Jim, Carla and Tomy are members of the same family. Carla is 5 years older than Jim. Tomy is 6 years older than Carla. The sum of their 3 ages is 31 years. How old is each one of them?
Answers
carla's age= x+5
tomy's age= 6+5+x
sum of their ages=31
x+x+5+x+5+6=3x+16=31
3x=31-16
=15
x=15 divided by 3
= 5
jim's age=5
carla's age=10
tomy's age = 16
y - Carla
z - Tomy
Related Questions
If you save $3,000 at an interest rate of 14 percent per year, how much will you have at the end of six years? A. $5,805.96 B. $6,502.34 C. $6,584.91
When Ava bought her car, it was worth $19,340. It was expected to decrease at a rate of 12.5% each year.What is best prediction for the value of Ava’s car 10 years after she bought it? (Points : 5)
A ray is a defined term because it
“without using technology describe the end behavior of f(x) equals negative 3X to the 4th+ 7X squared -12 X +13” PLEASE HELP!!!!
B.f(x) = (x – 4)2 + 0
C.f(x) = (x + 8)2 – 72
D.f(x) = (x + 4)2 – 32
Answers
I'll rearrange it using y and x.
y = x² - 16x + 8
y - 8 = x² - 16x
y - 8 + 64 = x² - 16x + 64
y + 56 = (x-8)²
y = (x-8)² - 56
(x - 8)(x - 8) = x(x-8) - 8(x-8) = x² - 8x -8x + 64 = x² - 16x + 64
Choice A.) f(x) = (x-8)² - 56
By completing the square, the function in vertexform f(x) = (x - 8)² - 56 is equivalent to the function in standardform f(x) = x² + 8 - 16 · x. (Correct choice: A)
How to determine the vertex of the quadratic function by algebraic means
In this question we must transform a quadraticfunction in standardform into vertexform. An analytical approach is completing the square, which consists in transforming part of the polynomial into a perfect squaretrinomial. Now we proceed to present the procedure:
1) x² + 8 - 16 · x Given
2) x² - 16 · x + 8 Commutative property
3) x² - 16 · x + 64 - 56 Modulative property/Existence of additive inverse/Definition of addition
4) (x - 8)² - 56 Associative property/Perfect square trinomial/Result
By completing the square, the function in vertexform f(x) = (x - 8)² - 56 is equivalent to the function in standardform f(x) = x² + 8 - 16 · x. (Correct choice: A)
To learn more on quadratic functions: brainly.com/question/5975436
#SPJ5
a. $7.00
b. $15.50
c. $15.75
d. $16.50
Answers
Its 16.50
11.75 + 4.75
add them and you have your answer :) hope that helped
Answers
Solution 1 : 10mL with 20% acid
Solution 2 : 30mL with x% acid
Solution 3 : 40mL with 32% acid
Since solution 1 + solution 2 = solution 3, let us substitute the given values we have:
10(0.2) + 30(x) = 40(0.32)
2 + 30x = 12.8
To solve for the unknown concentration x, we subtract 2 from both sides:
2 + 30x - 2 = 12.8 - 2
30x = 10.8
Dividing both sides by 30:
30x/30 = 10.8/30
x = 0.36
Therefore the unknown solution is 36% acid.
Answer:
Therefore the unknown solution is 36% acid.
Step-by-step explanation:
{(2,4), (2,9), (-2,-8), (7,5)}
{(6,4),(-3,-6),(-3,9), (-8, –7)}
{(5,9), (-6,1),(6,5),(-8,5)}
Submit Answer
Answers
Answer:
{(5,9), (-6,1),(6,5),(-8,5)}
Step-by-step explanation:
There is no repeating X factor
Answers
Answer:
What do you mean.....???
ex.....0.444444.......
Remove point.... and Write 9 as denominator
that is 4/9
Answers
The question gives you the formula to use, but it's printed wrong.
The 'x' is an exponent after the (1 + r).
All you have to do is take the formula, and write the numbers into it
that are also given.
The key thing to spot is that the forest is decreasing, so the 'r' is negative,
just as if you had money in a savings account and every year the bank took
6% out of it.
So the formula to use is f(x) = P (1 + r) ^x
P = 2000
r = -0.06
f(x) = 2000 (1 - 0.06)^x
= 2000 (0.94)^x
The amount left after 12 years is
2000 (0.94)¹² =
2000 (0.476) = 951.8 square kilometers.
hope this helps- i did the test :)
Answer: