The triangle in the drawing is semi equilateral. Therefore a=√(14^2-7^2)=12.12 cm
The base of a regular pyramid consists of 6 equilateral triangles. The area of each triangle is: (14*12.12)/2 = 84.87 cm^2
The base: 6*84.87=509.22 cm^2
Answer:
A: 9 is subtracted from the product of 5 and a number.
Step-by-step explanation:
We know this because when a varible is place directly next to a number then the number is being multiplied by an unknow number. So in this equation five is being multiplied by an unknown number and nine is being subtracted from that.
Missing part of your problem there. If v=5, 3v=15. Assuming you're adding the 9, the answer is 24.
Answer:
n=15
Step-by-step explanation:
20n=300
divide by 20 on both sides
20n/20=n
300/20=15
n=15
By subtracting the water poured into the first two beakers from the available water we conclude that the water left for the third beaker is 0.9 liters.
<h3>How to find the water left for the third beaker</h3>
In this question we know that Karen has 3 liters of water and poured 0.7 liters into the <em>first</em> beaker, 1.4 liters into the <em>second</em> beaker and we can determine the water left for the <em>third</em> beaker by subtracted the water poured into the <em>first two</em> beakers from the available water. The available volume is:
V = 3 L - 0.7 L - 1.4 L
V = 0.9 L
By subtracting the water poured into the first two beakers from the available water we conclude that the water left for the third beaker is 0.9 liters.
To learn more on subtractions: brainly.com/question/4319655
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