All categories

2 years ago

Have the conditions for inference been met?

Mathematics

1 answer:

alekssr [168]2 years ago

5 0

Answer: the answer is A

Step-by-step explanation: because the original question does not state that the swimmer “randomly selected” the members. It only says the swimmer “selects” 10 members. Therefore, it is A (The sample is not random)

youre welcome

You might be interested in

1 Mr. Ruiz made a map of his ranch on the grid shown below.

tatuchka [14]

Answer: C, 20%

Hope this helps

5 0

2 years ago

Consider the inequality-5(x+7)<-10. write an inequality representing the solution for x

storchak [24]

-5x - 35 = 0
-5x = 0 + 35
-5x/-5 = 35/-5
X = -7

8 0

3 years ago

Joaquim earns a salary of $4,000 per month plus a 6% commission

Dmitriy789 [7]

I believe this means that Joaquim earns 1.06 times his salary. Thus he earns (4000)(1.06) or $4240

6 0

2 years ago

Kelsey has a new baby brother! He weighs 8 lbs 3 oz. The doctor said the baby should gain about 5 ounces per week. At that rate,

yarga [219]

Equation: 0.5x + 8.3
Plug in 12 for x and solve

5 0

2 years ago

For a school play, Rico bought 3 adult tickets and 5 child tickets for $40. Sasha bought 1 adult ticket and 5 child tickets for

Serhud [2]

The cost of one adult ticket is $7.5 and one child ticket is $3.5

Julia will pay $48 for 5 adult tickets and 3 child tickets.

Step-by-step explanation:

Let,

Cost of one adult ticket = x

Cost of one child ticket = y

According to given statement;

3x+5y=40 Eqn 1

x+5y=25 Eqn 2

Subtracting Eqn 2 from Eqn 1

$(3x+5y)-(x+5y)=40-25\\3x+5y-x-5y=15\\2x=15$

Dividing both sides by 2

$\frac{2x}{2}=\frac{15}{2}\\x=7.5$

Putting x=2.5 in Eqn 1

$3(7.5)+5y=40\\22.5+5y=40\\5y=40-22.5\\5y=17.5$

Dividing both sides by 5

$\frac{5y}{5}=\frac{17.5}{5}\\y=3.5$

The cost of one adult ticket is $7.5 and one child ticket is $3.5

5 adult tickets = 5*7.5 = $37.5

3 child tickets = 3*3.5 = $10.5

Total = 37.5+10.5 =$48

Julia will pay $48 for 5 adult tickets and 3 child tickets.

Keywords: linear equation, subtraction

Learn more about subtraction at:

#LearnwithBrainly

8 0

3 years ago