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Tems11 [23]
3 years ago
10

B) Determine the quadratic function whose zeros are -2 and 5/2​

Mathematics
1 answer:
vovangra [49]3 years ago
3 0
So the factors of the quadratic function must be (x+2) and (2x-5) foiling them gives us 2x^2-x-10
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3. A rectangle has a perimeter of 42 feet. Its length, L, is three feet more than twice its width, W.
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4 0
3 years ago
Arlene makes a necklace using 14 purple beads for every 6 silver beads. The necklace contains 18 beads. How many of each color b
Margaret [11]

Answer:

5.4 numbers of purple beads and 12.6 numbers of silver beads.

Step-by-step explanation:

Arlene makes a necklace using 14 purple beads for every 6 silver beads. So, she uses purple and silver beads in the ratio 14 : 6 = 7 : 3.

Now, the necklace contains 18 beads, then in the ratio 7 : 3, there will be (18 \times \frac{3}{3 + 7}) = 5.4 numbers of purple beads and (18 - 5.4) = 12.6 numbers of silver beads. (Answer)

8 0
3 years ago
The weight of male american between the ages 18 to 25 is normally distributed, with mean of 162.7 lb and a standard deviation of
MArishka [77]

Answer:

218.7 lb.

Step-by-step explanation:

We have been given that the  weight of male american between the ages 18 to 25 is normally distributed, with mean of 162.7 lb and a standard deviation of 28 lb.

One definition of obesity states that a person is obese if the z-score of his or her weight is greater than 2.

We will use z-score formula to solve our given problem.

z=\frac{x-\mu}{\sigma}, where,

z=\text{ z-score},

x=\text{ Random sample-score},

\mu=\text{ Mean},

\sigma=\text{ Standard deviation}.

Upon substituting our given values in z-score formula we will get,

2=\frac{x-162.7}{28}

Now let us solve for x.

Upon multiplying both sides of our equation by 28 we will get,

2*28=\frac{x-162.7}{28}*28

56=x-162.7

Let us add 162.7 to both sides of our equation.

56+162.7=x-162.7+162.7

218.7=x

Therefore, the obesity threshold weight for a young adult American male is 218.7 pounds.

6 0
3 years ago
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Where is the photo???
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3 years ago
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The sum of 555 consecutive integers is 120120120.
GalinKa [24]

Answer:

24024022 + 24024023 + 24024024 + 24024025 + 24024026 equals 120120120

Step-by-step explanation:

3 0
3 years ago
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