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fredd [130]
3 years ago
14

Kathy has a circular hot tub in her backyard with a

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
8 0

Answer:

$231.42

Step-by-step explanation:

Find the tub radius.  It is C = 2πr, which here is C = 6.28(5.5 ft ) = 34.54 ft.

The border costs $6.70/ft.  Multiply $6.70/ft by 34.54 ft:

($6.70/ft)(34.54 ft) = $231.42

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Administrators at a large public high school are interested in their students’ standardized test scores. Last year, the mean sco
ratelena [41]

Answer:

The appropriate hypotheses for performing a significance test is:

H_0: \mu = 51

H_1: \mu > 51

Step-by-step explanation:

Last year, the mean score on the state’s math test was 51. The administrators have trained the teachers in a new method of teaching math hoping to raise the scores on this standardized test this year.

At the null hypothesis, we test if the mean score this year is the same as last year, that is:

H_0: \mu = 51

At the alternate hypothesis, we test if the mean score improved this year from last, that is:

H_1: \mu > 51

The appropriate hypotheses for performing a significance test is:

H_0: \mu = 51

H_1: \mu > 51

8 0
3 years ago
Write a real world statement for each inequality p < 200
sveta [45]
P is less than 200
im pretty sure thats it

6 0
3 years ago
Approximately how many kcal are contained in 3 ounces of 80-proof rum?
Mekhanik [1.2K]
3 ounces of 80-proof rum approximately contains 200,000 cal.

Now, we need to convert the cal into kcal. We know that:
1 cal = 1000 kcal
Therefore,
200,000 cal = 200 kcal
4 0
3 years ago
What is the format of this proof? Given: ∠ABC is a right angle, ∠DBC is a straight angle Prove: ∠ABD is a right angle
satela [25.4K]

Answer:

Given : ∠ABC is a right angle, ∠D BC is a straight angle.

To prove :∠AB D is a right angle.

Proof: ∠ ABC = 90°[ Given]

    ∠ D BC= 180° [ D BC is a straight line]

now, ∠ AB D and ∠ AB C are adjacent angles forming linear pair.

∠ AB D +∠ AB C =180° [By linear pair axiom]

⇒∠ AB D + 90= 180°

⇒∠ AB D=180°-90°

⇒∠ AB D=90°

∠AB D is a right angle

Hence proved.




3 0
3 years ago
Read 2 more answers
If 3x + 6 = 213x plus 6 equals 21, what does x + 2x plus 2 equal?
Ludmilka [50]

Answer:

17

Step-by-step explanation:

PLS GIVE BRAINLIEST

5 0
3 years ago
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