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alukav5142 [94]
3 years ago
15

How much less than 3x^2−7x+9 is 2x^2+4x−8 ? Thanks!!

Mathematics
1 answer:
maks197457 [2]3 years ago
8 0
Simplify.
3x^2−7x+9 - 2x^2+4x−8

1. 3x^2-2x^2 = x
2. -7x + 4x = -3x
3. 9 - 8 = 1

Combine.
x -3x +1

Thus, 2x^2+4x−8 is x -3x +1 less than 3x^2−7x+9
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Some students were asked what kinds of animals they have at home.
Nataly_w [17]

(a) Animals by popularity; Dogs, Cats, Others, Horses.

(b) If 250 students were interviewed, 20 students have other pets.

(c) No, it was incorrect.

Step-by-step explanation:

Step 1; We arrange the different pets in chronological order, from the highest percent to the lowest percent;

1. Dogs - 67%,

2. Cats - 20%

3. Others - 8%,

4. Horses - 1%.

None is not included in this list.

Step 2; If 250 students were interviewed, 8% of those have other pets. So we need to calculate how much 8% of 250 is.

8% of 250 = \frac{8}{100} × 250 = 0.08 × 250 = 20.

So 20 students had other pets.

Step 3; 20% of the interviewed students had cats. If 75 students had cats, we need to equate 20% to the 75 and find out how many students were actually interviewed.

20% × x = 75, 0.2 × x = 75,

x = \frac{75}{0.2} = 375.

So if 375 students were interviewed, 75 students would have cats. So the estimate of 250 students being interviewed is incorrect.

8 0
3 years ago
Please help! Thanks!
alisha [4.7K]

Answer:

2,9

Step-by-step explanation:

6 0
3 years ago
Please write a 5 sentence summary of fidel castro's life
adell [148]

Answer:

Fidel Castro, in full Fidel Alejandro Castro Ruz, (born August 13, 1926, near Birán, Cuba—died November 25, 2016, Cuba), political leader of Cuba (1959–2008) who transformed his country into the first communist state in the Western Hemisphere. Castro became a symbol of communist revolution in Latin America. He held the title of premier until 1976 and then began a long tenure as president of the Council of State and the Council of Ministers. He handed over provisional power in July 2006 because of health problems and formally relinquished the presidency in February 2008.

Step-by-step explanation: Hope it helps! Please rate brainliest

4 0
3 years ago
Read 2 more answers
On a certain game show, contestants pick 5 number balls from a bag containing 20 numbered balls (0-19). After each draw, the bal
Gnoma [55]

Answer:

5/20 or 25% probability of winning $1,000,000

Step-by-step explanation:

How many numbered balls do they need to win?

5

How many balls are there?

20

Therefor your answer is (balls need to win/number of balls).

4 0
2 years ago
Write an equation in point slope form? I think it’s b
julia-pushkina [17]

The point-slope form:

y-y_1=m(x-x_1)

9.

We have:

(8,\ 3)\to x_1=8,\ y_1=3\\m=5

Substitute:

\boxed{y-3=5(x-8)}

10.

We have:

(-3,\ -5)\to x_1=-3,\ y_1=-5\\m=-\dfrac{2}{5}

Substitute:

y-(-5)=-\dfrac{2}{5}(x-(-3))\\\\\boxed{y+5=-\dfrac{2}{5}(x+3)}

5 0
3 years ago
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