Sarah weighs 30 more than 2 times as sheila. Their total weighs is 150 kilograms. What is the weigh of each in grams?
1 answer:
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Answer:
Step-by-step explanation:
Apply cross product property
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Distribute 5 through the parentheses
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Distribute 6 through the parentheses
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Move 6x to left hand side and change it's sign
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Collect like terms
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Move 30 to right hand side and change it's sign
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Calculate
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Divide both sides of the equation by 9
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Calculate
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Hmm they're both even numbers so maybe we can start by cutting each number in half.
18 and 48 had 2 as a common factor.
So factoring a 2 out of each number was the same as cutting each number in half. Try to do something similar with the 9 and 24. They each have something in common.
18 and 48 had 2 as a common factor.
So factoring a 2 out of each number was the same as cutting each number in half. Try to do something similar with the 9 and 24. They each have something in common.
The answer is the option A, which is: A. Equilateral triangles.
The explanation for this answer is shown below:
By definition, a tetrahedron is a solid in three dimensions that has: six sides, four vertices and four triangular faces. These faces are equilateral triangles, which means that all the sides are equal and all the interior angles measure degrees.
The tetrahedron is also called "triangular pyramid".