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3 years ago

(-4, 7); m = -2 Help

Mathematics

1 answer:

mixer [17]3 years ago

5 0

Answer:

this is definitely talking about equation of a line .

using the formula

Y-Y1=m( X-X1)

Y-7=-2(x+4)

y-7=2x+8

y = 2x+8+7

y= 2x +15

2x-y+15=0

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Help!!!!!!!!!!!!!!!!!!

vekshin1

1. -3
2. 3
3. 12
4. 0.5
5. 0
6. All real numbers

8 0

4 years ago

Lightning travels much faster than thunder, so lightning is seen before thunder is heard. Using inductive reasoning and the grap

Colt1911 [192]

Answer:

The correct answer is 9 seconds.

Step-by-step explanation:

On your graph, use a ruler and your eye to get the best fitting line.

Then find the time in seconds (45) which is between 40 and 50 on the x-axis.

Go across to the y axis. You will find it is about 9 seconds.

Hope This Helps!

7 0

3 years ago

1] If 221ₓ= 25₁₀ find X 2] if 3ₓ + 34ₓ - 40ₓ = 0 find x 3] if 23ₓ = 1111₂ find x

Olin [163]

$2\cdot x^2+2\cdot x^1+1\cdot x^0=25\\2x^2+2x+1=25\\2x^2+2x-24=0\\x^2+x-12=0\\x^2+4x-3x-12=0\\x(x+4)-3(x+4)=0\\(x-3)(x+4)=0\\x=3 \vee x=-4$

The base can't be negative, therefore $x=3$ .

$3\cdot x^0+3\cdot x^1+4\cdot x^0-4\cdot x^1+0\cdot x^0=0\\3+3x+4-4x=0\\x=7$

$2\cdot x^1+3\cdotx^0=1\cdot 2^3+1\cdot2^2+1\cdot2^1+1\cdot2^0\\2x+1=8+4+2+1\\2x=14\\x=7$

5 0

2 years ago

Is -5 2/3 the multiplicative inverse of 3/-17? PLEASE HELP!!

Ostrovityanka [42]

Answer:

Yes

Step-by-step explanation:

Multiplicative Inverse of rational number:

When we multiply a rational number and its multiplicative inverse, we get 1

$\sf -5 \dfrac{2}{3}=\dfrac{-17}{3}$

Now,multiply this with (3/-17)

$\sf \dfrac{-17}{3}*\dfrac{3}{-17} = 1$

So, -5 2/3 is the multiplicatice inverse of 3/-17

3 0

2 years ago

Slippery Slope

Sauron [17]

Answer:

It would be a tie

Step-by-step explanation:

Skeir 1 in 5000 feet would go 45 seconds.

Skier 2 in 5000 feet would go 50 seconds

If skier 1 lets skeir 2 have a head start, then it means that that it would be 50-5, which would be 45.

6 0

3 years ago