A box contains 8 videotapes and 5 DVDs. I’m how many ways can one videotape and one DVD be selected?
2 answers:
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Check the picture below.
we know that the arcST is 30°, meaning the inscribed angle intercepting it will be half that or 15°.
in the triangle RWT, two sides of it are RT and RW, both of which are radius segments and thus equal, meaning that triangle RWT is an isosceles, and in an isosceles the twin sides also make twin angles, meaning that ∡RTW is a twin of the inscribed angle ∡RWT.
Answer:
28 students
Step-by-step explanation:
Let x be the number of girls in the class. There were two more boys than girls in her class, then the number of boys is x + 2.
Mrs. Awesome gave each boy as many jelly beans as there were boys in the class, so each of x + 2 boys got x + 2 jelly beans, so
Number of boys = x + 2
Number of jelly beans each boy got = x + 2
Total number of jelly beans all boys got = (x + 2)(x + 2)
Mrs. Awesome gave each girl as many jelly beans as there were girls in the class, so each of x girls got x jelly beans, so
Number of girls = x
Number of jelly beans each girl got = x
Total number of jelly beans all girls got = (x)(x)
Hence,
Total number of jelly beans class got = (x + 2)(x + 2) + (x)(x)
Mrs. Awesome brought 400 jelly beans, and when she finished, she had six jelly beans left, so she gave 400 - 6 = 394 jelly beans to the calss.
So,
Number of girls cannot be negative, so x = 13, x + 2 = 15 and total number of students is 13 + 15 = 28
Answer:
see explanation
Step-by-step explanation:
A quadratic function in standard form is
y = ax² + bx + c (a ≠ 0 )
Given
y = - 3x² + 6x + 17 ← compare coefficients with standard form, then
a = - 3, b = 6, c = 17
Given the quadratic in standard form the the equation of the axis of symmetry is
x = - = -
= 1
Equation of axis of symmetry is x = 1