4 years ago

If something was 7 weeks old 5 days ago, when was it born?

Mathematics

1 answer:

erica [24]4 years ago

3 0

Answer:

I think its 245 but i'm not sure

Step-by-step explanation:

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NEED HELP ASAP !!! Simplify: √16r O 47² O 473 87² O 8-3

Vlad1618 [11]

Answer:

4 r^3

Step-by-step explanation:

sqrt ( 16 r^6 ) = sqrt ( 4^2 * (r^3)^2 ) = 4 r^3

6 0

2 years ago

What is the fraction of 3\4 of 28

pentagon [3]

If you are trying to find 3/4 of 28, multiply 3/4 (or 0.75( by 28), which equals 21.

3/4 • 28 = 21

3 0

4 years ago

Directions write s if the set is similar fraction and d if the set is dissimilar fraction

Alisiya [41]

Answer:

Similar (Like) fractions are fractions with same denominators. On the other hand, dissimilar (Unlike) fractions are fractions with different denominators.

Step-by-step explanation:

hope it helps you

4 0

3 years ago

A. Determine the value of each function

Ivenika [448]

Answer:

a= -5

b=5

c=6

substitue each value as x

6 0

3 years ago

Find the work done by the force field F(x,y,z)=6xi+6yj+6k on a particle that moves along the helix r(t)=3 cos(t)i+3sin(t)j+2 tk,

kramer

Answer:

the work done by the force field = 24 π

Step-by-step explanation:

From the information given:

r(t) = 3 cos (t)i + 3 sin (t) j + 2 tk

= xi + yj + zk

∴

x = 3 cos (t)

y = 3 sin (t)

z = 2t

dr = (-3 sin (t)i + 3 cos (t) j + 2 k ) dt

Also F(x,y,z) = 6xi + 6yj + 6k

∴ F(t) = 18 cos (t) i + 18 sin (t) j +6 k

Workdone = 0 to 2π ∫ F(t) dr

$\mathbf{= \int \limits ^{2 \pi} _{0} (18 cos (t) i + 18 sin (t) j +6k)(-3 sin (t)i+3cos (t) j +2k)\ dt}$

$\mathbf{= \int \limits ^{2 \pi} _{0} (-54 \ cos (t).sin(t) + 54 \ sin (t).cos (t) + 12 ) \ dt}$

$\mathbf{= \int \limits ^{2 \pi} _{0} 12 \ dt}$

$\mathbf{= 12 \times 2 \pi}$

= 24 π

3 0

4 years ago