Thyqueenmary Thyqueenmary

22-04-2016
Mathematics

contestada

If in a rock collection 60% of the rocks are Quartz how many rocks are Quartz if there are 35 rocks?

Respuesta :

vanskikranski vanskikranski

22-04-2016

If 60% of the rocks are Quartz, you need to multiply the total number of rocks by 60% (this is the same as multiplying by 0.6 as 0.6=60%)
So 35 x 0.6 = 21
Therefore there are 21 quartz rocks in the collection.

Answer Link

Otras preguntas

Primary succession can occur in which habitat? a cornfield a cooled lava field an old-growth forest a new beaver pond

someone help me figure this out

Dj giovanni is making a playlist for a friend; he is trying to decide what 12 songs to play and in what order they should be played. if he has his choices narro

What an object is placed 8 mm from a concave spherical mirror a clear image can be projected on the screen 16 mm in front of me to add you to the height of 4 mm

According to OSHA guidelines, what sis the employers responsibility

a sector is a portion of the circles area true or false

I’m confused on this one

In your notebook, set up the following subtraction in a vertical format and select the correct answer. Reduce 7y + 2y 2 - 7 by 3 - 4y.

The statement “All right angles measure 90 degrees” has a counterexample. True False

The statement “Angles that measure more than 90 degrees are obtuse angles” has a counterexample. True False