur day.
8 0
2 years ago
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