Which method would you use to solve the following equation?

Answer:

x= -10

Step-by-step explanation:

distribute 7 to x and 3: 7x + 21 = -49

subtract 21 from both sides to isolate the variable: 7x= -70

divide both sides by 7 to find x: x= -10

Answer:

X = -10

Step-by-step explanation:

1.- 7x + 21 = -49

Subtract 21 on both sides of the equal sign

You should have:

2.- 7x = -70

Divide 7 on both sides of the equal sign

You should get the answer:

X = -10

The relation between multiplying and dividing two negative fractions is needed.

When multiplying and dividing two negative fractions the answer will be always positive.

Let [tex]-\dfrac{a}{b}[/tex] be one fraction

and [tex]-\dfrac{c}{d}[/tex] be another fraction

Let us multiply them

[tex]-\dfrac{a}{b}\times -\dfrac{c}{d}=+\dfrac{ac}{bd}[/tex]

Let us divide them

[tex]\dfrac{-\dfrac{a}{b}}{-\dfrac{c}{d}}[/tex]

This can also be written as

[tex]-\dfrac{a}{b}\times -\dfrac{d}{c}=+\dfrac{ad}{bc}[/tex]

Since, multiplication and division are the inverse of each other the negative signs cancel each other and the sign is positive.

Hence, when multiplying and dividing two negative fractions the answer will be always positive.

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Answer:

20% of 89 is 17.8

89 - 17.8 = 81.2

Answer 20% of 89 is 17.8

89 - 17.8 = 81.2

Step-by-step explanation:

Answer: .667 yard

Step-by-step explanation:

Hope this helps

Answer:

0.66666666667 Yards

Step-by-step explanation:

google is always right

Work Shown:

|18-4|

|14|

14

You subtract 18-4 to get 14. Applying absolute value on a positive number leads to the same result.

Answer:

14

Step-by-step explanation:

|18 – 4|

First find the value inside the absolute value bars

18-4 is 14

|14|

Then take the non negative value

14

D) 5/6 as 5/6 = 0.833333333333333 and the three will keep repeating

Answer:

D.

Step-by-step explanation:

You meant which one is a repeating decimal.

Okay to find out you would have to divide each.

4 divided by 5 = 0.8

1 divided by 2 = 0.5

3 divided by 4 = 0.75

5 divided by 6 = 0.833333333...

See how the three keeps on repeating? That makes it a repeating decimal.

Hope this helps!!

Answer:

25493

Step-by-step explanation:

Answer:

75 x 152 = 11,400.

Step-by-step explanation:

75 times 152 equals 11,400. You can find this by using a calculator, or you can multiply it out by hand. There's lots of videos on how to multiply things by hand, if you wanted to learn how. Hope this helps! :)

Answer: -6

Step-by-step explanation:

Answer:

S/2πr-r=h

Step-by-step explanation:

so a

Answer:

It's A) [tex]\frac{S}{2\pi r} - r = h[/tex]

Step-by-step explanation:

I'm good at the game.

Answer;

75 degrees

Step-by-step explanation:

80+10=90  90-15=75

Answer:

1.83

Step-by-step explanation:

the sign of a number is the sign before a number therefore the sighn of 6.42 is negative(-) and the sign of 8.25 is positive(+) hence the answer is 1.83

Answer:

Step-by-step explanation:

I dont see the drawling...

Answer:

4f

Step-by-step explanation: multiply the outside number (1) by the number inside the parenthesis (4) and then add the letter.

Answer:

120 degrees

Step-by-step explanation:

If it's a 6 sided star, that means that it will be divided into 3 parts (think about how a normal 5-point star has 10 sides). That means that we divide 360 (total number of degrees in a full rotation) by 3 (number of sections) = 120

Answer:

6/12

Step-by-step explanation:

all of the other 3 equal 8/12

Answer:

[tex]\angle AFY=140^\circ[/tex]

[tex]\angle LIM=117^\circ[/tex]

Step-by-step explanation:

The sum of interior angles of a polygon of n sides is:

[tex]S=180^\circ (n-2)[/tex]

The image shows a 6-side polygon. The sum of the interior angles is:

[tex]S=180^\circ (6-2)=720^\circ[/tex]

The sum of all the shown interior angles must equal 900°:

[tex]125+100+y+117+121+y+23=720[/tex]

Simplifying:

[tex]486+2y=720[/tex]

Solving:

[tex]2y=720-486[/tex]

[tex]2y=234[/tex]

[tex]y=234 / 2=117[/tex]

y=117°

Thus the angle AFY is:

[tex]\angle AFY=y+23=117+23=140[/tex]

[tex]\boxed{\angle AFY=140^\circ}[/tex]

[tex]\angle LIM=y=117[/tex]

[tex]\boxed{\angle LIM=117^\circ}[/tex]

Answer:

J''(- 3, 3 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x )

Thus J(1, 1 ) → J'(- 1, 1 )

Under a dilatation with scale factor 3, multiply each of the coordinates of J' by 3, that is

J'' = (3(- 1), 3(1)) = (- 3, 3 )

Answer: 9x^3+14

use SYMBOLAB

Answer:

(x+2)(x+7)

Step-by-step explanation:

A trick I learned was to write out the factors of 14 or "c", and if two factors add up to that number, then the two factors are the answer.

Answer:35 you are welcome

Step-by-step explanation:

Answer:

.25

Step-by-step explanation:

Answer:

100% Sure its b

Step-by-step explanation:

Answer:

B.)y = 1.50x + .75

Step-by-step explanation:

Answer:

It's asking you to add right? if it's not tell me what it's asking and i'll re-do it

if so your answer should be: x3 + 39

Answer:

227 dollars left

Step-by-step explanation:

1099-872

227

Answer: 42121005

Step-by-step explanation: A hexadecimal number is a number expressed in the base-16 number system, which uses 16 different symbols (0 to 9, A to F). In quinary number or base-5 number system we use 5 different symbols (0 to 4)

Answer:

5p-6q or 5p+ (-6q)

If you are looking to create one equation, then combine like terms.

2p+3p and -5q + (-q or 1)

5p and -6q

5p-6q or 5p+ (-6q)