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sdas [7]
2 years ago
10

What is the equation of a line parallel to -x+3y=-6 that passes through 9,-1

Mathematics
1 answer:
Natali [406]2 years ago
5 0

Answer:

{ \tt{ - x + 3y =  - 6}} \\ { \tt{3y = x - 6}} \\ { \tt{y =  \frac{1}{3}x - 2 }}

• For parallel line, their gradients are the same:

→ m = ⅓

• From general equation of a line;

→ \: { \tt{y = mx + c}} \\

• For the point (9, -1):

→ \: { \tt{ - 1 = (9 \times  \frac{1}{3} ) + c}} \\  \\→ \:  { \tt{ - 1 = 3 + c}} \\  \\ → \: { \tt{c =  - 4}}

therefore:

→ \: { \boxed{ \tt{y =  \frac{1}{3}x - 4 }}}

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Nookie1986 [14]

Answer:

B. sometimes

Step-by-step explanation:

Consecutive angles of a parallelogram are same side interior angles of two parallel lines cut by a transversal, so they are always supplementary.

Supplementary angles are two angles whose measures add to 180 deg.

If two angles are supplementary and one angle measures 90, then the other angle also measures 90 deg, and the two angles are congruent. If one angle measures less than 90 deg, then the other measure more than 90 deg and are not congruent. Therefore, these angles may or may not be congruent.

Answer: sometimes

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3 years ago
What is the volume of this solid figure made with cubes?
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Step-by-step explanation:

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2 years ago
The circumference of a sphere was measured to be 82 cm with a possible error of 0.5 cm.
Nat2105 [25]

Answer:

A) Maximum error = 170.32 cm³

B)Relative error = 0.0575

Step-by-step explanation:

A) Formula for circumference is: C = 2πr

Differentiating with respect to r, we have;

dC/dr = 2π

r is small, so we can write;

ΔC/Δr = 2π

So, Δr = ΔC/2π

We are told that ΔC = 0.5.

Thus; Δr = 0.5/2π = 0.25/π

Now, formula for Volume of a sphere is;

V(r) = (4/3)πr³

Differentiating with respect to r, we have;

dV/dr = 4πr²

Again, r is small, so we can write;

ΔS/Δr = 4πr²

ΔV = 4πr² × Δr

Rewriting, we have;

ΔV = ((2πr)²/π) × Δr

Since C = 2πr, we now have;

ΔV = (C²/π)Δr

ΔV will be maximum when Δr is maximum

Thus, ΔV = (C²/π) × 0.25/π

C = 82 cm

Thus;

ΔV = (82²/π) × 0.25/π

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B) Formula for relative error = ΔV/V

Relative error = 170.32/((4/3)πr³)

Relative error = 170.32/((4/3)C³/8π³)

Relative errror = 170.32/((4/3)82³/8π³)

Relative error = 170.32/2963.744

Relative error = 0.0575

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3 years ago
Use the coordinates to find the length of each side of the rectangle. Then find the perimeter. L(3,3), M(3,5), N(7,5), P(7,3)
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