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
Inga [223]
3 years ago
9

Sally's age is 2 plus 3 times John's age. Together, Sally and John's age equals 30. How old is Sally?

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
3 0

Answer:

Sally is 23 years old.

Step-by-step explanation:

John's age is completely unknown, so it is known as x

Meanwhile, Sally's age can be represented as 3x+2

The sum of both ages is 30.

So, x+3x+2=30

Combine like terms.

4x+2=30

Subtract 2 from both sides.

4x=28

Divide both sides by 4.

x=7

John is 7 years old.

Sally's age: 3(7)+2=23

Sally is 23 years old.

You might be interested in
Barnabus caught 84 fish in 4 days. Each day he caught 10 more than on the day before. How many fish did he catch each of the 4 d
balandron [24]
X + x + 10 + x + 20 + x + 30 = 84.
4x + 60 = 84.
84 − 60 = 24
4x =  24.
24 / 4 = 6 = x.

Answer:
Day One:  6 fish
Day Two:  16 fish
Day Three:  26 fish
Day Four:  36 fish
5 0
3 years ago
What is the sale price 45% of 69.50
Zolol [24]
   x         55
-------- = ---------
69.50     100

69.50*55= 3822.5
3822.5/100= 38.225
x=$38.22
5 0
3 years ago
What is the area of a circle with circumference of 12π?
ad-work [718]

Answer:A≈11.46


Step-by-step explanation:


6 0
4 years ago
Read 2 more answers
Keith uses 18 cherries and 3 peaches to make a pie filling. Lena uses an equivalent ratio of cherries to peaches when she makes
Yuliya22 [10]
No, she cannot use a ratio of 21 to 6. You can figure this out in a few different ways. First you can simplify down the fraction 18/3, to get 6/1. 6/1 does not equal 21/6, because 21/6 equals 7/2. However, 6/1 it does equal 36/6. You could also noticed that three doubles to make six, yet 18 does not double to make 21
3 0
4 years ago
Read 2 more answers
Which is the best measure for the height and width of a cell phone?
Inessa [10]
B. centimeters i think it would be
8 0
3 years ago
Read 2 more answers
Other questions:
  • A restaurant has 6 1/2 pounds of jalapeno peppers, 4 3/4 pounds of red bell peppers, and 5 1/4 pounds of poblano peppers. How ma
    13·2 answers
  • A coin contains 9 grams of nickel and 16 grams of copper,for a total weight of 25 grams what percentage of the metal in the coin
    11·1 answer
  • Anchara drops a penny from a height of 60 feet above the ground. The equation h=-16t^2 + 60 models the penbys height h i feet as
    14·1 answer
  • Question 2
    5·1 answer
  • Gumballs cost $0.50 each and jawbreakers cost $0.30 each bob has 3.00 to spend on candy
    11·1 answer
  • Evaluate 2r +1 if r=3
    5·1 answer
  • Evaluate the factorial expression. 322!/321!
    11·1 answer
  • 20 POINTS ANSWER FAST!
    5·2 answers
  • What is the equation of the line parallel to 8x−16y=−14 and passing through (3,0)?
    9·1 answer
  • Quadrilateral ABCD is similiar to quadrilateral EFGH. The lengths of the three longest sides in quadrilateral ABCD are 60 feet,
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!