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
OLga [1]
3 years ago
9

I have no idea how to solve this. Help would me much appreciated.

Mathematics
1 answer:
Otrada [13]3 years ago
7 0

Answer:

Adam is 9 years old.

Step-by-step explanation:

Let d and c represent Adam's and Alicia's ages.

d = c - 15, and

c + 6 = 2(d + 6)

Rearrange d = c - 15 as c = d + 15, and then substitute d + 15 for c in the second equation.  We obtain:

d + 15 + 6 = 2(d + 6), or

d + 21 = 2d + 12

Combining like terms, we get 21 = d + 12, or 9 = d.

If d = 9 then c = d + 15, or c = 9 + 15, or c = 24.

Adam is 9 years old.

You might be interested in
Which could be the missing data item for the given set of data if the median of the complete data set is 50?
aleksandr82 [10.1K]
Find the median of this data
21+23+60+60+50+54+54+59+26+15+43+15=480/ 12 = 40
Now the median should be 50 so take 50 - 40 = 10

The missing number from the data is 10
6 0
3 years ago
Read 2 more answers
What is 1/7 times 2/3?
Alisiya [41]
1/7 x 2/3 =
2/21

hope this helps
8 0
3 years ago
Read 2 more answers
The circumference of my circle is 45 inches. What is the diameter
romanna [79]

Answer:

14.32 inches to nearest thousandth.

Step-by-step explanation:

Circumference = π * d        where d = the diameter.

So 45 = π * d

d = 45 / π

=  14.32 inches

8 0
3 years ago
Read 2 more answers
Can someone help me with this please? Question and possible answers down below
mariarad [96]

Answer:  D) CPCTC

<u>Step-by-step explanation:</u>

step 6 proves the triangles are congruent.

step 7 states that if the triangles are congruent, then parts of the triangle are congruent.

Congruent Parts of Congruent Triangles are Congruent (CPCTC)

5 0
3 years ago
HELP please and explain
jonny [76]
(x3)(x4) is x7 because when you have a problem like that, you have to ADD your exponents.

-(m4)3 is -m12 since you're multiplying them.

(z3)5 is z15

y4 x y5 is y9

thats all i know of. hope it helps cx
7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of 412.321 if the underlined diget is 1 on the part .321?
    12·2 answers
  • I don’t know what todo someone help me
    10·1 answer
  • Which statements about the graph of the function f(x) = –x2 – 4x + 2 are true? Check all that apply.
    5·1 answer
  • Is 7 1/5 times 49 7/5 equivalent to 49
    10·1 answer
  • A batch of 484 containers for frozen orange juice contains 7 that are defective. Two are selected, at random, without replacemen
    13·1 answer
  • The table below shows all of the possible outcomes for rolling two six-sided number cubes. 1 2 First Number Cube Second Number C
    11·1 answer
  • How do you find the range of (x^3+x^2-6x)/(4x^2+4x-8) algebraically?
    7·1 answer
  • 6. Elena and Jada are 24 miles apart on a path when they start moving
    11·2 answers
  • If we changed the 3 to a 0 in the equation, what would happen to the graph?
    7·2 answers
  • Jorge is building a table out of boards that are 3.75 inches wide. He wants the table to be at least 36 inches wide. What is the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!