The yearbook club had a meeting. The meeting had

1 answer:

5 0

If 30 people is three fifths of the club, then you can divide 30 by 3 to find out how many people make up one fifth of the club. So, 10 people make up one fifth of the club.

30 + 20 (which is two more fifths of the club) = 50 people (the entire club)

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A 15-foot ladder leans against a house. The bottom of the ladder is 7 feet from the house. To the nearest degree, what angle doe

max2010maxim [7]

The ladder is forming a right triangle with the house. In this right triangle the hypotenuse is the measure of the ladder, and the distance between the house and he ladder is one of the sides of the triangle. To find the angle, $\alpha$ , that the ladder is making with the ground, we are going to use a trig function that relates the adjacent side of our angle with the hypotenuse. That trig function is Cosine.
$Cos \alpha = \frac{adjacent.side}{hypotenuse}$
$Cos \alpha = \frac{7}{15}$
$\alpha =arcCos( \frac{7}{15} )$
$\alpha =62.2$

We can conclude that the ladder make with the ground a 62° angle.

7 0

2 years ago

PLZ HURRY IT'S URGENT!!!<br> Find the volume of the prism.

Mashutka [201]

Answer:

V = 210 cm³

Step-by-step explanation:

The volume (V) of a cube is calculated as

V = Ah ( A is the area of the base and h is the height )

Here A = 5 × 6 = 30 cm² and h = 7 cm , then

V = 30 × 7 = 210 cm³

7 0

2 years ago

Debbie has equal numbers of dimes and quarters with a total value of $1.40. How many coins does she have altogether?

-BARSIC- [3]

$x=amount\ of\ each\ coin. \\ .25x+.1x=1.4 \\ .35x=1.4 \\ x= \frac{1.4}{.35} \\ x=4\ of\ each\ coin. \\ 4\ quarters\ and\ 4\ dimes. \\ \boxed{8\ coins\ in\ total}$