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Hatshy [7]
3 years ago
7

5 points free, good job

Mathematics
1 answer:
Vilka [71]3 years ago
4 0

Answer:

ok, what's the question?

Step-by-step explanation:

You might be interested in
Please help fast!! Katrina has $3.60 worth of nickels and dimes. She has 46 coins in total. How many nickels and dimes does she
Igoryamba

Answer:

20 nickels and 26 dimes

Step-by-step explanation:

  • She has $3.60 in nickels and dimes
  • a nickel is $0.05 and a dime is $0.10
  • let n be the number of nickels and d be the number of dimes
  • thus the first equation is 3.6 = 0.05n +0.1d
  • If she has 46 coins then n + d = 46
  • then n = 46 - d
  • sub n = 46 - d into 3.6 = 0.05n +0.1d
  • 3.6 = 0.05(46 - d) + 0.1d
  • 3.6 = 2.3 -0.05d+0.1d
  • 1.3 = 0.05d
  • 26 = d
  • sub d = 26 into n+d=46
  • n+26=46
  • n=20
  • Check by subbing n=20 and d=26 into 0.05n +0.1d
  • 0.05(20) +0.1(26)
  • 1+2.6 = 3.6
6 0
3 years ago
The floor of a rectangular living room is 21 feet by 28 feet. What is the distance between
swat32

Answer:

35 feet.

Step-by-step explanation:

To find this, we will need to use the Pythagorean theorem to solve for the diagonal length. Call this diagonal length 'd'.

d² = 21² + 28²

d² = 1225

d² = 35.

Thus, the diagonal length is 35 feet.

3 0
3 years ago
The dean of a college is interested in the proportion of graduates from his college who have a job offer on graduation day. He i
ser-zykov [4K]

Answer:

A. D

B. χ2 > 3.841

C. χ2 = 3.4806

D. 0.0621

Step-by-step explanation:

Question A: The hypotheses the dean should use are:

a) H0 : π1 - π2 ≥ 0 versus H1 : π1 - π2 < 0.

b) H0 : π1 - π2 ≤ 0 versus H1 : π1 - π2 > 0.

c) H0 : π1 - π2 ≠ 0 versus H1 : π1 - π2 = 0.

d) H0 : π1 - π2 = 0 versus H1 : π1 - π2 ≠ 0.

Answer: (d)

H0 : π1 - π2 = 0 versus H1 : π1 - π2 ≠ 0.

(B). Referring to the scenario above, the null hypothesis will be rejected if the test statistic is ________.

Answer: χ2 > 3.841

(C). Referring to the scenario above, the value of the test statistic is ________.

Answer: χ2 = 3.4806 (using the formula)

(D). Referring to the scenario above, the p-value of the test is ________.

Answer: 0.0621 (the answer could be looked up, in table)

6 0
3 years ago
Someone please help me?
Harman [31]
The answer is 23 because I know this answer.
8 0
3 years ago
Read 2 more answers
Determine the type and number of solutions of x^2 + 10x − 25 = 0.
Vitek1552 [10]

Answer:

There is exactly 1 solution and it is a double root.

Step-by-step explanation:

To find this, factor the equation and solve.

x^2 + 10x - 25 = 0

(x - 5)(x - 5) = 0

Now that we have this factored, we can set each parenthesis equal to 0 and solve separately.

x - 5 = 0

x = 5

x - 5 = 0

x = 5

Because there are two of the exact same answer, we know it to be a double root.

5 0
3 years ago
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