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shtirl [24]
3 years ago
7

Subtract these polynomials. (3x2 + 2x+4) - (x2+2x+ 1) = What’s the answer

Mathematics
2 answers:
katen-ka-za [31]3 years ago
6 0

Answer:

3x+5-x2

Step-by-step explanation:

(3x2+2x+4)-(x2+2x+1)

3x+2+2x+4-x2-2x-1

3x+2x-2x+2+4-1-x2

3x+5-x2

zimovet [89]3 years ago
4 0
Collect like terms once done expanding... the answer is 2x^2 + 3

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Colt1911 [192]

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What type of angles are ∠4 and∠6? Question 2 options: adjacent angles alternate exterior angles alternate interior angles corres
lianna [129]

Angles 4 and 6 are called Alternate Exterior Angles

Step-by-step explanation:

Alternate Exterior Angles are a pair of angles on the outer side of the each of two lines but on opposite sides of the transversal.

When we take two parallel lines they will create 8 angles, such as 1,2,3,4,5,6,7 & 8.

In that angle 6 is 65 degrees.

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3 years ago
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kap26 [50]

Step-by-step explanation:

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7 0
2 years ago
Let the following sample of 8 observations be drawn from a normal population with unknown mean and standard deviation: 22, 18, 1
BigorU [14]

Answer:

a:  Sample mean: 20, Sample standard deviation: 1.732

b:  19.13 <µ < 20.87

c:  18.84< µ < 21.16

d:  as the confidence level increases, the interval becomes wider

Step-by-step explanation:

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Sample standard deviation is the square root of the variance

See the first attached photo for the calculations of these values.

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Look for the column on the t-distribution chart that has "area in two tails" of 0.20 (80%), and row 7 (degree of freedom)

The t-value is 1.415

See the second attached photo for the construction of the confidence interval

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Look for the column on the t-distribution chart that has "area in two tails" of 0.10 (90%), and row 7 (degree of freedom)

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See the third attached photo for the construction of the confidence interval

3 0
3 years ago
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