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
Leviafan [203]
3 years ago
8

Tony is 4 years younger than his brother josh and two years older than his sister Cindy. Tony also has a twin brother, Evan. All

the ages totaled together of the children is 66. How old is tony?
Mathematics
1 answer:
Sholpan [36]3 years ago
8 0

Let Tony's age = x

He is 4 years younger than his brother Josh, so Josh's age would be x + 4

He is 2 years older than his sister, so her age would be x - 2

He has a twin, which would be the same age, so the twins age is also x

They all add together to equal 66, so you get:

x  + x + x+4 + x-2 = 66

Simplify:

4x +2 = 66

Subtract 2 from both sides:

4x = 64

Divide both sides by 4:

x = 64/4 = 16

Tony is 16 years old.

You might be interested in
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.5 parts
DochEvi [55]

Answer:

We accept  H₀   with the information we have, we can say level of ozone is under the major limit

Step-by-step explanation:

Normal Distribution

population mean  =   μ₀   =  7.5   ppm

Sample size     n   =  16      df  =  n  -  1  df  =  15

Sample mean      =    μ   =  7.8  ppm

Sample standard deviation   =  s  =  0.8

We want to find out if ozono level, is above normal level that is bigger than 7.5

1.- Hypothesis Test

null hypothesis                          H₀         μ₀   =  7.5

alternative hypothesis             Hₐ          μ₀  >  7.5  

2.-Significance level    α  =  0.01   we will develop one tail-test (right)

then   for   df  =  15    and    α =  0,01   from t -student table we get

t(c)  = 2.624

3.-Compute  t(s)

t(s)  =  (  μ -  μ₀ ) / s /√n            ⇒   t(s)  = ( 7.8  -  7.5 )*4/0.8

t(s)  = 0.3*4/0.8

t(s)  = 1.5

4.-Compare   t(s)   and  t(c)

t(s)  <  t(c)       1.5  <  2.64

Then  t(s) is inside the acceptance region. We accept  H₀

7 0
2 years ago
Cory brings five 1-gallon jugs of juice to server during parent night at his school. If the paper cups he is using for drinks ca
Svetlanka [38]

640 is your answer. 5 1-gallon jugs=640 fluid ounces.

4 0
3 years ago
The New family pays $34.56 for
lianna [129]

Answer:

$3.456

Step-by-step explanation:

34.56÷100x10

=3.456

$3.456 is 10% of $34.56

4 0
3 years ago
Tyler bought a large bag of peanuts at a baseball game. Is it more reasonable to say that the mass of the peanuts is 1 gram or 1
Blababa [14]
Would you want only 1 gram of peanuts?
Or one Pound of peanuts? or kilograms


1 Kilo
4 0
2 years ago
What is the exact value of sin (-5x/3 <br> 1/2 <br> -1/2<br> ✔️3/2<br> -✔️3/2
Cloud [144]

Answer:

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Ruthie wants to construct a line that passes through point P and is perpendicular to AB. What should Ruthie do first?
    13·2 answers
  • sarah lives 7.15 kilometers away from her school. which fraction represents the distance from sarah’s house to her school
    5·1 answer
  • How do u write 5(2x - 1) in a distributive property
    5·1 answer
  • 15 less than a number
    11·2 answers
  • The lengths of two sides of
    12·2 answers
  • Which expression is a perfect cube? x to the 8th power y to the 24th power m to the 28th power s to the 64th power
    8·1 answer
  • What is the sale price for your purchase if you have a 20% off coupon and you buy a shirt for $19.99 and pants for $10.
    15·1 answer
  • 1 + 14 = <br> 1 - 14 =<br> 1 + 12 =<br> 1 - 12 =<br> 1 + 13 = <br> 1 - 13 +
    12·2 answers
  • This is due in a bit and im having a bit of trouble, any solutions?
    11·1 answer
  • ANSWER THIS PLEASE FAST!! I NEED TO TUNR IT IN, IN LIKE 10 MINUTES!! Alexander earns the same amount of money each month. Alexan
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!