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Bezzdna [24]
3 years ago
10

Which of the following describes a correct process for solving the equation 3(x + 6) = 21 and arrives at the correct solution?

Mathematics
2 answers:
Gnoma [55]3 years ago
6 0

Answer:

A. Divide both sides of the equation by 3, and then subtract 6 from both sides of the equation. The solution is x = 1.

Step-by-step explanation:

3(x + 6) = 21

Divide both sides by 3

(x + 6) = 7

Subtract 6 from each side

x = 7-6

x=1

wolverine [178]3 years ago
6 0

Answer:

x=1

Step-by-step explanation:

multiply 3 with (x+6) resulting into 3x+18=21

cross-multiply and divide through by 3.

There u go

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A collection of nickels and quarters is worth 2.85 . There are 3 more nickels than quarters how many nickels and quarters are th
Zolol [24]

A nickel is equal to 5 cents or 0.05 dollars.

A quarter is equal to 25 cents or 0.25 dollars.

Let number of nickels be = n

Let number of quarters be = q

0.05n+0.25q=2.85    ...........(1)

As it is given, there are 3 more nickels than quarters so equation becomes,

n=q+3   ................(2)

Plug in the value of 'n' from (2) in (1)

0.05(q+3)+0.25q=2.85

= 0.05q+0.15+0.25q=2.85

0.30q=2.70

q=9

As n=q+3 we get, n=9+3=12

Hence, there are 12 nickels and 9 quarters.

3 0
3 years ago
HELPPP ASAP SHOW UR WORK i’ll mark brainliest !!
Lemur [1.5K]

Answer:

c=-24

Step-by-step explanation:

to find C we have to plug in the coordinate given to us

12(4)+4(-6)+C= 0

48-24+c=0

24+c=0

c=-24

6 0
3 years ago
Write an expression to represent:<br> Nine less than the quotient of two and a number z.
Nina [5.8K]

Answer:

2 / z - 9

Step-by-step explanation:

Don't worry division always goes before subtraction so you don't need any parenthesis.

Tell me if I'm wrong :)

8 0
3 years ago
In ΔNLM, if m∠M=(4x-4)°, m∠L=(3x+12)°, and m∠N=(6x+3)°, what is x?
GarryVolchara [31]

Answer:

  x = 13

Step-by-step explanation:

The sum of angle measures in a triangle is 180°.

  m∠M + m∠L + m∠N = 180°

  (4x-4)° + (3x+12)° + (6x+3)° = 180°

  13x +11 = 180 . . . . . . collect terms, divide by °

  13x = 169 . . . . . . . . . subtract 11

  x = 13 . . . . . . . . . . . . . divide by 13

5 0
3 years ago
Analyze the diagram below and answer the question that follows.
Vlada [557]
This would be a scalene triangle, because all of the sides are different lengths.

The correct answer is C.

6 0
3 years ago
Read 2 more answers
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