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
brilliants [131]
3 years ago
9

RATHER THAN USE DECIMALS-convert it to cents..

Mathematics
1 answer:
stepan [7]3 years ago
5 0

Answer:

<h2>there are 22 dimes</h2><h2>there are 44 nickles</h2><h2 />

Step-by-step explanation:

D be dimes and N be nickles

2 nickles as dime

nickle = 5 cents and dime =10 cents

N=2D

0.10 D + 0.05 (N)=4.4 substitute N=2D

0.10 D +0.05(2D)=4.4

0.10D+0.10D=4.4

0.20 D=4.4

D=4.4/0.2 = 22

<h2>there are 22 dimes</h2>

N=2D

N=2(22)

N=44

<h2>there are 44 nickles</h2>

check : 0.10(22)+0.05(44)= 4.4 (correct)

You might be interested in
Find the slope of the line passing through the points (-9, 7) and (7, 7)
Lina20 [59]

Answer:

The slope is zero.

Step-by-step explanation:

8 0
3 years ago
Eight times the reciprocal of a number equals 2 times the reciprocal of 10. Find the number.
Marat540 [252]

Answer:x=40

Step-by-step explanation:

To find this

8 times the reciprocal of a number

We get

Assume the number is x

8×1/x=2×1/10

8/x=2/10

8/x=1/5

Cross multiply

x=40

5 0
3 years ago
What is 32/10 as a whole or mixed number in simplest form?
STatiana [176]
It would be 3 with be on the side and then 2/10
7 0
3 years ago
Polly's Polls asked 1850 second-year college students if they still had their original major. According to the colleges, 65% of
suter [353]

Answer:

The probability that Polly's Sample will give a result within 1% of the value 65% is 0.6424

Step-by-step explanation:

The variable that assigns the value 1 if a person had its original major and 0 otherwise is a Bernoulli variable with paramenter 0.65. Since she asked the question to 1850 people, then the number of students that will have their original major is a Binomial random variable with parameters n = 1850, p = 0.65.

Since the sample is large enough, we can use the Central Limit Theorem to approximate that random variable to a Normal random variable, which we will denote X.

The parameters of X are determined with the mean and standard deviation of the Binomal that we are approximating. The mean is np = 1850*0.65 = 1202.5, and the standard deviation is √np(1-p) = √(1202.5*0.35) = 20.5152.

We want to know the probability that X is between 0.64*1850 = 1184 and 0.66*1850 = 1221 (that is, the percentage is between 64 and 66). In order to calculate this, we standarize X so that we can work with a standard normal random variable W ≈ N(0,1). The standarization is obtained by substracting the mean from X and dividing the result by the standard deviation, in other words

W = \frac{X-\lambda}{\sigma} = \frac{X-1202.5}{20.5152}

The values of the cummulative function of the standard normal variable W, which we will denote \phi are tabulated and they can be found in the attached file.

Now, we are ready to compute the probability that X is between 1184 and 1221. Remember that, since the standard random variable is symmetric through 0, then \phi(-z) = 1-\phi(z) for each positive value z.

P(1184 < X < 1221) = P(\frac{1184-1202.5}{20.5152} < \frac{X-1202.5}{20.5152} < \frac{1221-1202.5}{20.5152})\\ = P(-0.9018 < W < 0.9018) = \phi(0.9018) - \phi(-0.9018) = \phi(0.9018)-(1-\phi(0.9018))\\ = 2\phi(0.9018)-1 = 2*0.8212-1 = 0.6424

Therefore, the probability that Polly's Sample will give a result within 1% of the value 65% is 0.6424.

Download pdf
4 0
3 years ago
Show the reflection of the given points.Locate the points of the reflection in their proper position around the x-axis
amid [387]

Answer: I believe this is it

4 0
2 years ago
Other questions:
  • What is the least number that 1/3 and 3/4 can be divided by
    13·1 answer
  • PLEASE ANSWER QUESTION #1-3
    15·2 answers
  • Help please only if u know wat u doing
    7·2 answers
  • 1 in 4 families now owes money on a
    6·1 answer
  • Consider the problem of utility over territory. Let’s start simply
    14·1 answer
  • The area of round table is 1.13 m^2 find the radius length of the table
    14·1 answer
  • Could you help me with this math, I don't know how to do it?
    5·2 answers
  • 9p^3 if p = 1/3 <br> Please help!
    12·1 answer
  • Ray went on a 792-mile biking trip. He rode his bike 6 hours each day at an average rate of 12 miles per hour How many days did
    7·1 answer
  • You record the number of sunny days out of a sample of 90 randomly selected days in city a and city b. in city a's sample there
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!