Jose is now six years older than John. In two years, Jose will be twice as old as John. How old is John now?

Answers

Answer 1
Answer:

x + 6 =y

8 =2y ........ y = 8/2 = 4

4+6 =10


John is four & Jose is 10


Answer 2
Answer: John is four, and Jose is ten.

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there are 650 students in a school if the number of girls is 106 more than the boys how many boys are in the school​
2. Which of the following is an equation? A. y/9 - 3B. 9 - 2C. y/9 = 3D. 7 + y
Describe the translation of the graph of y = x2 that results in the graph of y = (x - 3)2.up 3 unitsdown 3 unitsOright 3 unitsleft 3 units
The speed of light is 300,000,000 meters per second. The sun is approximately meters 1.5 x 10¹¹ from Earth. How many seconds does it take for the sunlight to reach Earth?

The line that touches a circle at one point is called the

Answers

Answer: Tangent

Explanation: For a circle a tangent is a straight line which touches the circle at only one point. It is also referred to as the line of tangency.

The time taken to build a house is inversely proportional to the number of builders.If there are 6 builders, it takes 80 days to complete the house.
How many builders must be employed to build the house in just 16 days?

Answers

Answer:

30 builders

Step-by-step explanation:

80÷5=16

6x5=30

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). Heavier cars tend to have lower fuel efficiencies (lower mpg ratings). Which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context? A. Weight B. Fuel efficiency

Answers

Answer:

Correct option: A. Weight.

Step-by-step explanation:

In regression analysis there are two kinds of variables: Explanatory and Response variable.

The explanatory variable are used to predict the changes in the response variable. They are also known as independent or predictor variable.

The response variable are observed for any changes caused by the explanatory variable. They are also known as the dependent or experimental variable.

In this case it is provided that heavier cars have lower fuel efficiencies.

It implies that there is linear inverse relationship between the variables weight of the car and fuel efficiency.

The response variable is the fuel efficiency and the explanatory variable is the weight of the car. Since the weight of the car is used to determine the fuel efficiency.

Thus, the explanatory variable is the weight of the car.

Final answer:

The explanatory variable in this context is the weight of the car, as it is used to predict or explain the car's fuel efficiency.

Explanation:

In this context, the most naturally considered explanatory or predictor variable would be the weight of the car. This term is used to denote the variable that is used to predict or explain changes or variations in another variable. In this case, the weight of the car is used to predict or explain the fuel efficiency (measured in miles per gallon). For instance, if the weight of a car increases, we would expect the fuel efficiency to decrease (lower mpg) because heavier cars often require more energy to move, which in turn results in higher fuel consumption.

Learn more about Explanatory Variable here:

brainly.com/question/31991849

#SPJ3

The drawing below shows circle B and circle E. The MAC = m DF, and the length of AC is 3 times the length of DF.

Answers

Answer:

I believe the answer would be BC=3(EF)

Step-by-step explanation:

How to simply the radical

Answers

6√2 + 4 √32
try to get the same number "2" remaining under the root sign by finding what # times 2 gives 32
6√2 + 4√2×√16
since 16 is a perfect Square √16 gives 4
therefore.
6√2 + 4 ×4 √2
6√2 +16√2
these are Like terms so add them
which would give u
22√2
hoped i helped, feel free to ask any question XOX

You want to create an 80% confidence interval for the average age of people who attend U of O football games. You take a sample of 100 attendees and find the average age to be 43.7 years old with a standard deviation of 7 years. Find the value of t* for this confidence interval. Do not round your answer. Write your answer in decimal form, not as a fraction or percent.

Answers

Answer:

80% confidence interval for the average age of people who attend U of O football games is [42.795 , 44.604].

Step-by-step explanation:

We are given that a sample of 100 attendees and find the average age to be 43.7 years old with a standard deviation of 7 years.

So, the pivotal quantity for 80% confidence interval for the population average start up cost is given by;

          P.Q. = (\bar X - \mu)/((s)/(√(n) ) ) ~ t_n_-_1

where, \mu = sample average age = 43.7 years old

            \sigma = sample standard deviation = 7 years

            n = sample of attendees = 100

            \mu = population average age of people

So, 80% confidence interval for the average age of people, \mu is ;

P(-1.2915 < t_9_9 < 1.2915) = 0.80

P(-1.2915 < (\bar X - \mu)/((s)/(√(n) ) ) < 1.2915) = 0.80

P( -1.2915 * {(s)/(√(n) ) < {\bar X - \mu} < 1.2915 * {(s)/(√(n) ) ) = 0.80

P( \bar X -1.2915 * {(s)/(√(n) ) < \mu < \bar X +1.2915 * {(s)/(√(n) ) ) = 0.80

80% confidence interval for\mu = [ \bar X -1.2915 * {(s)/(√(n) ) , \bar X +1.2915 * {(s)/(√(n) ) ]

                                                 = [ 43.7 -1.2915 * {(7)/(√(100) ) , 43.7 +1.2915 * {(7)/(√(100) ) ]

                                                 = [42.795 , 44.604]

Therefore, 80% confidence interval for the population average age of people who attend U of O football games is [42.795 , 44.604].