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arsen [322]
3 years ago
7

what are the roots of the polynomial equation x3-7x=6x-12? Use a graphing calculator and a system of equations.

Mathematics
2 answers:
kvasek [131]3 years ago
5 0

Answer:

B

Step-by-step explanation:

Masteriza [31]3 years ago
3 0
X3-7x=6x-12
x3-7x-6x+12=0
x3-13x+12=0
(x-1)(x2+x-12)=0
Calculate delta of the second bracket:
delta = 1+4*12=49
sqrt(delta)=sqrt(49)=7
x_1=(-1-7)/2=-4
x_2=(-1+7)/2=3

(x-1)(x+4)(x-3)=0

Answear:
Roots: x=1, x=-4, x=3.
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−8 = 3+t again sorry if im hurting yo brain
Oduvanchick [21]

Answer:

-11

Step-by-step explanation:

-8 = 3 + t

-8 - 3 = t

-11 = t

Hope this helps :)

6 0
2 years ago
Explain how the distributive property helps us multiply the following polynomials and why and how the final products differ: (a
koban [17]

Answer:

(a+b)^2 = a^2 + 2ab + b^2

(a-b)^2 = a^2 - 2ab + b^2

(a-b)(a+b) = a^2 - b^2

Step-by-step explanation:

5 0
2 years ago
Harold bought 3 pounds od red applesand 4.2 pounds of green apples from Blue Star Company,where both kinds of apples were $1.75
alexandr1967 [171]
3(1.45)+4.2(1.75)= 5.25+7.35= 12.6 therefore Harold spent $12.60 on apples.
8 0
3 years ago
Express 1/3 as a repeating decimal and round to the nearest hundredth.
katrin [286]

Answer:

1/3 is .333... so you can write .33.... or .33 with a line on top of the 3's

Step-by-step explanation:

.3 is in the tenths and .33 is in the hundredths place

3 0
2 years ago
Find the balance at the end of 4 years if $10,000 is deposited at a rate of 1.5% simple interest.
Minchanka [31]

Answer:

Principal amount (P) = $10,000

Rate (R) = 1.5%

Time (T) = 4 years

Simple interest, I = P X R X T / 100

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= 60000 / 100

= $600

Therefore, Balance = P + I

= 10000 + 600

= $10600

3 0
3 years ago
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