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AleksAgata [21]
3 years ago
15

Write the equation of the line that passes through the given point and has the given slope:

Mathematics
2 answers:
My name is Ann [436]3 years ago
8 0

Answer:

y=-x-9

Step-by-step explanation:

y-y1=m(x-x1)

y-0=-1(x-(-9))

y=-1(x+9)

y=-x-9

bekas [8.4K]3 years ago
3 0

Answer: y + x + 9 = 0

Step-by-step explanation:

equation of a line with the following values is

y - y1

-------   = -1

x - x1

enter the values of the coordinate x1 and y1 into the formula above

y - 0

-------    = -1

x - (-9)

y - 0

-------    = -1

x + 9

now cross multiply to have it in a linear form

y - 0 = -1( x + 9 )

y - 0 = -x - 9

y + x = -9

y + x + 9 =0

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Kristie has taken five tests in science class. The average of all five of Kristie's test scores is 94. The average of her last t
Bingel [31]

Answer:  The average of the first two test scores is 97.

Step-by-step explanation:  Given that Kristie has taken five tests in science class. The average of all five of Kristie's test scores is 94 and the average of her last three test scores is 92.

We are to find the average score of her first two tests.

Let a1, a2, a3, a4 and a5 be teh scores of Kristle in first , second, third, fourth and fifth tests respectively.

Then, according to the given information, we have

\dfrac{a1+a2+a3+a4+a5}{5}=94\\\\\Rightarrow a1+a2+a3+a4+a5=94\times5\\\\\Rightarrow a1+a2+a3+a4+a5=470~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

and

\dfrac{a3+a4+a5}{3}=92\\\\\Rightarrow a3+a4+a5=92\times3\\\\\Rightarrow a3+a4+a5=276~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)

Subtracting equation (ii) from equation (i), we get

(a1+a2+a3+a4+a5)-(a3+a4+a5)=470-276\\\\\Rightarrow a1+a2=194\\\\\Rightarrow \dfrac{a1+a2}{2}=\dfrac{194}{2}\\\\\Rightarrow \dfrac{a1+a2}{2}=97.

Thus, the average of the first two test scores is 97.

6 0
4 years ago
a circus charges $2.50 for kids tickets and $6 for adult tickets last week and twice as many kids attended the circus than adult
aliina [53]
Let
x-----------> the number of kids
y----------> the number of adults

we know that
2.5x+6y=$7150---------> equation 1
x=2y-------------> equation 2
substitute 2 in 1
2.5*[2y]+6y=7150-----> 5y+6y=7150----> 11y=7150-----> y=650
x=2y----> x=2*650----> 1300

the answer is
the number of kids is 1300
5 0
3 years ago
Seven people meet and shake hands with one another. how many handshakes occur ?
Kryger [21]
49 shakes in total. 7x7=49
5 0
3 years ago
Read 2 more answers
Please help I’m struggling
Ivenika [448]

Answer:

ok

Step-by-step explanation:

HAHAHAHAHAHAHAHHAHAHHAHAA

3 0
3 years ago
Shannon's chair is 20 inches tall. How tall is it in centimeters?
JulsSmile [24]

Answer:

50.8 centimeters

Step-by-step explanation:

So, if Shannon's chair is 20 inches tall, you would multiply that by 2.54 in order to get the length in centimeters.

20 x 2.54 = 50.8.

So Shannon's char is 50.8 centimeters tall.

6 0
4 years ago
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