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3 years ago

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

1 answer:

4 0

The correct solution is C

Subtract 6 from both sides of the equation
3x + 6 - 6 = 21 - 6
3x = 15

Then divide both sides by 3

$\frac{3x}{3} = \frac{15}{3}$

x = 5

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Please help me on this question.

Kay [80]

Answer:

3×(27-7) says to subtract 7 from 27 first, then multiply with 3; but 3×27-7 says to multiply 3 by 27 first ,then subtract 7.

The second bullet is the correct option

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3 years ago

Given that the diameter of Circle A is 6 cm , and the radius of Circle B is 18 cm , what can be concluded about the two circles?

ELEN [110]

Answer:

The radius of circle B is 6 times greater than the radius of circle A

The area of circle B is 36 times greater than the area of circle A

Step-by-step explanation:

we have

Circle A

$D=6\ cm$

The radius of circle A is

$r=6/2=3\ cm$ -----> the radius is half the diameter

Circle B

$r=18\ cm$

Compare the radius of both circles

$3\ cm< 18\ cm$

$18=6(3)$

The radius of circle B is six times greater than the radius of circle A

Remember that , if two figures are similar, then the ratio of its areas is equal to the scale factor squared

All circles are similar

In this problem the scale factor is 6

$6^{2}=36$

therefore

The area of circle B is 36 times greater than the area of circle A

8 0

3 years ago

HURRY PLEASE

MAVERICK [17]

Answers - from top to bottom

$7(x - 2) = x + 16$
$distributive \: property$
$addition \: property \: of \: equality$
$7x = x + 30$
$subtraction \: property \: of \: equality$
$6x = 30$
$division \: property \: of \: equality$
$simplifying$

8 0

3 years ago

Read 2 more answers

How can you simplify No viruses please

Alexeev081 [22]

Answer:

In order to simplify a fraction there must be:

A number that will divide evenly into both the numerator and denominator so it can be reduced, or

The numerator must be greater than the denominator, (an improper fraction), so it can be converted to a mixed number.

Step-by-step explanation:

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2 years ago

Fred solved the equation 8(3x – 7) = -6(x + 7) + 4 as shown.

OleMash [197]

Answer: He added 4 to a negative 42 and said it was 46 but its supposed to simplify to -38. X=3/5

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2 years ago