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siniylev [52]
3 years ago
15

Find the value of 7x+2y when x=2 and y=-9

Mathematics
2 answers:
Varvara68 [4.7K]3 years ago
8 0

Answer:

32

Step-by-step explanation:

7×18+2×18=32

x=14

y=18

Have a great day!

Nostrana [21]3 years ago
6 0
Answer = -4

Step-by-Step Explanation:

Given: x = 2, y = -9

Therefore, substituting the values
= 7x + 2y
= 7(2) + 2(-9)
= 14 + -18
= 14 - 18
= -4
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-11/15 divided by 1/12​
Salsk061 [2.6K]

Answer:

-8 \frac{4}{5}

Step-by-step explanation:

\frac{-11}{15} ÷ \frac{1}{12} =  \frac{-11}{15} x 12

             = \frac{-132}{15} = -8 \frac{4}{5}

8 0
3 years ago
What's the explicit formula for the sequence :")
zzz [600]

Hello from MrBillDoesMath!

Answer:

a(n) = 12 - 3(n-1)          , n = 1,2,3.,,



Discussion:

The terms are 12, 9, 6, 3  so we are apparently subtracting 3 from each succeeding term. . Hence

a(n) = 12 - 3(n-1)          , n = 1,2,3.,,


Thank you,

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7 0
3 years ago
MS Geometry Review:Question 4
dimaraw [331]

Answer:

9.42

Step-by-step explanation:

It is 9.42 because if you multiply the radius by 2 to get diameter you multiply the diameter by 3.14 to get your final answer which is 9.42   :)

3 0
3 years ago
find the twelfth term of the arithmetic sequence whose ninth term is 50 and whose sixteenth term is 85
LuckyWell [14K]

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5 0
3 years ago
Write an equation that is perpendicular to and 3x+y=3 whose y-intercept 5. Anyone please help me, no link just explain how to do
Liula [17]

Answer:

y = \frac{1}{3}x + 5

Step-by-step explanation:

By definition, two lines are perpendicular if and only if their slopes are negative reciprocals of each other:  m = - \frac{1}{m_{2} }, or equivalently, m_{1} * m_{2} = -1.

Given our linear equation  3x + y = 3  (or y = -3x + 3):

We can find the equation of the line (with a y-intercept of 5) that is perpendicular to y = -3x + 3 by determining the negative reciprocal of its slope, -3, which is \frac{1}{3}.

To test whether this is correct, we can take first slope,  m_{1} = -3,  and multiply it with the negative reciprocal slope m_{2} = \frac{1}{3} :

m_{1} * m_{2} = -1

-3 * \frac{1}{3}  = -1

Therefore, we came up with the correct slope for the other line, which is  \frac{1}{3}.

Finally, the y-intercept is given by (0, 5). Therefore, the equation of the line that is perpendicular to 3x + y = 3 is:

y = \frac{1}{3}x + 5

7 0
3 years ago
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