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3 years ago

Chad has a rope that is 20 yards long. How many pieces of rope measuring 4/7 of a yard can he divide his rope into?

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

4 0

Answer:

$35\ pieces$

Step-by-step explanation:

we know that

To find the number of pieces of rope 4/7 of a yard, divide the total length of the rope by 4/7

we have that

The total length of the rope is 20 yards

$\frac{20}{(4/7)}=\frac{20*7}{4}=35\ pieces$

gogolik [260]3 years ago

4 0

Answer:

28 is the answer

Step-by-step explanation:

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Pls help me quickly

Tcecarenko [31]

All real solutions

Everything cancels out once you multiply the top equation by two.
0 = 0 which means all real answers.
I hoping you meant question 3. Good luck!

3 0

3 years ago

Read 2 more answers

Classify the triangle with the given side lengths: 5, 9, 10

Volgvan

This can be a right triangle

6 0

2 years ago

Find the length of the curve. R(t) = cos(8t) i + sin(8t) j + 8 ln cos t k, 0 ≤ t ≤ π/4

arsen [322]

we are given

$R(t)=cos(8t)i+sin(8t)j+8ln(cos(t))k$

now, we can find x , y and z components

$x=cos(8t),y=sin(8t),z=8ln(cos(t))$

Arc length calculation:

we can use formula

$L=\int\limits^a_b {\sqrt{(x')^2+(y')^2+(z')^2} } \, dt$

$x'=-8sin(8t),y=8cos(8t),z=-8tan(t)$

now, we can plug these values

$L=\int _0^{\frac{\pi }{4}}\sqrt{(-8sin(8t))^2+(8cos(8t))^2+(-8tan(t))^2} dt$

now, we can simplify it

$L=\int _0^{\frac{\pi }{4}}\sqrt{64+64tan^2(t)} dt$

$L=\int _0^{\frac{\pi }{4}}8\sqrt{1+tan^2(t)} dt$

$L=\int _0^{\frac{\pi }{4}}8\sqrt{sec^2(t)} dt$

$L=\int _0^{\frac{\pi }{4}}8sec(t) dt$

now, we can solve integral

$\int \:8\sec \left(t\right)dt$

$=8\ln \left|\tan \left(t\right)+\sec \left(t\right)\right|$

now, we can plug bounds

and we get

$=8\ln \left(\sqrt{2}+1\right)-0$

so,

$L=8\ln \left(1+\sqrt{2}\right)$ ..............Answer

5 0

3 years ago

Evaluate 3z when z=9

zepelin [54]

Answer:

Step-by-step explanation:

given value of Z=9

so, 3×9=27

3 0

3 years ago

Meghan has $1.10 I'm dimes nickels and pennies. She has three times as many nickels as pennies, and the number of dimes is two l

Dmitriy789 [7]

N=3p and d=p-2 we are also told that:

p+n+d=110 using n and d from above we get:

p+3p+p-2=110

5p-2=110

5p=112

p=112/5

Which is not an integer...are we sure there is no typo in the question...

There are 3 times as many nickels as pennies

There are pennies-2 dimes

And the total is $1.10

Just checking, because something is off...

7 0

3 years ago