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3 years ago

If f(x) = -3x^4 - 2x^3 + 3x^2 and g(x) = 3x^4 - 4x^3 + x^2 then f(x) + g(x) =

Mathematics

1 answer:

Alekssandra [29.7K]3 years ago

7 0

Answer:

c. -3×^4-6×^3+4×^3

Step-by-step explanation:

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The average grain of salt is 0.0003 meters wide. Rhinovirus, which causes the common cold, is 0.00000003 meters wide. How many t

algol [13]

Answer:

$1\times 10^4\ times$

Step-by-step explanation:

Given:

Width of average grain of salt is, $w=0.0003\ m$

Width of Rhinovirus is, $W=0.00000003\ m$

Now, expressing each width in scientific notation form, we get:

$w=0.0003\ m = 3\times 10^{-4}\ m\\\\W=0.00000003\ m = 3\times 10^{-8}\ m$

Now, in order to get how many times 'W' is wider than 'w', we divide the two widths. This gives,

$\frac{W}{w}=\frac{3\times 10^{-4}\ m}{3\times 10^{-8}\ m}\\\\\frac{W}{w}=1\times 10^{-4-(-8)}=1\times 10^{-4+8}=1\times 10^4\\\\\therefore W=1\times 10^4\times w$

Therefore, the grain of salt is $1\times 10^4\ times$ wider than Rhinovirus.

5 0

3 years ago

Find the surface area of the cylinder. Type an exact answer in terms of pi.

weqwewe [10]

Answer:

154π cm²

Step-by-step explanation:

Radius (r) = 7 cm

Height (h) = 4 cm

Surface area of cylinder

= 2πr (h + r)

= 2π (7) (4 + 7)

= 2π (7) (11)

= 2π (77)

= 154π cm²

______

Hope it helps ⚜

8 0

2 years ago

Read 2 more answers

What is the volume of a cylinder with a height of 4xy^4 and a radius of 2x? (The formula fo

OLga [1]

Answer:

volume: $\sf 16\pi x^3y^4$

given:

height: $\sf 4xy^4$

radius: $\sf 2x$

<u>cylinder volume</u>:

$\hookrightarrow \sf \pi r^2h$

$\hookrightarrow \sf \pi (2x)^2(4xy^4)$

$\hookrightarrow \sf \pi (4x^2)(4xy^4)$

$\hookrightarrow \sf 16\pi x^3y^4$

3 0

2 years ago

Mr Tay had 265 m of wire.

Ahat [919]

Answer:6

Step-by-step explanation:

265-25

240/4

8 0

3 years ago

Read 2 more answers

Suppose M is the midpoint

AysviL [449]

x = 9

Since M is the midpoint of XY:

XM = MY

XM = 2x + 11

MY = 5x - 16

2x + 11 = 5x - 16

5x - 2x = 11 + 16

3x = 27

x = 27/3

x = 8

Learn more here: brainly.com/question/18315903

6 0

3 years ago