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
anyanavicka [17]
4 years ago
9

Solve for x 3(x + 4) = 21

Mathematics
2 answers:
Amanda [17]4 years ago
4 0

Answer:

x=3

Step-by-step explanation:

3+4=7

3x7=21

Tatiana [17]4 years ago
4 0

Answer:

x=3

Step-by-step explanation:

3(x+4) = 21

3x+12 = 21

3x+ 12 = 21

     -12 = + 12

3x = 9

3x = 9

\frac{3x}{3} = \frac{9}{3}

x = 3

You might be interested in
Part c
ehidna [41]

The probability that the first slice of the cake will have the marble exists

7/66.

<h3>How to determine the probability using parts A and B?</h3>

Part A of the question demands that the volume of the cake be

estimated.

The volume of the cake exists, $V=\pi(\frac{d}{2} )^{2} h \\

$&V=\pi(\frac{9}{2} )^{2} * 4

$V=81 \pi

The part B of the question requires that the volume of each cut be

computed

The volume of each cut exists, V = 27

To estimate the required probability

We simply divide the volume of each cut by the volume of the cake.

$P=\frac{27}{81 \pi}

$P=\frac{1}{3 \pi}

Expand $\pi$

$&P=\frac{7}{3 * 22} \\

$&P=\frac{7}{66}

Therefore, the probability that the first slice of the cake will contain the

marble exists at 7/66.

To learn more about probability refer to:

brainly.com/question/24756209

#SPJ4

4 0
2 years ago
If you needed to reflect (-4,-5) over the y-axis what would the<br> coordinates be?
Triss [41]
Answer: The coordinates would be (4,-5)
6 0
3 years ago
Read 2 more answers
Fined the slope of this table
Readme [11.4K]

Answer:

−9

Step-by-step explanation:

\frac{y2-y1}{x2-x1} \\\\= \frac{0-49}{0-(-5)} \\\\= \frac{-45}{5} \\= -9

3 0
3 years ago
Read 2 more answers
Find 4(6a−5)−(9a+1).
stira [4]

Answer:

15a-21

Step-by-step explanation:

could be wrong though

4 0
4 years ago
Pls help this question is way to hard
lubasha [3.4K]

Answer:

men dog-59.09 women-40.90  total- 100%

men cat-61.29 women-38.70  total- 100%

men bird-39.13 women- 60.87  total- 100%

men total- 55.83   women- 44.16  total- 100%

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • I need help with these questions.
    8·2 answers
  • 4. On the Jackals baseball team, there are 24 right-handed players and 6 left-handed players. What is the ratio of right-handed
    15·1 answer
  • What is the surface area of the regular pyramid given below?
    13·1 answer
  • Sandy has $200 in her bank account
    8·1 answer
  • What is 4/5 of 1/4 of 40
    10·2 answers
  • 1) What is the solution to the equation?
    5·2 answers
  • Manuel, a plumber, has several pieces of pipe on his truck. He has a piece 6 feet long. A piece 7 feet long, one 9 feet long, an
    12·1 answer
  • George is bringing granola bars and apples for his classmates at school. Apples cost $0.75 each, and granola bars cost $0.15 eac
    11·1 answer
  • Solve from the image below
    7·1 answer
  • Simplify the algebraic expression by combining like terms. -7x² +19x²<br> Simplify your answer.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!