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3 years ago

-5v+6=-12+62 What is v?

Mathematics

2 answers:

Elodia [21]3 years ago

5 0

It’s -8.8, I got this because I don’t even know sorry:\

sattari [20]3 years ago

4 0

Answer:

-8.8

Step-by-step explanation:

combine terms on right side of equal sign(50)

know your equation is -5v+6=50

subtract 6 from both sides so you know have -5v=44

then divide both sides by negative five so know you have v=-8.8

(plug in -8.8 to check)

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What is equivalent to x2+ 14x = -13

postnew [5]

Answer:

X= 1 AND 13

Step-by-step explanation:

x2+14x = -13

by completing the square method

you add the square of half the coefficient of b to both sides

which is (14/2)^2

x^2+14x+(7^2) = -13 +(7^2)

x^2 + 7^2 = -13 + 49

x^2 + 7^2 = 36

(x + 7)^2 = 36

find the square root of both sides

(x+7) = + or - 6

x=7-6 ; 1

x= 7+6 ; 13

8 0

2 years ago

Work out m and c for the line: 3 y + 6 x = − 3

Usimov [2.4K]

Answer:

m is -2 and c is -1

Step-by-step explanation:

• Let's first phrase out the general equation of a line

${ \rm{y = mx + c}}$

m is the slope
c is the y-intercept

[ remember that a general line equation must be in slope - intercept form as shown above ]

• from our question, we are given the equation;

${ \rm{3y + 6x = - 3}}$

• let's make y the subject in order to make the equation in slope - intercept format.

→ remember to apply "subject making knowledge"

${ \rm{3y = - 3 - 6x}} \\ \\ { \rm{3y = - 6x - 3}} \\ \\ { \rm{ \frac{3y}{3} = \frac{ - 6x}{3} - \frac{3}{3} }} \\ \\ { \boxed{ \rm{y = - 2x - 1}}}$

• The above boxed equation is now a general equation. Let's extract out slope, m and y-intercept, c

${ \rm{m \: \dashrightarrow \: - 2}} \\ \\ { \rm{c \: \dashrightarrow \: - 1}}$

8 0

3 years ago

The scale on a map says that 6 cm represents 15 km. What distance on the map in centimeters represents 20 kilometers?

ale4655 [162]

Answer:

8 centimeters.

Step-by-step explanation:

$6cm\ on\ map\ -> 15km\\$

Divide 3 both sides:

$2cm\ on\ map\ -> 5km$

Multiply 4 on both sides:

$8cm\ on\ map\ -> 20km$

8cm on the map represents 20km.

4 0

3 years ago

Yooo help plz :) ASAP ASAP ASAP

german

The 3rd one
You can factor 3 out of each term in the numerator. And then divide it by the 3 in the denominator.

3 0

3 years ago

Read 2 more answers

CAN ANYONE HELP ME PLZ WIHT JUST 4QUESTIONS

Makovka662 [10]

Yeah sure! Just make sure to post them haha :)

6 0

3 years ago