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3 years ago

Which expression is equivalent to m-0.25m a. 0.25 times m b. 0.25 less than m

Mathematics

2 answers:

Margarita [4]3 years ago

4 0

The answer is a 0.25 times m

babymother [125]3 years ago

4 0

The answer for the following question you're asking would have to A. 0.25(m) [0.25 times m]

because 0.25m equals the same thing as 0.25 × m

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Please help with this Math Question...

Nataly [62]

Answer: A

Step-by-step explanation:

f(x) = x³ + 4x² + 7x + 6

possible rational roots are ±{1, 2, 3, 6}

Try x = -2

-2 | 1 4 7 6

| ↓ -2 -4 -6

1 2 3 0 ← remainder is 0 so x = -2 is a root ⇒ (x + 2) = 0

The factored polynomial x² + 2x + 3 = 0 is not factorable so use the quadratic formula to find the roots.

a=1, b=2, c=3

$x=\dfrac{-b\pm\sqrt{b^2-4ac} }{2a}$

$x=\dfrac{-(2)\pm\sqrt{(2)^2-4(1)(3)} }{2(1)}$

$x=\dfrac{-2\pm\sqrt{4-12} }{2}$

$x=\dfrac{-2\pm\sqrt{-8} }{2}$

$x=\dfrac{-2\pm2i\sqrt{2}}{2}$

$x = -1 \pm i\sqrt{2}$

$x = -1 + i\sqrt{2}$ $x = -1 - i\sqrt{2}$

$x - (-1 + i\sqrt{2})=0$ $x - (-1 - i\sqrt{2})=0$

The factors are:

$(x - 2)[x - (-1 + i\sqrt{2})][x - (-1 - i\sqrt{2})]$

5 0

3 years ago

I need help on this homework

abruzzese [7]

Answer:

Tn=a(n-1)d

T50=261(50-1)-5

T50=12784

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3 years ago

Suppose you have the 26 letters of the alphabet on separate cards in a hat. You pick out a card, write down the letter, put the

tekilochka [14]

The probability is 4/26 since MATH has 4 letters. It might be a trick question though because you're putting the card back in the hat, therefore it might be different. Sorry if this is too confusing I overthink it lol

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3 years ago

I need help fast plz- I will give brainliest

kipiarov [429]

Y=5x the m would be 5 it is the slope

6 0

3 years ago

PLEASE HELP 20+ POINTS!! What is the cosine equation of the function shown?

noname [10]

Answer: $\bold{y=7\ \cos\bigg(x-\dfrac{\pi}{4}\bigg)-4}$

Step-by-step explanation:

y = A cos (Bx - C) + D

A (amplitude) = max - D
B = Period/2π ---> Period is the distance from max to next max
C = B · Phase Shift ---> Phase shift is distance from y-axis to max
D (vertical shift) = (max + min)/2

D = (max + min)/2 = (3 - 11)/3 = -4

A = max - D = 3 - (-4) = 7

Period = 9π/4 - π/4 = 8π/4 = 2π

B = Period/2π = 2π/2π = 1

Phase Shift = π/4 - 0 = π/4

C = B · Phase Shift = 1 · π/4 = π/4

Equation:

y = 7 cos (1·x - π/4) + (-4)

8 0

3 years ago