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babunello [35]
3 years ago
7

A line passes through the point (9. -9) and has a slope of -4/3.

Mathematics
1 answer:
professor190 [17]3 years ago
6 0

Answer:

y =  \frac{ - 4}{3} x + 3

Step-by-step explanation:

using \: point \: slope \: form \\ y - y1 = m(x - x1) \\ y  + 9=  \frac{ - 4}{3} (x - 9) \\ y  + 9=    \frac{ - 4}{3}x   + 12\\ y =  \frac{ - 4}{3} x  + 3

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Someone plz. help me with 7 and 8
Anon25 [30]
7.) the equation of the circle is
(x - 3)^2 + (y - 4)^2 = 25

If you substitute the point in you get
(6-3)^2 + (8-4)^2 = 25
3^2 + 4^2 = 25
9 + 16 = 25
25 = 25

Both sides of the equation are the same so it proves it lies on the circle

8.) you add the x coordinates together and divide by 2
7 + 4 = 11
11/2 = 5.5
You use +7 because you need to find the midpoint.
You then add 5.5 to - 7 or - 5.5 from 4
-7 + 5.5 = - 1.5

You do the same for y coordinates
6+5 = 11
11/2 = 5.5
6-5.5 = 0.5

So the coordinates of Rachel's house are
(-1.5, 0.5)
3 0
3 years ago
2 numbers total 47 and have a difference of 21 what are the two numbers
murzikaleks [220]

x+y = 47

x-y = 21

------------  add together

2x =68  divide by 2

x=34

x+y = 47

34+ y = 47

subtract 34 from each side

y = 13

the two numbers are 34 and 13


7 0
3 years ago
You decide to create a business selling handmade
DerKrebs [107]

Answer:

$16.40

Step-by-step explanation:

6 0
3 years ago
Which of the following is the graph of the solution set of t – 4 ≥ 4t + 8 or 3t >14 – 4t?
Stells [14]

Answer:

Option (C)

Step-by-step explanation:

There are two inequalities,

t - 4 ≥ 4t + 8 ------(1)

3t > 14 - 4t ------(2)

By simplifying inequality (1),

t - 4 ≥ 4t + 8

t ≥ 4t + 8 + 4

t ≥ 4t + 12

t - 4t ≥ 12

-3t ≥ 12

t ≤ \frac{12}{(-3)}

t ≤ -4

By solving inequality (2),

3t > 14 - 4t

3t + 4t > 14

7t > 14

t > \frac{14}{7}

t > 2

From the given graphs, Option (C) will be the answer.

4 0
3 years ago
10
irakobra [83]

We have that the total length of paper needed to cover all the tables is

X=288.5ft

From the question we are told that:

Number of tables n=36

Length of tablel=8

Extension e=3 inch =>0.25feet

Generally, the equation for the Total length  tables is mathematically given by

l_t=n*l\\\\l_t=36*8

l_t=288ft

Therefore with an extension of 0.25ft at both end we have the Total length of  tablecloths to be

X=l_t+2(e)\\\\X=288ft+2(0.25)

X=288.5ft

In conclusion

The total length of paper needed to cover all the tables is

X=288.5ft

For more information on this visit

brainly.com/question/12595620

6 0
3 years ago
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