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3 years ago

12

3a+4b-3c+a-7b-2c simplification of algebraic expression

1 answer:

diamong [38]3 years ago

4 0

Answer:

$4a - 3b - 5c$

That is the answer

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Scott asked Bud if

djverab [1.8K]

I think you used the wrong subject.

your answer is B though.

4 0

3 years ago

Read 2 more answers

A man weighing 800 N is hanging from a 2 mm diameter titanium wire with a cross-section of 3 x 10^-6 m^2. Will the wire break?

DENIUS [597]

Answer:

Since stress is greater than ultimate strength, the wire will break.

Step-by-step explanation:

The titanium wire is experimenting an axial load. Ultimate strength equals $2.20\times 10^{8}\,Pa$ . The wire shall break if and only if stress is at least equal to ultimate strength. The equation for axial stress ( $\sigma$ ), measured in pascals, in the wire with circular cross-section is:

$\sigma = \frac{4\cdot F}{\pi\cdot D^{2}}$ (1)

Where:

$F$ - Axial force, measured in newtons.

$D$ - Cross-section diameter, measured in meters.

Please notice that axial force is the weight of the man hanging from wire.

If we know that $F = 800\,N$ and $D = 0.002\,m$ , then the axial stress experimented by the titanium wire is:

$\sigma = \frac{4\cdot (800\,N)}{\pi\cdot (0.002\,m)^{2}}$

$\sigma \approx 2.546\times 10^{8}\,Pa$

Since stress is greater than ultimate strength, the wire will break.

3 0

3 years ago

Construct a quadrilateral ABCD in which AB = 4 cm, BC = 7 cm, angle A = angle C = 105 degree

Lelu [443]

Answer: see attachment

<u>Step-by-step explanation:</u>

Since A = C = 105° and D = 60°,

then A + B + C + D = 360°

105° + B + 105° + 60° = 260°

B + 270° = 360°

B = 90°

7 0

4 years ago

5 rubber stamps cost $9.70.

Ratling [72]

E None of the above

8 0

3 years ago

Marshall's office had already recycled 2 kilograms this year before starting the new recycling plan, and the new plan will have

Alona [7]

Answer: w x 4 + 2 = p

Step-by-step explanation:

W = Week

P = Paper

4 kg a week would be 4 x w

you also must add the 2 kilograms at the start of the year

5 0

3 years ago