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Molodets [167]
3 years ago
14

Consider the function f(x) = 3x2 + 7x + 2.

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
5 0
The discriminant:
D = b² - 4 a c = 7² - 4· 3 · 2 = 49 - 24 = 25 
D > 0 This function has 2 x-intercepts ( 2 zeroes ).
x 1 = (-7+5)/6 =-1/3
x 2 = (-7-5) / 6 = - 2 
STatiana [176]3 years ago
4 0

Answer:

25,2 & two real number solutions

Step-by-step explanation:

Edge 2020

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Philip rode his bicycle 9 2/5 miles per hour. if he rode for 3/4 of and hour, how many miles did he cover
adelina 88 [10]

Answer:

Distance he covers in \frac{3}{4} of an hour = 7\frac{1}{20} miles.

Step-by-step explanation:

Phillip rode his bicycle at 9\frac{2}{5} miles per hour.

To find distance he covers in \frac{3}{4} of an hour.

Solution:

Speed at which Phillip rides = 9\frac{2}{5} miles per hour

Time for which he cycles = \frac{3}{4} of an hour

Distance covered in miles =Speed\times Time = 9\frac{2}{5} \times \frac{3}{4}

To multiply mixed numbers we need to convert them to fractions.

[A\frac{b}{c}=\frac{Ac+b}{c}]

9\frac{2}{5} \times \frac{3}{4}

⇒ \frac{(9\times 5)+2}{5} \times \frac{3}{4}

⇒ \frac{47}{5} \times \frac{3}{4}

Then we simply multiply the numerators and denominators.

⇒\frac{141}{20}

Then we convert back to mixed fraction by dividing numerator by denominator and writing the quotient as whole number with fraction (remainder as numerator and denominator being the divisor)

⇒ 7\frac{1}{20} miles.

∴ Distance he covers in \frac{3}{4} of an hour = 7\frac{1}{20} miles.

3 0
4 years ago
Two years ago at Mercedes-Benz Stadium in Atlanta, 71,000 people watched the Rams and the patriots play the super bowl. Out of t
vaieri [72.5K]

Answer:

Part A:24140 PartB: 16865

Step-by-step explanation:

multiply the total number of people by the decimal form of the percentage (move decimal left two places)

71000*.34=24140

71000*.425=30175

then to find the other number you must add the two before then subtract from the total

24140+30175=54135

71000-54135=16865

8 0
3 years ago
Read 2 more answers
PLEASE HELP
den301095 [7]

Answer:

Option A

Step-by-step explanation:

multiple each coordinate by 1/2

8 0
3 years ago
Which of the following three sets of lengths could be used to form a right triangle A 39,15 and 36
laila [671]

Step-by-step explanation:

To find a set of 3 leg lengths that will form a right-angled triangle, the square of the largest leg must be equal to the sum of the squares of the other 2 legs.

We try out all the options:

39² = 1521, 15² + 36² = 1521.

12² = 144, 8² + 4² = 80.

17² = 289, 13² + 9² = 250.

Since 39² equals 15² + 36², option A is the correct answer.

7 0
3 years ago
Read 2 more answers
Calculate the perimeter of this shape 12cm 18cm
EastWind [94]

Answer:

30

Step-by-step explanation:

perimeter = side 1+side 2

12+18=30

4 0
3 years ago
Read 2 more answers
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