1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gnom [1K]
3 years ago
5

The oldest child in a family of four children is twice as old as the yougest. The two middle children are 13 and 15 years old. I

f the average age of the children is 13, how old is the youngest child?
Mathematics
1 answer:
Kobotan [32]3 years ago
4 0

The youngest child is 8 years old.

8 x 2 = 16

8 + 13 +15 +16 = 52

52 / 4 = 13

You might be interested in
Sebastian went hiking near his house.The first trail he hiked on took him 4.5 miles away from his house. The second trail he hik
Sveta_85 [38]

Answer:

               <u>Sebastian is 3.8 miles away from his house.</u>

Step-by-step explanation:

4.5 - 2.4 + 1.7

2.1 + 1.7

= 3.8

- Sebastian is 3.8 miles away from his house.

4 0
3 years ago
Read 2 more answers
An $8 item is marked up 75%. What is the cost of the item?
UNO [17]
14 dollars because it’s only 75 % out of. 8
8 0
2 years ago
What is the slope of a line that is perpendicular to a line whose equation is −2y = 3x + 7 ? Enter your answer in the box.
drek231 [11]
I was just on this .
8 0
3 years ago
Read 2 more answers
A welder produces 7 welded assemblies during the first day on a new job, and the seventh assembly takes 45 minutes (unit time).
likoan [24]

Answer:

(a). 72.9%.

(b). 13.6 hr.

Step-by-step explanation:

So, we are given the following data or parameters or information which is going to assist us in solving this question/problem;

=> "A welder produces 7 welded assemblies during the first day on a new job, and the seventh assembly takes 45 minutes (unit time). "

=> The worker produces 10 welded assemblies on the second day, and the 10th assembly on the second day takes 30 minutes"

So, we will be making use of the Crawford learning curve model.

T(7) + 10 = T (17) = 30 min.

T(7) = T1(7)^b = 45.

T(17 ) = T1(17)^b = 30.

(T1) = 45/7^b = 30/17^b.

45/30 = 7^b/17^b = (7/17)^b.

1.5 = (0.41177)^b.

ln 1.5 = b ln 0.41177.

0.40547 = -0.8873 b.

b = - 0.45696.

=> 2^ -0.45696 = 0.7285.

= 72.9%.

(b). T1= 45/7^ - 045696 = 109.5 hr.

V(TT)(17) = 109.5 {(17.51^ - 0.45696 – 0.51^ - 0.45696) / (1 - 0.45696)} .

V(TT) (17) = 109.5 {(4.7317 - 0.6863) / 0.54304} .

= 815.7 min .

= 13.595 hr.

8 0
3 years ago
How to simplify 5 to the power of 0​
Dennis_Churaev [7]

Answer:

1

Step-by-step explanation:

Any positive integer to power of 0 will ALWAYS be 1.

7 0
3 years ago
Other questions:
  • The midpoint of AB AB is at (3,7) (3,7) and A A is at (0,−5) (0,−5) . Where is B B<br> located
    14·1 answer
  • Which expressions are equivalent to 16 x 4 minus 64 check all that apply
    15·2 answers
  • Number graph that ranges from negative five to five on the x and y axes. A line passes through the labeled points (negative four
    12·1 answer
  • What is the Slope of this line?
    6·1 answer
  • 7. Ravmond looked out the window of his math classroom at the teacher's parking lot and saw a total of 13
    12·1 answer
  • John Johnson’s gross pay for this week is $520.95. He is single and claims one withholding allowance. What amount will be withhe
    10·2 answers
  • 7+7x;7(x+1/7 expression
    14·1 answer
  • Find an equation for the nth term of the arithmetic sequence.<br> -20, -16, -12, -8, ...
    8·2 answers
  • The Jones family paid $253 in August for
    7·2 answers
  • Use the drop-down menus below to represent the solution to the system of the two linear equations shown on the graph. The graph'
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!