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
Pavlova-9 [17]
3 years ago
12

I really need help If AD = 12 and AC = 4y-36, find the value of y

Mathematics
1 answer:
Mice21 [21]3 years ago
8 0
Notice the tickmarks

AD = DC

now AC, which is the whole length from side to side,
is 4y-36
AD is 12, and since DC is the same as AD, so
DC = 12

AC = AD + DC, or 12 + 12
now, we know AC is also 4y-36

so \bf \begin{array}{cccccclllllll}
AC&=&AD&+&DC\\
\downarrow &=&\downarrow &&\downarrow \\
4y-36&=&12&+&12\\

\\ \quad \\ \quad \\
4y-36&=&&24

\end{array}

solve for "y"

You might be interested in
3/4 : 12 = 3n solve using cross method
ANTONII [103]

Answer:

N = 1/48

Step-by-step explanation:

In pic

(hope this helps can I pls have brainlist  (crown) ☺️

7 0
3 years ago
An easy question all wrong or unhelpful or no-work answers will be reported.
miss Akunina [59]
Elimination:

7x - 3y = 20
5x + 3y = 16
(add)
12x = 36
÷ 12
x = 3

(5 × 3) + 3y = 16
15 + 3y = 16
- 15
3y = 1
÷ 3
y = 1/3

Substitution:

5x + 3y = 16
- 3y
5x = 16 - 3y
÷ 5
x = 3.2 - 0.6y

5(3.2 - 0.6y) + 3y = 16
16 - 3y + 3y = 16
16  = 16
- 16
6y = 0
÷ 6
y = 0

Sorry the substitution messed up for some reason, I'll fix it after I've answered the other question

6 0
3 years ago
Find the area of a square with side length 13 ft
Strike441 [17]
The area of a square is the length of the side squared. 13^2 = 169
The area of a square with a side length of 13 feet is 169 feet.

Hope this helps =)
8 0
3 years ago
If y=3 when x=9 find x when y=1<br> &amp; if y=2 when x=0.5 find y when x=3
hram777 [196]
I got -19/655 and i know for sure this isnt the correct answer.
4 0
3 years ago
For the given set, first calculate the number of subsets for the set, then calculate the number of proper subsets. {18, 8, 14, 9
kicyunya [14]

Answer:

Subsets of the given set = 32

Proper subset of the given set = 31

Step-by-step explanation:

Given set is {18, 8, 14, 9, 6} having 5 elements.

We know number of subsets of a set having n elements are represented by

2^{n}

where n is the number of elements in the set.

Therefore, subsets of the given set = 2^{5}

= 32

Since original set itself is a subset of its own, is not a proper subset.

Therefore, proper subset of a set = 2^{n}-1

= 2^{5}-1

= 32 - 1

= 31

7 0
3 years ago
Other questions:
  • Please check over this!! 20 points! easy fractions
    8·2 answers
  • Simplify the expression by combining like terms. <br> 15+12−5+4−7
    14·2 answers
  • Please help ASAP 25 pts + brainliest to right/best answer
    6·1 answer
  • A scientist wants a 66 ounce saline solution with concentration 12% . She has concentrations of 4% and 15% . How much of each so
    8·1 answer
  • What is an easier way to solve algebraic expressions?
    6·1 answer
  • 7x-4=24 I need step by step
    6·2 answers
  • What happens to the volume of a sphere when its radius is doubled?
    8·1 answer
  • The number of lightening strikes on a square kilometer of open ground in a year has mean 5 and standard deviation 2.1. The Natio
    15·1 answer
  • Can you guys please help me with this problem
    13·2 answers
  • Scarlet stars a spelling class at 11:05 AM. the test is 1 hour and 5 minutes long. after the spelling test, scarlet has art clas
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!