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3 years ago

Write the product in descending powers of x. (x2 + 3x + 1)(x2 + x + 2)

1 answer:

8 0

Multiply each term in one bracket by each in the other:

(I assume x2 means x^2 / x squared) 

(x^2 + 3x + 1)(x^2 + x + 2) 

= x^4 + x^3 + 2x^2 + 3x^3 + 3x^2 + 6x + x^2 + x +2 

Now collect all terms: 

= x^4 + 4x^3 + 6x^2 + 7x + 2

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Y varies directly as x. Y=42 when x=6. Find the value of y when x =15.

pentagon [3]

Answer:

y=120

Step-by-step explanation:

Y varies directly as x is written as

$y \alpha x$

introducing a constant

y=kx

from the question, when y=48, x=6

substitute it in the formula

48=6k

making k the subject by dividing through by 6

$\frac{48}{6} = \frac{6k}{6}$

k=48/6

k=8

put the value of k in the expression y=kx

y=8x

from the question,the value of y when x=15 is given by

y=8×15

y=120.

4 0

3 years ago

Determine the value c so that each of the following

Levart [38]

This can help you

a) since it is discrete we need to think about the sum thing it it was continuous we would look at an integral thing so I think if I remember correctly we need to find c such that ∑i=03c(x2+4)=1
b) problem b is a similar setup

4 0

4 years ago

Which has a measure that is equal to the sum of the measures of the interior angles of a triangle?

Gwar [14]

The answer is a straight line

8 0

3 years ago

Read 2 more answers

Whats the answer PLS

Alexxx [7]

Answer:

48+23(6)½

Step-by-step explanation:

A = l × w

A =[(8-(6)^½) × (9+4(6)^½)]

A =8(9+4(6)^½) + [-(6)^½(9+4(6)^½]

A =(72 + 32(6)^½ - 9(6)^½ - 24)

A =(72 - 24 + 32(6)^½ - 9(6)^½)

A =(48 + 23(6)^½)

3 0

3 years ago

I've been struggling a bit with Composite Figures. This is 2 ones I've really struggled with though so, could I have some help?

Natali5045456 [20]

You are right with : Which shapes could a pentagon be decomposed into to find its area? Chose all that apply.
C. five triangles
D. one triangle and one trapezoid
And #2: Is (A) and (C)

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4 years ago