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
finlep [7]
1 year ago
12

If x = 12, which equation is true?A-27 + 2x = 51B5(x + 7) = 45C 3(25) - x = 39D 3(25 - x) = 39

Mathematics
1 answer:
Assoli18 [71]1 year ago
5 0

To determine which equation is true, let's replace "x" with "12" in each equation and solve.

Let's start with Option A.

\begin{gathered} -27+2(12)=51 \\ -27+24=51 \\ -3\ne51 \end{gathered}

For Option A, at x = 12, the value is not equal to 51 hence, Equation A is not true.

For Option B:

\begin{gathered} 5(x+7)=45 \\ 5(12+7)=45 \\ 5(19)=45 \\ 95\ne45 \\  \end{gathered}

As we can see, Option B is not also true.

Let's check Option C.

\begin{gathered} 3(25)-x=39 \\ 3(25)-12=39 \\ 75-12=39 \\ 63\ne39 \end{gathered}

Option C is also not true.

Let's check Option D.

\begin{gathered} 3(25-x)=39 \\ 3(25-12)=39 \\ 3(13)=39 \\ 39=39 \end{gathered}

As we can see, at x = 12, Equation D is equal to 39. Hence, Equation D is true.

You might be interested in
Simplify the expression please help me with this I need help now plz and thank you
Tema [17]

Answer:

68

Step-by-step explanation:

4 + (11 - 3)^2

= 4 + 8^2

= 4 + 64

= 68

7 0
2 years ago
Read 2 more answers
PLEASE HELP IN ONE MINUTE WILL MARK BRAINLIST
Maru [420]

Answer:

m=-5

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
How many degrees in a triangle
Vaselesa [24]
A triangle equals 180 degrees

3 0
2 years ago
Read 2 more answers
1=2 divided by 3 times r
Aliun [14]
1= \frac{2}{3r} --> 3r = 2 --> r=2/3
3 0
2 years ago
Read 2 more answers
According to the synthetic division below, which of the following statements are true? Check all that apply
slamgirl [31]

Answer:

Step-by-step explanation:

Looking at our particular problem...let's identify everything that's going on here. What's inside the box are the coefficients from the original polynomial, with the last number being the constant. If we have 3 numbers there, which we do, then the first number is a coefficient on x², the second number is the coefficient on x, and the third number is the constant. So from that we know that our original polynomial was a 2nd degree, namely:

3x² + 7x - 20

The number outside the box is the number we are dividing into this original polynomial. This is a number in solution form. That means that x = -4. If

x = -4 is a solution, then the factor is (x + 4) = 0.

The numbers in the very bottom row are the coefficients of what is called the depressed polynomial, and this depressed polynomial is one degree less than the degree with which we started. So this depressed polynomial is a linear one (first degree, which is a line). The very last number in this bottom row is the remainder. If the remainder is 0, then -4 is a solution of the polynomial, it is also a 0, and (x + 4) is a factor of the polynomial. Our remainder is a 0.

So putting that all together gives us the answers as A, C, and E are our choices.

8 0
2 years ago
Other questions:
  • If you are adding two fractions that are both less than 1/2 what is true about the sum?
    7·2 answers
  • What is the cube root of 159?
    10·2 answers
  • I need help with that ASAP
    6·1 answer
  • Tony believes that the more time he spends at the record store, the more money he tends to spend. To see if he is correct, he ke
    13·1 answer
  • Convert the rectangular equation to polar form.
    7·1 answer
  • Paula wants to tile her kitchen tht is 15 ft ×14 ft with 1 ft. Square tiles. How many tiles does she need?
    12·1 answer
  • A local movie theater has a one-film special on Tuesdays. They charge students $5 for a ticket
    10·2 answers
  • Suppose you have two rectangular prism with dimensions 2 feet by 3 feet by 5 feet. You want to join prisms together to form a la
    12·1 answer
  • Hailey Bell bought a flute for $150 and sold
    6·1 answer
  • Express 15 kobo as a decimal of #3.00
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!