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3 years ago

А _______ equation can be written in the form ax2 + bx+c=0 where a, b, and c are real numbers, and a is a nonzero number.

Mathematics

2 answers:

TEA [102]3 years ago

3 0

Answer:

A) quadratic

Step-by-step explanation:

ax2 + bx+c=0

Since the highest power of the equation is 2

A) quadratic -2

B) quartic- 4

C) linear- 1

D) cubic-3

Wewaii [24]3 years ago

3 0

A) quadratic because the highest power of the equation is 2

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There are 416 students who are enrolled in an introductory geology course. if there are seven boys to every six girls, how many

Alenkinab [10]

$\text{Let the number of boys be x and number of girls be y.}\\
\\
\text{and there are total 416 students enrolled in the course. so we have}\\
\\
x+y=416 \ \ \ \ \ \ \ \ \ \ ......(i)\\
\\
\text{also given that there are seven boys to every six girls, that is}\\
\\
\frac{x}{y}=\frac{7}{6}$

$\Rightarrow 6x=7y\\
\\
\Rightarrow y=\frac{6x}{7}\\
\\
\text{substitute this value of y in (i), we get}\\
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x+\frac{6x}{7}=416\\
\\
\Rightarrow \frac{7x+6x}{7}=416\\
\\
\Rightarrow \frac{13x}{7}=416\\
\\
\Rightarrow x=\frac{416\times 7}{13}\\
\\
\Rightarrow x=224$

Hence the number of boys in the course are: 224

4 0

3 years ago

A brother and sister attend the same school, and they walk from home to school using the same route. It takes the brother 24 min

madam [21]

Answer:

Step-by-step explanation:

24 - 3 = 21 minutes

21 > 18

5 0

3 years ago

9 x 3/9 is greater than less than or equal to 9?

Elena-2011 [213]

Answer:

9 x 3/9 is less than 9

Step-by-step explanation:

8 0

2 years ago

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2(2x + 7) = 2 + 2x<br>A. One Solution <br>B. No Solution <br>C. Infinite Solutions

Rudik [331]

B. I am so sorry if it is not right

5 0

3 years ago

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The average age of 6 men is 35 years and

PSYCHO15rus [73]

Answer:

39.50

42.50

Step-by-step explanation:

Age of the 2 men = sum of the ages of the 6 men - sum of the ages of the 4 men

Average = sum of ages / total number of men

35 = sum of ages / 6

sum of ages = 35 x6 = 210

32 = sum of ages / 4

32 x 4 = sum of ages

128

210 - 128 = 82

age of the younger man = x

age of the older man = 3 + x

x + 3 + x = 82

2x + 3 = 82

2x = 82 - 3

2x = 79

x = 79/2 = 39.5

older man = 39.5 + 3 = 42.50

7 0

3 years ago