All categories

3 years ago

Eleana and her grandfather both had birthdays last week.

Mathematics

2 answers:

disa [49]3 years ago

7 0

Answer:

Step-by-step explanation:

Degger [83]3 years ago

7 0

Answer:

Eleana is 20 years old and her grandfather is 80 years old.

Step-by-step explanation:

So first off, we want to make variables to represent Eleana and her grandfather.

Let x represent Eleana's age.

Since her grandfather is four times older than Eleana,

The expression should be 4x+x=100

Step One

Add the x's together and you get 5x=100.

Step Two

Divide both numbers by 5 to solve for x.

x=20

You might be interested in

What is x and what converse is used to find x

mrs_skeptik [129]

Answer:

Step-by-step explanation:

the third angle of the inner triangle is defined by using the rule that the sum of all angles in a triangle must be 180 degrees. let's call this angle a

180 = 48 + 16x + a

132 - 16x = a

and then we know that both angles, 28x and a together must also be 180, as they are complementing each other to cover the whole top of the base line.

so,

28x + 132 - 16x = 180

12x = 48

x = 4

8 0

2 years ago

Determine whether the underlined number is a statistic or a parameter. In a study of all 1963 employees at a college, it is foun

Ann [662]

Answer:

1. Parameter because the value is a numerical measurement describing a characteristic of a population

Step-by-step explanation:

A parameter is a fixed measure which <u>describes the whole population</u> while a statistic is a <u>characteristic of a sample</u> (which is a portion of the target population).

In a study of all 1963 employees at a college, it is found that "40%" own a computer.

The study involved the entire population of employees in the college, therefore the result describes the computer owning <u>characteristics of the whole population under study</u>. It is therefore a parameter.

<u>The correct option is 1.</u>

5 0

3 years ago

A=2,b=1 and c=4.What is 3ac-a+2b

kati45 [8]

Step-by-step explanation:

a = 2

b = 1

c = 4

<h2>Question:</h2>

$3ac - a + 2b$

= Solution ,

= 3 × 2 × 4 - 2 + 2 × 1

= 24 - 2 + 2

= 24 + 2 - 2

= 26 - 2

= 24

hence the answer is 24....

6 0

2 years ago

The cheetah is 7/6 the Perigen falcon is 10/3

Brilliant_brown [7]

The answer is $2 \frac{1}{6}$ .

Explanation:

In order to subtract the fractions, we must make them like fractions. To do this, the denominators must be the same by multiplying (only). Since the first fraction is $\frac{10}{3}$ , 3 can be multiplied by 2 to get 6, which is the other fraction, we can multiply it. Whatever you do to the denominator you must do to the numerator. Now multiply 2 by the numerator (10) to get $\frac{20}{6}$ . Now we can subtract the fractions $\frac{20}{6}$ and $\frac{7}{6}$ to get 13/6. Since this fraction is not in mixed fraction form yet, we must do that first. goes into 13 twice, so the whole number is 2 and there is still 1 left, making the fraction $\frac{1}{6}$ . Therefore, the difference is 2 $\frac{1}{6}$ .

8 0

3 years ago

Derrick plays football. During practice the ratio of quarterbacks to wide receivers is 5:12. If there were 36 wide receivers, ho

kirill [66]

Answer:

I believe there would be 15.

Step-by-step explanation:

well 12×3=36

5×3=15 so 15:36

5 0

2 years ago