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
Alchen [17]
2 years ago
10

3(x - 4) + 9 = 18 Step by step (and explanation)

Mathematics
1 answer:
Andrews [41]2 years ago
3 0

Answer:

= 7

Step-by-step explanation:

3(x−4)+9=18

3 − 1 2 + 9 = 1 8

 3 − 3 = 1 8

3  = 1 8+3

3  = 21

x= 21/3

x=7

You might be interested in
What percent of 120 is 28.8
12345 [234]

Answer:

24

Step-by-step explanation:

Step 1: We make the assumption that 120 is 100% since it is our output value.

Step 2: We next represent the value we seek with $x$.

Step 3: From step 1, it follows that $100\%=120$.

Step 4: In the same vein, $x\%=28.8$.

Step 5: This gives us a pair of simple equations:

$100\%=120(1)$.

$x\%=28.8(2)$.

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); we have

$\frac{100\%}{x\%}=\frac{120}{28.8}$

7 0
3 years ago
Read 2 more answers
How to calculate square root?
OLEGan [10]
To calculate the square root, you can either use the √symbol on a calculator or you can manually find it using Prime Factorization. For non-perfect squares, Prime Factorization is the way to go. 
 
The first two steps work for solving large perfect squares as well.

1. Divide your number into perfect square factors.

2. Take the square roots of your perfect square factors. 

3. If your number doesn't factor perfectly, reduce your answer to simplest terms. 

4. If needed, estimate. In some cases if you have memorized some of the square roots, you can estimate where the number would be. 
ie.  \sqrt{63}       you know that 7^2 =49 and 8^2 = 64,  so you can estimate that the \sqrt{63} would be between 7 and 8 but closer to 8.

5. <span>Alternatively, reduce your number to its lowest common factors as your first step.</span><span> Finding perfect square factors isn't necessary if you can easily determine a number's prime factors (factors that are also prime numbers).
ie.  </span>\sqrt{45}
 =  \sqrt{9*5}
 = \sqrt{3*3*5}
 =   3 \sqrt{5}

Hope this helped!!!
6 0
3 years ago
Find the measure of the supplement of a 9 degree angle. The measure of the supplement of a 9 degree angle is ?
RoseWind [281]

The supplement of a 9 degree angle is 171 degrees.

5 0
3 years ago
Y’all help 3 giving brainlest if you help and give steps (send picture of your work if you can)
cestrela7 [59]

Answer 200 to 520 and 300 to 580.

Step-by-step explanation:

Each one increases by 60.

7 0
2 years ago
Read 2 more answers
a cake calls for 1 1/2 cups of butter. one tablespoon equals 1/16 cup. How many tablespoons of butter do you need to make the ca
sasho [114]
1/16 cup..........................1 tablespoon
1 1/2= 3/2 cups................x tablespoons

1/16*x=3/2
x= 3/2 : 1/16=3/2*16= 24 tablespoons he needs
4 0
3 years ago
Other questions:
  • Dividing whole numbers :what is 61 divide by 9 and 31 divide by 3 the picture is the last one can you tell me plzzz needs to b d
    8·1 answer
  • Josey got an answer of 167 r 4 for 3÷505. explain and correct joseys error
    13·2 answers
  • Aaron is standing at point C, watching his friends on a
    9·2 answers
  • Drew's father bought 40 liters of gasoline at $.68 per liter. How much did he pay?​
    9·2 answers
  • Can somebody please help me with the highlighted question?
    7·1 answer
  • (-3,-5) (2,5) midpoint
    15·2 answers
  • Tania went to Italy.
    14·1 answer
  • Pls help :D<br><br> ( #7- it’s a -5 )
    5·1 answer
  • Angle G in trapezoid FGHJ measures 135 degrees. Jasmine reflects the trapezoid over the x-axis. What is the measure of the image
    15·2 answers
  • Doctor orders 100mg of amiordarone the bottle concentration is 5 mg/ml how many ml do you give?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!