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3 years ago

6

A university lecture hall has 100 seats. During class, 30% of the seats are empty. How many students are attending class?

2 answers:

Alika [10]3 years ago

7 0

Answer:

70 students

Step-by-step explanation:

100=100% so -30 to get 70 students

Shtirlitz [24]3 years ago

3 0

Answer:

70 students are attending class

Step-by-step explanation:

100% - 30% = 70%

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Prove algebraically that the straight line with equation x=2y+5 is a tangent to the circle with equation x^2+y^2=5

zmey [24]

Differentiate both sides of the equation of the circle with respect to $x$ , treating $y=y(x)$ as a function of $x$ :

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balu736 [363]

1. 3*3 + 3*8 = 9+24=33

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2 years ago

Find the coordinates of the midpoint of the segment whose endpoints are h(6,4) and k(2,8)

ozzi

Answer:

$(4,6)$

Step-by-step explanation:

we know that

The formula to calculate the coordinates of the midpoint between two points is equal to

$M(\frac{x1+x2}{2},\frac{y1+y2}{2})$

we have that

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$h(6,4), k(2,8)$

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$M(\frac{6+2}{2},\frac{4+8}{2})$

$M(\frac{8}{2},\frac{12}{2})$

$M(4,6)$

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