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3 years ago

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cd)(x)?

Mathematics

1 answer:

ludmilkaskok [199]3 years ago

7 0

Answer: cd(x) = 4x³ — 2x² + 8x — 4

Step-by-step explanation:

c(x) = 4x - 2

d(x) = x² + 2

Therefore, cd(x) = c(x) × d(x)

cd(x) = (4x - 2)(x² + 2)

= (4x × x²) + (4x × 2) + (-2 × x²) + (-2 × 2)

= 4x³ + 8x -2x² - 4

cd(x) = 4x³ — 2x² + 8x — 4

Hope this helps?

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Write the equation of the line with slope 4 through the point (-2, 5)

SSSSS [86.1K]

Answer:

y=4x+13 or y-5=4(x+2)

Step-by-step explanation:

we know that

The equation of the line into point slope form is equal to

y-y1=m(x-x1)

In this problem we have

m=4

(x1,y1)=(-2,5)

substitute

y-5=4(x+2) ----> equation of the line into point slope form

Convert to slope intercept form

y-5=4x+8

y=4x+8+5

y=4x+13 ----> equation of the line into slope intercept form

5 0

3 years ago

A furniture dealer purchased a desk for $150 and then set the selling price equal to the purchase price plus a markup that was 4

zalisa [80]

Answer:

B. $60.00

Step-by-step explanation:

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5 0

4 years ago

Determine the intercepts of the line. y=4x+7

luda_lava [24]

To get your answer we'll plug 0 in for x into the equation.

So, multiply 4*0 which equals 0.

$y=0+7$

Then we'll add 0 and 7 which leaves us with

$y=7$

The y-intercept of this equation is: $(0,7)$

To find the x-intercept of this equation we'll rewrite it as $4x+7=0$

Then we'll subtract 7 from both sides,

$4x=-7$

Now we'll divide each side by 4. Then simplify which brings us to our answer,

$x= -\frac{7}{4}$

The x-intercept of this equation is: $( -\frac{7}{4} ,0)$

I hope I helped you! If you need any more help let me know!

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4 years ago

30 Points

Zina [86]

Answer:

C. a property of algebra

Step-by-step explanation:

I hope this helps

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3 years ago

Y= -8x + 2 solve by substitution?

Elden [556K]

Answer:

i got x equals 1/4

Step-by-step explanation:

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3 years ago