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Schach [20]
3 years ago
6

What is the equation of the line that passes through the point (-1, -7) and has a slope of 2?

Mathematics
1 answer:
o-na [289]3 years ago
7 0

Answer:

(a,b)------>(-1,-7)let

now

m(x-a)=(y-b)

2(x+1)=(y+7)(where m=slope

2x+2=y+7

2x-y=7-2

2x-y=5 is a required equation.

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Match each solution to the equation it solves -3 -2 3 7
VMariaS [17]

Answer:

42

Step-by-step explanation:

Solve backwards

37+3+2=42

Double check

42-3-2=37

4 0
3 years ago
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Ivahew [28]

Answer:

B

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8 0
3 years ago
neda sells televisions she earns a fixed amount for each television and an additional $15 if the buyer gets an extended warranty
just olya [345]

Answer:

$5

Step-by-step explanation:

15x18=270

1170-270=900

900/18=50

4 0
3 years ago
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Help guys help help brainliest answer​
I am Lyosha [343]
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4 0
3 years ago
The height in feet of a bottle rocket in given by h(t)=160t-16t^2 where t is the time in seconds. How long will it take for the
tatiyna

a) 10 sec

b) 256 feet

Step-by-step explanation:

a)

The height of the rocket above the ground at time t is described by the second-order equation

h(t)=160t-16t^2 (1)

where:

t is the time, in seconds

h(t) is the height, in feet

160 represents the initial vertical velocity of the rocket

-16 represents the acceleration due to gravity (downward)

The rocket will return to the ground when the height is zero, so when

h(t)=0

Substituting into eq(1) and solving for t, we find:

0=160t-16t^2\\0=16t(10-t)=0

which has two solutions:

t = 0 (initial instant, so when the rocket starts its motion)

t = 10 s --> this is the time at which the rocket returns to the ground

b)

The height of the rocket is given by

h(t)=160t-16t^2

t is the time, in seconds

h(t) is the height, in feet

Here we want to find the height of the rocket after 2 seconds: to do that, we just need to substitute

t = 2 sec

into the equation of the height.

By doing so, we find:

h(2)=160\cdot 2 -16(2)^2=256 ft

Therefore, the height of the rocket after 2 seconds is 256 feet.

4 0
3 years ago
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