1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elina [12.6K]
3 years ago
6

withdraws ​$ from bank account once each day for days. What integer represents the change in the amount in the​ account? Use pen

cil and paper. Find the integer that would represent the change in the amount in the account if deposits ​$ into bank account once each day for days. Explain the difference between the integer for the withdrawals and the integer for the deposits.
Mathematics
1 answer:
REY [17]3 years ago
4 0

Answer:

a. Sam withdraws $11 from his account. That means his account balance reduces by $11 so the integer is -$11.

He does this 4 times so;

= 4 * -11

= -$44

b. He then deposits $11 once every day for 4 days.

= 4 * 11

= $44

c. The integer for withdrawals is a negative figure to show that the balance was decreasing. The Integer for deposits is positive to show that the balance was increasing.

You might be interested in
Michelle spent $32 on hot dogs and hamburgers. Hot dogs were $5 and hamburgers $6.if she bought a total of 6 items .how many of
galben [10]
The answer is B 4 hot dogs = $20 and two hamburgers = $12 so 20 plus 12 equals 32 so the answer is B
5 0
3 years ago
Read 2 more answers
Lightbulbs of a certain type are advertised as having an average lifetime of 750 hours. The price of these bulbs is very favorab
Katyanochek1 [597]

Answer:

(a) Customer will not purchase the light bulbs at significance level of 0.05

(b) Customer will purchase the light bulbs at significance level of 0.01 .

Step-by-step explanation:

We are given that Light bulbs of a certain type are advertised as having an average lifetime of 750 hours. A random sample of 50 bulbs was selected,  and the following information obtained:

Average lifetime = 738.44 hours and a standard deviation of lifetimes = 38.2 hours.

Let Null hypothesis, H_0 : \mu = 750 {means that the true average lifetime is same as what is advertised}

Alternate Hypothesis, H_1 : \mu < 750 {means that the true average lifetime is smaller than what is advertised}

Now, the test statistics is given by;

       T.S. = \frac{Xbar-\mu}{\frac{s}{\sqrt{n} } } ~ t_n_-_1

where, X bar = sample mean = 738.44 hours

               s  = sample standard deviation = 38.2 hours

               n = sample size = 50

So, test statistics = \frac{738.44-750}{\frac{38.2}{\sqrt{50} } } ~ t_4_9

                            = -2.14

(a) Now, at 5% significance level, t table gives critical value of -1.6768 at 49 degree of freedom. Since our test statistics is less than the critical value of t, so which means our test statistics will lie in the rejection region and we have sufficient evidence to reject null hypothesis.

Therefore, we conclude that the true average lifetime is smaller than what is advertised and so consumer will not purchase the light bulbs.

(b) Now, at 1% significance level, t table gives critical value of -2.405 at 49 degree of freedom. Since our test statistics is higher than the critical value of t, so which means our test statistics will not lie in the rejection region and we have insufficient evidence to reject null hypothesis.

Therefore, we conclude that the true average lifetime is same as what it has been advertised and so consumer will purchase the light bulbs.

6 0
3 years ago
A high speed train travels a distance of 503 km in 3 hours.
tensa zangetsu [6.8K]

The average speed, in km/minute, of the train is 2.79 km/minute

<h3>Calculating average speed </h3>

From the question, we are to calculate the average speed in km/minute

From the given information,

Distance travelled = 503 km

Time taken = 3 hours = 3 × 60 minutes = 180 minutes

Using the average speed formula,

Average speed = Distance / Time

∴ Average speed of the train = 503 / 180

Average speed of the train = 2.79 km/minute

Hence, the average speed, in km/minute, of the train is 2.79 km/minute

Learn more on Calculating average speed here: brainly.com/question/12025128

#SPJ1

3 0
1 year ago
Solve for r<br> 2r = 7/10
deff fn [24]

Answer:

7/20

Step-by-step explanation:

given,

2r = 7/10

r= 7/10*1/2

r= 7/20

6 0
3 years ago
Kylie has 14 polished stones. Her friend gives her 6 more stones. Write an expression to match the words
Elis [28]
An expression is like an equation, but without an equal sign.

Therefore, you could say...

14 stones + 6 stones

or just...

14 + 6

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the equation of a line passing through the points 6,3 and -4,3 so y=?
    8·1 answer
  • WILL MARK BRAINIEST!!! 25 POINTS!!! PLZ HELP ME! Determine the equivalent system for the given system of equations.
    7·1 answer
  • Which mixed number and improper fraction are represented by the point on the number line?
    14·1 answer
  • Help with algebra pleaseee
    13·2 answers
  • A portion of the Quadratic Formula proof is shown. Fill in the missing reason.
    5·1 answer
  • 6. The graphs of y, = 0.2(25X-40) and y2 = 4(0.5x+1.75) are shown on the coordinate grid.
    7·1 answer
  • Help?- Plot and connect the points A (-4, 4), B (-1, 1), C (-6, 1), and find the length of BC.
    9·2 answers
  • Jasmine cooked 1 5/6 kg of rice. Alice cooked 5/8 kg more than Jasmine. a. How many kg of rice did Alice cook? b. How many kg of
    14·1 answer
  • HELP ME PLEASEEEEEEEEEE
    6·1 answer
  • Please help me GIVING AWAY ALL MY POINTS​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!