3 years ago

Help with my math please

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

4 0

Answer:

Step-by-step explanation:

You just distribute the negative sign.

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A polynomial p has zeros when x = 5, x = -1, and x = -1/4

mafiozo [28]

Answer:

$x=5$ ⇒ $(x-5)=0$

$x=-1$ ⇒ $(x+1)=0$

$x=-1/4$ ⇒ $(x+1/4)=0$ ⇒ $(4x+1)=0$

$p(x)=(x-5)(x+1)(4x+1)=0$

$Option(B)$

Hope it helps...

Have a great day!!

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3 years ago

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Based on this information, which pair of lines, together, could be perpendicular to RS? Select two options.

Neporo4naja [7]

Answer: EA & FG

Step-by-step explanation:

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3 years ago

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Help please :) try to explain and answer math coordinates

Ludmilka [50]

The answer is (c-a , b)

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3 years ago

Find the value of x³+ y³ + z³ – 3xyz if x² + y² + z² = 83 and x + y + z = 15

raketka [301]

identity used is

x³ + y³+ z³– 3xyz = (x + y + z) (x² + y² + z² – xy – yz – zx).

then use

(x+y+z)² = x²+y²+z²+2(xy+yz+xz)

225= 83 + 2(xy+yz+xz)

xy+yz+xz = (225-83)/2

xy+yz+xz= 142/2

xy+yz+xz= 71

now use identity

x³ + y³+ z³– 3xyz = (x + y + z) (x² + y² + z² – xy – yz – zx).

now

x³ + y³+ z³– 3xyz = 15 (83 – xy – yz – zx).

= 15[83 - (71)]

= 15×12

=180

4 0

3 years ago

Angle GHI and angle JHI are supplementary. Angle GHI measures (28x + 40)° and angle JHI measures (7x)°. What is the measure of a

muminat

Two angles are supplementary if their sum is 180 degrees.

Here we are given:

Angle GHI measures (28x + 40)° and angle JHI measures (7x)°.

Sum of angle GHI and JHI is 180.

$angle GHI + angle JHI = 180$

$(28x + 40) + (7x) = 180$

$35x = 140$

dividing both sides by 35,

x=4

Now let us find angle JHI

angle JHI = 7x = 7*4 =28

Answer : Angle JHI is 28 degrees.

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4 years ago

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