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Bingel [31]
3 years ago
5

Find the slope of the line that passes through (-66, -21) and (-67, 20)

Mathematics
1 answer:
Sphinxa [80]3 years ago
5 0
The straight line is given by the equation
y=kx+b
We substitute coordinates of points 
-21=-66k+b (1)
2=-67k+b (2)
We give a system of equations
Solution of this system:
(1) b=66k-21
(2) 20=-67k+66k-21
20=-k-21
k=-21-20
k=-41
b=-41*66-21=-2727
y=-41x-2727

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3 sin^{2} x +cos 2x= (5/4)<br>answer in radians
Vera_Pavlovna [14]

Answer:

I believe it's 0.540717

Step-by-step explanation:

3(sin(2))x+(cos(2))(x)=5/4

Simplify: 2.311745x=5/4

Divide: 2.311745x/2.311735=5/4/2.311745

x=0.540717

6 0
2 years ago
Complete the missing value/help?
blagie [28]

What it is basically asking is if Y = -4, find the value of x in the equation 6x + 7y = 4x + 4y

To solve this you just need to plug in -4 for y and solve for x

6x + 7(-4) = 4x + 4(-4)

6x - 28 = 4x - 16

Now isolate x by adding 28 to both sides

6x - 28 + 28 = 4x - 16 + 28

6x = 4x + 8

and subtract 4x from both sides

6x - 4x = 4x - 4x + 8

2x = 8

divide both sides by 2

2/2x = 8/2

x = 4

x = 4, y = -2

Answer: (4, - 2)

Hope it helps :)

Bransliest would be appreciated

5 0
2 years ago
Read 2 more answers
Does 30, 40, 45 make a right triangle?
mr Goodwill [35]

Answer:

no these degrees do not make a right triangle

4 0
2 years ago
Read 2 more answers
Jaxson and his friends went into a movie theater and they want to buy some bags of popcorn and pretzels. Each bag of popcorn cos
katovenus [111]

Answer:

$22 for popcorn and $8 for pretzels together it would be $30

Step-by-step explanation:

5 0
2 years ago
A food processor for $149.50 cash, or $5.00 down and $10.00 per month for 15 months
ddd [48]

Answer:

Difference in cash and plan = $155 - $149.50 = $5.50

Interest Rate = 3.68%

Step-by-step explanation:

Given:A food processor for $149.50 cash, or $5.00 down and $10.00 per month for 15 months

A food processor by cash = $149.50

Payment plan =  Down payment + $10*15 months

= $5 + $10*15

= $5 + $150

Payment plan = $155

Difference in cash and plan = $155 - $149.50 = $5.50

Now we have to find the interest rate

= (difference/original)*100

= (5.50/149.50)*100

Interest Rate = 3.68%

6 0
3 years ago
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