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dsp73
3 years ago
9

Dan will be 8X years next year. how old was Dan five years ago. give your answer in terms of X

Mathematics
1 answer:
morpeh [17]3 years ago
6 0
If Dan is 8x years old next year then he must be 8x-1 years old this year
With the same logic, five years ago from this year, he must be 8x-1-5=8x-6

The answer should be 8x-6
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The decimal equivalent of is 3/4 is...
tatuchka [14]

Answer:

0.75

Step-by-step explanation:

since it's a fraction you can divide

3 divided by 4 is 0.75

4 0
2 years ago
a carnival charges $8.50 per ticket for adults and $4.50 per ticket for children. which expression represents the total price a
ra1l [238]
The answer is D <span>8.5x + 4.5y</span>
3 0
3 years ago
A researcher claims that the average annual salary of part-time community college instructors is at least $45,000. To test this
Doss [256]

Answer:

See explanation

Step-by-step explanation:

Solution:-

- The researcher claims :

" the average annual salary of part-time community college instructors is at least $45,000 "

- We will extract the claim made by the researcher to be the Null hypothesis:

                     Null Hypothesis : μ ≥ $45,000

- Any statement otherwise, or point of rejection criteria will denote the Alternate hypothesis that disbands the claim that:

" the average annual salary of part-time community college instructors is less than $45,000 " :

                    Alternate Hypothesis : μ < $45,000

- This type of test with a sample size of n = 25 < 30 and population standard deviation is also not given hints the use t-test statistics and t-critical value reject the claim.

                     Lower tail - one sample - T-test.

6 0
3 years ago
76 + 4= add the ones and the tens. Do you regroup? yes or no
nikklg [1K]
76 + 4 is 80... don't know what you're asking
6 0
3 years ago
A cylinder has a radius of 1.6 meters. Its volume is 95 cubic meters. Find it's height to the nearest tenth of a meter.
docker41 [41]
<h2>The height of cylinder is 11.8 meters</h2>

<em><u>Solution: </u></em>

<em><u> The volume of cylinder is given as:</u></em>

V = \pi r^2h

Where,

r is the radius and h is the height of cylinder

From given,

V = 95 cubic meters

r = 1.6 meters

h = ?

<em><u> Substituting the values we get,</u></em>

95 = 3.14 \times 1.6^2 \times h\\\\95 = 8.0384 \times h\\\\h = \frac{95}{8.0384}\\\\h = 11.818 \approx 11.8

Thus height of cylinder is 11.8 meters

5 0
3 years ago
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