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2 years ago

What is the slope of the graph y=-3×I need help

Mathematics

2 answers:

zepelin [54]2 years ago

6 0

Answer:

-3

Step-by-step explanation:

the graph is the coefficient so it is the number before x

Rama09 [41]2 years ago

3 0

Answer:

-3

Step-by-step explanation:

Slope describes the rate of change between the change in y and the change in x. What the equation tells us is that y decreases by 3 each time (aka. increasing by -3) when x increases by 1. This gives us a slope of -3.

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Factor completely and then place the factors in the proper location on the grid.<br> x2 + 13x + 36

Alexxandr [17]

1. x^2 + 13x + 36 = 0

using powerful & time-sparing quadratic formula :

delta = 13^2 - 4*1*36 = 25 = 5^2

x1 and x2 = (-13 -/+ 5)/2 = -9 and -4

x^2 + 13x + 36 = (x+9)(x+4)

2. other way : complete the square

b^2 + 12b + 32 = b^2 + 2*6b + 6^2 - 6^2 + 32

b^2 + 12b + 32 = (b+6)^2 - 4

b^2 + 12b + 32 = (b+6-2)(b+6+2) = (b+4)(b+8)

3. other way : -4 "ovious" solution : (-4)^2 - (-4) -20 = 0

so the other is : -4 . a2 = -20/1 ---> a2 = 5

a^2 - a - 20 = (a-5)(a+4)

4 0

3 years ago

Read 2 more answers

Solv for x for all of these 1. 3x+6=21 2. 33=7x-9 3. 28=7+x need to know now please help !!!!!!

-Dominant- [34]

Answer:

<h3> $\boxed{ \sf{ \bold{1. \: \: \: x = 5}}}$ </h3>

$\boxed{ \sf{ \bold{2. \: \: x = 6}}}$

$\boxed{ \bold{ \sf{3. \: \: x = 21}}}$

Step-by-step explanation:

1. $\sf{3x + 6 = 21}$

Move constant to right hand side and change its sign

⇒ $\sf{3x = 21 - 6}$

Subtract 6 from 21

⇒ $\sf{3x = 15}$

Divide both sides of the equation by 3

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

Calculate

⇒ $\sf{x = 5}$

--------------------------------------------------------

2. $\sf{33 = 7x - 9 }$

Swap the sides of the equation

⇒ $\sf{7x - 9 = 33}$

Move constant to right hand side and change it's sign

⇒ $\sf{7x = 33 + 9}$

Add the numbers

⇒ $\sf{7x = 42}$

Divide both sides of the equation by 7

⇒ $\sf{ \frac{7x}{7} = \frac{42}{7} }$

Calculate

⇒ $\sf{x = 6}$

---------------------------------------------------------

3. $\sf{28 = 7 + x}$

Swap the sides of the equation

⇒ $\sf{7 + x = 28}$

Move constant to right hand side and change it's sign

⇒ $\sf{x = 28 - 7}$

Subtract 7 from 28

⇒ $\sf{x = 21}$

Hope I helped!

Best regards!!

7 0

3 years ago

29. A number divided by 8 gives answer 27, remainder 4. Find the number.

Whitepunk [10]

Answer:

220

Step-by-step explanation:

Divisor • Quotient + Remainder = Dividend

The divisor is 8, the quotient is 27, the remainder is 4.

27 • 8 = 216; 216+ 4= 220 (Don’t forget that multiplication is commutative, so 8 & 27 can swap places!) 220 is the number that when divided by 8 gives 27 remainder 4.

In simpler way

Dividend = divisor × quotient + remainder.

Divisor = 8, quotient = 27, remainder = 4.

Dividend = (8×27)+4,

= 216+ 4

= 220

The number is 220.

For proof