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3 years ago

What is the geometric sequence of -13,117,-1053

Mathematics

1 answer:

andre [41]3 years ago

4 0

Answer:

-19

Step-by-step explanation:

Use the geometric ratio r=a2/a1

So 117/-13 = -9

-13*-9= 117

117*-9= -1053

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Behaviors that living things inherit are called

Mashcka [7]

Genes, "characteristic of the offspring" (google web)

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3 years ago

In DCAB, If DB=38, What is DC? 38 45 52 112

dedylja [7]

Answer:

C. 52°

Step-by-step explanation:

In ∆CAB, m<A = right angle = 90°

m<B = 38°

m<C + m<A + m<B = 180° (sum of ∆)

m<C + 90° + 38° = 180° (substitution)

m<C + 128 = 180

m<C = 180 - 128 (subtraction property of equality)

m<C = 52°

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3 years ago

in mr carrs math class, 9 of the 14 said they like math , and 7 of the 16 boys said they like math . if miss carr randomly a sel

erma4kov [3.2K]

For the 1st fraction, since 14 × 1 = 14,

9 × 1

14 × 1

Likewise, for the 2nd fraction, since 7 × 2 = 14,

6 × 2

7 × 2

Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction

3 0

3 years ago

Find the volume of the following solid. Using cylindrical coordinates

Reika [66]

In cylindrical coordinates, the equations of the surfaces become

$z = 4 - 4r^2 \\\\ z = (r^2)^2 - 1 = r^4 - 1$

These surfaces intersect on the cylinder of radius 1 with cross sections parallel to the x,y-plane:

$4 - 4r^2 = r^4 - 1 \\\\ \implies r^4 + 4r^2 - 5 = (r-1)(r+1)(r^2+5) = 0 \\\\ \implies r=1$

Then in cylindrical coordinates, the volume of the space bounded by these surfaces is

$\displaystyle \int_0^{2\pi}\int_0^1\int_{r^4-1}^{4-4r^2}r\,\mathrm dz\,\mathrm dr\,\mathrm d\theta = 2\pi \int_0^1 \int_{r^4 - 1}^{4-4r^2}r\,\mathrm dz\,\mathrm dr \\\\ = \pi \int_0^1 (4-4r^2)^2 - (r^4-1)^2 \,\mathrm dr \\\\ = \pi \int_0^1 (15-32r^2+18r^4-r^8)\,\mathrm dr = \boxed{\frac{352\pi}{45}}$

7 0

3 years ago

COMPLETE ANSWER

abruzzese [7]

Hope you could understand.

If you have any query feel free to ask.

3 0

3 years ago