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olganol [36]
2 years ago
14

A total of 22 dimes and nickels have a value of $1.90. If d represents the number of dimes and n represents the number of nickel

s, which system of equations models this situation?
theres an image

Mathematics
1 answer:
Eva8 [605]2 years ago
7 0

Answer:

d + n = 22 and 0.1d + 0.05n = 1.9

Step-by-step explanation:

Let d represents the number of dimes and n represents the number of nickel.

Total of dimes and nickels = 22

Therefore, d + n = 22

1 dime = 10 cents = 0.1

1 nickel = 5 cents = 0.05

Value of 22 dimes and nickel = $1.90

So, 0.1d + 0.05n = 1.9

Hence, d + n = 22 and 0.1d + 0.05n = 1.9 models the given situation.

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In one school, half of all students who like math like science as well. Also, in that school, a third of all students who like s
Nimfa-mama [501]

Answer:

2/3

Step-by-step explanation:

If we have 'x' students who like math and 'y' students that like science, we can formulate that:

Half of x likes math and science, and also one third of y likes math and science, so:

(1/2) * x = (1/3) * y

x / y = (1/3) / (1/2)

x / y = (1/3) * 2 = 2/3

So the ratio of the number of students who like math to the number of students who like science is 2/3

3 0
3 years ago
Read 2 more answers
2. explain what is meant by (distribution) transparency and give examples of different types of transparency.
konstantin123 [22]

The phenomena of hiding distribution characteristics in a system from applications and users is known as distribution transparency. Access transparency, location transparency are some examples.

<h3>Define the term (distribution) transparency?</h3>

Distributed databases have the attribute of distribution transparency, which keeps consumers from knowing the internal workings of the distribution.

  • The DDBMS designer has the option of replicating table fragments, storing them at several locations, and fragmenting tables.
  • There are numerous distribution methods. Systems that need a wide range of management systems to pinpoint the source of resources, a product, or a service delivery process from the end user.
  • Typically, the distributor, seller, or producer is responsible for maintaining transparency to track the many points at which resources, goods, or services are delivered.
  • Accounting supplied by any intermediary company in the product, service, or resource flow is, of course, the usual approach to determine the degrees of value added through distribution management.

Thus, access transparency, location transparency are some examples of the (distribution) transparency.

To know more about the transparency, here

brainly.com/question/14590546

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5 0
1 year ago
Sally had 7 stars and eric had 186 stars .he gave 27 to sally how many does he have left?
Ilya [14]
To solve this you can use subtraction
186-27=159 (for the amount Eric gave away)
So Eric has 159 stars left!
Hope this helped!!
3 0
2 years ago
Read 2 more answers
11) f(x) = -x + 4x3 – 2x + 2
daser333 [38]

Answer:

Step-by-step explanation:

3 0
3 years ago
When plotting sample statistics on a control chart, 99.7% of the sample statistic values are expected to fall within plus/minus
Blababa [14]

Answer:

By the Empirical Rule, \pm 3\sigma

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

The symbol of a standard deviation is \sigma. So

When plotting sample statistics on a control chart, 99.7% of the sample statistic values are expected to fall within plus/minus how many sigma?

By the Empirical Rule, \pm 3\sigma

5 0
3 years ago
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