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3 years ago

The variable s varies directly as the square of t. When s = 4, t = 12. Nick’s work finding the value of t when s = 48 is shown:

Mathematics

1 answer:

Colt1911 [192]3 years ago

7 0

Answer:

C - He substituted incorrectly when calculating the constant of variation.

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Please anyone I’m desperate

Savatey [412]

Answer:

the answer is B) 12a+6b

Step-by-step explanation:

3+9=12 so 3a+9a=12a,

7-1=6 so 7b-(1)b=6b

3 0

3 years ago

Read 2 more answers

A lamina with constant density rho(x, y) = rho occupies the given region. Find the moments of inertia Ix and Iy and the radii of

jenyasd209 [6]

Answer:

Ix = Iy = $\frac{ρπR^{4} }{16}$

Radius of gyration x = y = $\frac{R}{4}$

Step-by-step explanation:

Given: A lamina with constant density ρ(x, y) = ρ occupies the given region x2 + y2 ≤ a2 in the first quadrant.

Mass of disk = ρπR2

Moment of inertia about its perpendicular axis is $\frac{MR^{2} }{2}$ . Moment of inertia of quarter disk about its perpendicular is $\frac{MR^{2} }{8}$ .

Now using perpendicular axis theorem, Ix = Iy = $\frac{MR^{2} }{16}$ = $\frac{ρπR^{4} }{16}$ .

For Radius of gyration K, equate MK2 = MR2/16, K= R/4.

3 0

4 years ago

Gabrielle surveyed a random sample of 40 students in her school's cafeteria about whether they ate the cafeteria's tomato soup.

den301095 [7]

Part A:
14/40=x/840
14*840=40x
11760=40x
294=x
x=294
194 are expected to eat the tomato soup

Part B:
find the average of 10,11, and 14
35/3=11.67

11.67/40=x/840
40x=11.67*840
9802.8=40x
x=245.07

245.07/840
0.29175*100 = 29.175

29.175%

8 0

3 years ago

Multiply (3y^3+5y^2-4y) (2y^2-6y-7) help me solve this with the steps please

Gala2k [10]

Answer:

as following

Step-by-step explanation:

$(3y^3+5y^2-4y) (2y^2-6y-7) \\=y(3y^2+5y-4)(2y^2-6y-7)\\=y(6y^4-16y^3-21y^2+10y^3-30y^2-35y-8y^2+24y+28)\\=y(6y^4-6y^3-59y^2-11y+28)\\=6y^5-6y^4-59y^3-11y^2+28y$

3 0

2 years ago

Which rule yields the dilation of the figure STUV centered at the origin?

Stels [109]

The length of ST is 10 units, the length of S't" is 2 units.

This means the dilated figure was decreased by a factor of 5.

Because it is smaller it would be a scale factor of 1/5 ( 0.2 as a decimal).

5 0

3 years ago

Read 2 more answers