All categories

3 years ago

WWhat is the equation of the line that passes through the point (-5, -2) and has a

Mathematics

1 answer:

Agata [3.3K]3 years ago

7 0

Answer:

$y _{1} - y = m (x _{1} - x) \\ y + 2 = - 1.2(x + 5) \\ y = - 1.2x - 6 - 2 \\ y = - 1.2x - 8$

You might be interested in

The difference of two perfect cubes is 386. If the cube root of the smaller of the two numbers is 7, then the cube root of the l

choli [55]

Answer:

Step-by-step explanation:

Let the two perfect cubes be x and y where x > y.

According to the given conditions:

${x}^{3} - {y}^{3} = 386...(1) \\ y = 7...(2) \\ plug \: y = 7 \: in \: equation \: (1) \\ {x}^{3} - {7}^{3} = 386 \\ {x}^{3} - 343 = 386 \\ {x}^{3} = 343 + 386 \\ {x}^{3} = 343 + 386 \\ {x}^{3} = 729 \\ x = \sqrt[3]{729} \\ x = 9$

Thus the cube root of the larger number is 9.

8 0

4 years ago

What is the sum of the seven terms of the geometric series 2- 8+32-...?

egoroff_w [7]

The first term is 2 and the common ratio = -8/2 = -4

S7 = 2 * (-4)^7 - 1
------------- = 6554 answer
-4-1

6 0

3 years ago

I dont know how to do this, please help

IgorLugansk [536]

Answer: B= 11

Step-by-step explanation:

8 0

3 years ago

Find the volume of this rectangular pyramid.

LekaFEV [45]

Answer:

25 ft

Step-by-step explanation:

You need to add 9+7+9.

There are two 9s and just one 7. 9+9 is 18 and 18+7 is 25

5 0

3 years ago

Which function is the inverse of ? f(x)=50,000(0.8)^x

IrinaK [193]

Answer:

y=log(x)−log(50000)log(0.8)

Explanation:

write as : y=50000(0.8)x

Taking logs:

log(y)=log(50000)+log(.(0.8)x.)

But log(.(0.8)x.) is the same as xlog(0.8)

Thus
x=log(y)−log(50000)log(0.8)

Now swap the x'x and the y's giving:

y=log(x)−log(50000)log(0.8)

my teacher helped a little bit

4 0

3 years ago