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3 years ago

PLEASE HELPPPP PLEASEEEEEEE ILL GIVE BRAINLIEST!

Mathematics

2 answers:

boyakko [2]3 years ago

8 0

Answer:

8.16 > 8.150

Step-by-step explanation:

Romashka-Z-Leto [24]3 years ago

3 0

Answer:

3rd one

Step-by-step explanation:

i got it correct

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A triangle, ABC, has angle measures of 82', 75', and 23' and no sides equal (congruent) in length. How would this

andreev551 [17]

Answer:

No sides equal means scalene.

All angles less than 90 degrees acute triangle.

http://www.1728.org/triang.htm

Step-by-step explanation:

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3 years ago

A force of 8 lb is required to hold a spring stretched 8 in. beyond its natural length. How much work W is done in stretching it

-BARSIC- [3]

Answer:

The work done in stretching it from its natural length to 14 in. beyond its natural length is W=8.17 ft-lb.

Step-by-step explanation:

We know that a force of 8 lb is required to hold a spring stretched 8 in. beyond its natural length.

This let us calculate the spring constant k as:

$F=kx\\\\k=F/x=(8 \;lb)/(8\;in)=1\;lb/in$

We know that work is, in an scalar form, the product of force and distance.

The force F is equal to the spring constant multiplied by the distance from the natural length.

Then, as the force changes with the distance from the natural length, we have to calculate integrating:

$W=\int_0^{14}F\,dx=\int_0^{14}kx\,dx\\\\\\W=\dfrac{1}{2}kx^2\left|^{14}_0=\dfrac{1}{2}(1\,lb/in)(14 \,in)^2-\dfrac{1}{2}(1\,lb/in)(0 \,in)^2$

$W=98lb\cdot in-0lb-in\\\\W=98(lb\cdot in)\cdot \dfrac{1 \,ft}{12\,in}=8.17\;lb\cdot ft$

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3 years ago

Which r-value suggests a strong negative correlation? A. r=0.97351 B. r= -0.27331 C. r= -0.97351 D. r= 0.27331

Archy [21]

Its C hope this helps

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3 years ago

A sphere's radius is multiplied by 3. How is its surface area affected?

Montano1993 [528]

Answer:

Step-by-step explanation:

For all shapes, the surface area will go up by a factor of 9 (3^2). This is true of spheres, cones, cubes, pyramids, torusses, everything.

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3 years ago

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RSB [31]

Answer: it’s on quizlet

Step-by-step explanation:

Look ok quizlet most of the answers are there

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