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Anastasy [175]
3 years ago
15

Please look at the image

Mathematics
1 answer:
alina1380 [7]3 years ago
8 0

Answer:

r \geqslant  - 5

Step-by-step explanation:

50 - 4r \leqslant 70

- 4r \leqslant 20

\frac{ - 4r}{ - 4}  \geqslant  \frac{20}{ - 4}

r \geqslant  - 5

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Find a parametrization of the line in which the planes x + y + z = -6 and y + z = -8 intersect.
rewona [7]

Answer:

L(x,y) = (2,-8,0) + (0,-1,1)*t

Step-by-step explanation:

for the planes

x + y + z = -6  and y + z = -8

the intersection can be found subtracting the equation of the planes

x + y + z - ( y + z ) = -6 - (-8)

x= 2

therefore

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using z as parameter t and the point (2,-8,0) as reference point , then

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another way of writing it is

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6 0
3 years ago
A grading machine can grade 48 tests in 1 minute. How
S_A_V [24]
\bf \begin{array}{ccll}
tests&minutes\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
48&1\\
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3 years ago
Which inequality is the solution to 20 + 2 < x/3 - 8?
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Answer:

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Step-by-step explanation:

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4 0
2 years ago
Read 2 more answers
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