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2 years ago

PLZ HELP ANYONE NOW THIS ILL GIVE 50 POINTS

Mathematics

1 answer:

Ahat [919]2 years ago

8 0

Answer:

Step-by-step explanation:

Plug in x = -4 and find the value:

f(-4) = 3*(-4)² - 7(-4) - 32
f(-4) = 48 + 28 - 32
f(-4) = 44

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Expression in simplest form

SashulF [63]

Answer:

$-x^{3} -9x^{2}$

Step-by-step explanation:

I think.

Pls give Brainliest.

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2 years ago

How many years is tween 1844 to2015

STatiana [176]

To find the number of years between 1844 to 2015 you have to subtract.

Lets say that x is the # of years in between 1844 and 2015

Then we have:
$\sf{2015 - 1844 =x}$

After doing the subtraction using a calculator or a pencil and paper, you get that:

$\huge{\boxed{\bf{x=171}}}$

So 171 years have passed from 1844 to reach to 2015.

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4 years ago

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Find the distance between (-8, 4) and (-8, -2). 10 units 2 units 6 units 8 units

svp [43]

Answer:

Step-by-step explanation:

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4 years ago

A wheel has a radius of 33 cm and completes 12 revolutions in 1 minute. a) determine the angular velocity of the wheel in radian

ZanzabumX [31]

Answer:

a) The angular velocity is 0.4π radians/second ⇒1.25664 radians/second

b) The wheel travels 124.4071 meters in 5 minutes ⇒ 39.6π meters

Step-by-step explanation:

The angular velocity ω = 2 π n ÷ t, where

n is the number of revolution

t is the time in second

The distance that moving by the angular velocity is d = ω r t, where

r is the radius of the circle in meter

∵ A wheel completes 12 revolutions in 1 minute

∴ n = 12

∴ t = 1 minute

→ Change the minute to seconds

∵ 1 minute = 60 seconds

∴ t = 60 seconds

→ Substitute n and t in the rule above

∵ ω = 2 (π) (12) ÷ 60

∴ ω = 24π ÷ 60

∴ ω = 0.4π radians/second

∴ The angular velocity is 0.4π radians/second ⇒1.25664 radians/second

→ To find the distance in 5 minutes multiply ω by the radius by the time

∵ The wheel has a radius of 33 cm

∴ r = 33 cm

→ Change it to meter

∵ 1 m = 100 cm

∴ r = 33 ÷ 100 = 0.33 m

∵ t = 5 minutes

→ Change it to seconds

∴ t = 5 × 60 = 300 seconds

→ Substitute them in the rule of the distance above

∵ d = 0.4π (0.33) (300)

∴ d = 39.6π meters ⇒ 124.407 meters

∴ The wheel travels 124.4071 meters in 5 minutes ⇒ 39.6π meters

6 0

3 years ago

Susan wrote the following statements:

cestrela7 [59]

A theorem is considered to be a statement that is demonstrated to be correct by approved mathematical arguments and operations. Postulates or axioms as it is sometimes called, is considered to be true even without proof. Given these information, statement 1 is a theorem and statement 2 is a postulate.

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4 years ago

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