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zloy xaker [14]
3 years ago
14

4. (x+ 2)(2x2 + 9x+8)

Mathematics
1 answer:
vfiekz [6]3 years ago
6 0

Answer:

2x3+9x2+8x+4x2+18x+16

2x3+13x2+26x+16

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Kobotan [32]
Answer:

y = x + 4





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2 years ago
PetSmart.com sold the following varieties of dog food in June 2003.
aivan3 [116]

Let x  be the number of bags of Nature's Recipe Venison Meal & Rice Canine 20 percent protein, y be the number of bags of Nutro Max Natural Dog Food 27 percent protein and z be the number of bags of PetSmart Premier Oven Baked Lamb 25 percent protein a dog breeder buys. He  wants to make 300 pounds of a mix. Then

20x+17.5y+30z=300.

Now

  • in 20x pounds of Nature's Recipe Venison Meal & Rice Canine 20 percent protein is 0.2·20x=4x pounds of protein;
  • in 17.5y pounds of Nutro Max Natural Dog Food 27 percent protein is 0.27·17.5y=4.725y pounds of protein;
  • in 30z pounds of PetSmart Premier Oven Baked Lamb 25 percent protein is 0.25·30z=7.5z pounds of protein;
  • in 300 pounds of mix containing 22 percent protein is 0.22·300=66 pounds of protein.

Then 4x+4.725y+7.5z=66.

You get a system

\left\{\begin{array}{l}20x+17.5y+30z=300\\4x+4.725y+7.5z=66.\end{array}\right.

From the first equation z=10-\dfrac{2}{3}x-\dfrac{7}{12}y. Substitute it into the second equation:

4x+4.725y+7.5(10-\dfrac{2}{3}x-\dfrac{7}{12}y)=66.

Simplify it:

-x+\dfrac{7}{20}y=-9,\\ \\ 20x-7y=180.

y must be divided by 20, then

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  • y=40, x=23,  z is not a whole number;
  • y=60, x=30, z=10-20-35<0;
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Answer: 9 bags with 1st mix, 0 bags with 2nd mix and 4 bags with 3rd mix.

5 0
3 years ago
Rewrite the equation 2y+3x=4 in slope-intercept form. then find the slope and y-intercept
Zinaida [17]

Answer:

y=  -3/2-2

Step-by-step explanation:

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3 years ago
Can someone help me with this problem<br><br> 7.984 ÷ 1.99
kiruha [24]

Answer: 4.012

Step-by-step explanation: Hope this helps! :)

3 0
3 years ago
Okay guys I'm not very good at word problems, but here's my question:
allsm [11]

Answer:

54 students

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331 - 7 = 324

324 divided by 6 = 54

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8 0
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