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Alex787 [66]
3 years ago
9

A piggy bank contains 35 coins.

Mathematics
1 answer:
stiks02 [169]3 years ago
8 0

Answer:

See below.

Step-by-step explanation:

Let d = number of dimes. Let q = number of quarters.

d + q = 35

A dime is worth 10 cents, or $0.1; d dimes are worth 0.1d.

A quarter is worth 25 cents, or $0.25; q quarters are worth 0.25q.

0.1d + 0.25q = 4.9

The system of equation is

d + q = 35

0.1d + 0.25q = 4.9

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3 years ago
For students who first enrolled in two year public institutions in a recent​ semester, the proportion who earned a​ bachelor's d
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Answer:

Null hypothesis =  H_0:p=0.395

Alternate hypothesis =H_a:p>0.395

Step-by-step explanation:

Given : In a recent​ semester, the proportion who earned a​ bachelor's degree within six years was 0.395.

The president of a certain college believes that the proportion of students who enroll in her institution have a higher completion rate.

To Find : Determine the null and alternative hypotheses.

Solution:

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Alternate hypothesis =H_a:p>0.395

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Suppose that the cost of drilling x feet for an oil well is C=f(x) dollars. a) What are the units of f'(x)? b) In practical term
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△QRS is rotated about point P to △Q′R′S′ .
Sedbober [7]

Answer:

As Given △QRS is rotated about point P to △Q′R′S′ .

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Out of the options given

→The corresponding lengths, from the point of rotation, between the pre-image and the image are preserved.

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are true.



4 0
3 years ago
the school decides to raise prices of lunches. The old price for a lunch was $0.75 . Seth buys the school lunch 5 days a week. w
Elina [12.6K]

Answer:

5*0.75= 3.75 he'll spend $3.75 on lunch every week.


Step-by-step explanation:


5 0
3 years ago
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