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Svetllana [295]
2 years ago
10

A survey conducted by Black Flag asked whether or not the action of a certain type of roach disk was effective in killing roache

s. 79% of the respondents agreed that the roach disk was effective. The number 79% is a a. parameter. c. statistic. b. population. d. sample.
Mathematics
1 answer:
stiv31 [10]2 years ago
6 0
79% caraca bastante né bons estudos survey
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If the simple interest on ​$3,000 for 8 years is ​$1,680​, then what is the interest​ rate?
madam [21]

We need to use the formula for simple interest which is
I= prt
Where I is the amount of money you earned or pay in interest
p is the principal, the amount you deposited or borrowed
r is the interest rate expressed as a decimal
t is time in terms of years

In this problem, I= 1,680
p= 3000
t= 8
'. r is what we are looking for.

Substituting the numbers into the simple interest formula, we get
I=. p r t
1,680=(3000)(r)(8). Multiplying
1,680= 24,000r Divide both sides by 24,000
0.07= r
So, the percentage is (0.07)(100)= 7%...
8 0
2 years ago
Please help dhshajgsfge
e-lub [12.9K]
1/8

Explanation: There is 8 isle seats and it says what if one person would want to sit in ONE of the isle seats 1:person 8:seats
1/8
4 0
3 years ago
Alexander made of rectangular quilt that measured 3 1/4 feet in length by 2 3/4 feet and width to find the area multiply the len
Oksana_A [137]
\text {Area = } 3 \dfrac{1}{4}  \times 2 \dfrac{3}{4}

\text {Area = } \dfrac{13}{4}  \times \dfrac{11}{4}

\text {Area = } \dfrac{143}{16}

\text {Area = } 8 \dfrac{15}{16} \text { ft}^2
5 0
3 years ago
A recent survey was conducted to compare the cost of solar energy to the cost of gas or electric energy. Results of the survey r
Mariana [72]

Answer:

c) at most 11.1%

Step-by-step explanation:

We have the data that is 97 ± 12, with 97 being the mean and 12 the standard deviation.

Now, the percentage of people who reached them for less than 73 dollars, if it were a normal distribution:

z = (73 - 97) / 12 = - 2

so it would be, a probability of 0.0228 or 0.228%.

But we don't know what distribution it has, but we can get an idea.

A and D discarded, as they are very high values, and 73 is well below the average.

B) is still a very high value.

Therefore the answer is C, at most 11.1%

4 0
3 years ago
15•(3 + b) = 45 + b
Alekssandra [29.7K]
Subtract 15 from both sides that gets rid of 15 and your left with 3b =30b divide 3 on both sides and the answer is 10
8 0
2 years ago
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