3х2 — 3 — 4 Factor completely

Mathematics

2 answers:

Talja [164]3 years ago

7 0

Answer:

It’s A

Step-by-step explanation:

Kaylis [27]3 years ago

3 0

Answer:

-1

Step-by-step explanation:

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What is the value of a + b? 145 135 110 125

Scilla [17]

A° = 1/2 (90) = 45°

b° = 1/2[360 - (110 + 90)]
b° = 1/2(160)
b° = 80°

a° + b° = 45° + 80° = 135°

Answer
135°

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4 years ago

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What number is 25% of 60?

mr_godi [17]

60x25%
25%=0.25
So, 60x0.25=15
The answer is 15

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4 years ago

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A college admits a freshman class of 330 students at the beginning of each academic year and graduates 145 students twice a year

Andre45 [30]

Answer:

200 students

Step-by-step explanation:

Change in one year:

330 - 2(145) = 330 - 290 = 40

Change after 5 years:

40*5 = 200 students

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3 years ago

Plot the zeros of the polynomial y = x4 + 3x3 − 27x2 + 13x + 42

a_sh-v [17]

Answer:

See explanation

Step-by-step explanation:

Consider the polynomial $y=x^4+3x^3-27x^2+13x+42$ 4th power polynomial function has at most 4 zeros.

Integer zeros can be only among the divisors of 42:

$\pm1, \ \pm 2,\ \pm 3,\ \pm 6,\ \pm 7,\ \pm 14,\ \pm 21,\ \pm 42$

Check them:

$y(1)=1^4+3\cdot 1^3-27\cdot 1^2+13\cdot 1+42=1+3-27+13+42=32\neq 0\\ \\y(-1)=(-1)^4+3\cdot (-1)^3-27\cdot (-1)^2+13\cdot (-1)+42=1-3-27-13+42=0\\ \\y(2)=2^4+3\cdot 2^3-27\cdot 2^2+13\cdot 2+42=16+24-108+26+42=0\\ \\y(3)=3^4+3\cdot 3^3-27\cdot 3^2+13\cdot 3+42=81+81-243+39+42= 0\\ \\y(-7)=(-7)^4+3\cdot (-7)^3-27\cdot (-7)^2+13\cdot (-7)+42=2,401-1,029-1,323-91+42= 0$