Answer:
That doesn't make any sense
Step-by-step explanation:
Answer:
x=1
Step-by-step explanation:
To get the 7 away, we need to multiply it into the parentheses.
7*-10= -70
7*3=21
-70+21x= -49
Now we combine like terms and we move 70 over. Because we're moving it to the other side of the equation, it becomes positive.
21x= -49+70
-49+70 is the same as 70-49
70-49= 21
Now we put it together.
21x=21
To get the x by itself, we need to divide 21 on both sides.
21x/21= 21/21
21/21=1
x=1
The weight of the circle that is double the weight of the triangle is 20 grams.
<h3>How to find weight ?</h3>
The weight of the rectangle is 80 grams.
The weight of the triangle is double the weight of the weight of the circle.
A rectangle is made up of 2 triangles. Therefore,
weight of each triangle = 80 / 2 = 40 grams
Since, the weight of the triangle is double the weight of the circle, the weight of the circle can be calculated as follows:
weight of circle = 40 / 2
Therefore,
weight of the circle = 20 grams.
learn more on weight here: brainly.com/question/23312072
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Answer:
Suppose that you have 50 people that like hip hop and 50 people that like country.
Now, the union of those sets would be 50 + 50 = 100 people, right?
Well, this may be incorrect, because in the 50 people that like hip hop, we may have, for example, 10, that also like country (this means that in the 50 people that like country, we also have 10 that like hip hop).
Then when we are adding 50 + 50 we are counting those 10 people in both groups, and that is why the direct addition may be different than the union of both sets.
In more technical words, the union of two sets is equal to the addition of the elements of both sets minus the elements in the intersection of both sets (in our prior example, the 10 people that like hip hop and country music are the intersection of both sets)
