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
alexandr402 [8]
3 years ago
7

2n + 4n = 42 Answer: the value of n is .....

Mathematics
2 answers:
jeka57 [31]3 years ago
7 0

Answer: 7

Step-by-step explanation:

4x7= 28 and 2x7=14

14+28= 42

Gennadij [26K]3 years ago
5 0

Answer:

7

Step-by-step explanation:

2n + 4n = 6n, adding like terms

6n = 42

6n/6 = 42/6

n = 7

You might be interested in
(answer ASAP! thanks.) "As part of a math project, Joel recorded the types of vehicles passing an intersection in one hour. His
ANTONII [103]

Step-by-step explanation:

There is a total amount of vehicle of 100

which is good because now you can say 73% is cars 16% is small trucks 6% is large trucks and 2% motorcycle and 3% bicycle. Adding the trucks (small 16, large 6) gives us 24% so you can do 100% - 24% and get 74%. Thanks and goodbye!

7 0
3 years ago
Transform the given quadratic function into vertex form f(x) = quadratic function into vertex form f(x) = quadratic function int
melisa1 [442]

Answer:

Vertex form: f(x) =(x +\frac{7}{2})^2 -\frac{53}{4}

The vertex is (-\frac{7}{2},-\frac{53}{4})

Step-by-step explanation:

For a general quadratic function the form is:

ax ^ 2 + bx + c

For the function

f(x) = x ^ 2+ 7x -1

The values of the coefficients for the function are the following: a = 1, b =7, c = -1

Take the value of b and divide it by 2. Then, the result obtained squares it.

\frac{b}{2}= \frac{7}{2}

(\frac{b}{2})^2=(\frac{7}{2})^2=\frac{49}{4}

Add and subtract \frac{49}{4}

f(x) = (x ^ 2 +7x +\frac{49}{4}) -\frac{49}{4}- 1

Write the expression of the form

f(x) = (x+\frac{b}{2})^2 +k

f(x) =(x +\frac{7}{2})^2 -\frac{53}{4}

The vertex is (-\frac{7}{2},-\frac{53}{4})

6 0
3 years ago
Clare earned a total of $12 for 2 hours of yard work. How many hours in all will it take Clare
Luba_88 [7]

Answer:

3 hours

Step-by-step explanation:

$12 = 2hours

Find how much Clare was paid for one hour

Total money earned ÷ number of hours = wage per hour

12 ÷ 2 = $6 per hour

set up equation

6x = 18

This equation says 6 dollars an hour × number of hours = $18

To solve for this equation, divide both sides by 6 (this isolates the variable)

6x ÷ 6 = 18 ÷ 6

1x = 3

x = 3

8 0
3 years ago
Five increased by the product of a number and 9 is greater than -27<br> As an inequality
Brut [27]

Answer:

brhnrnr e euebe ehe we je euebe ejeje

3 0
3 years ago
Can someone help me solve for x &amp; explain how they got it please?? i have a test tomorrow!!
Fudgin [204]

Answer:

36=x^2+5x

x^2+5x-36=0

(x+9)(x-4)

x= 4

x= -9

The Answer can be 4 or -9, see which option you have.

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • \angle x∠xangle, x and \angle y∠yangle, y are supplementary angles. \angle y∠yangle, y measures 156^\circ156 ∘ 156, degrees. Wha
    10·1 answer
  • after losing 25 pounds an individual weighs 105 pounds more than one third of his previous weight. what is the previous weight ?
    13·2 answers
  • If x2 = 30, what is the value of x? (5 points)
    7·1 answer
  • 1=12-w <br><br> Help solve please
    9·1 answer
  • Evaluate 6 - 2(-1) + | -5 |
    9·1 answer
  • This is dueeeeeee tomorow please help
    8·1 answer
  • Help me pls..............
    9·2 answers
  • Find the surface area of the solid figure. The surface area of the figure is (use whole numbers only):
    6·1 answer
  • Need the answer plzz
    5·1 answer
  • 4+5(6p+2=24<br> ........
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!