Does anyone know this??
1 answer:
Answer: 21
Step-by-step explanation: To solve this problem, we can first set up a proportion because we know that 3 is to 7 as 9 is to x.
So we have .
Now, we can use cross products to find the missing value.
So we have 3 time x which is 3x and 7 times 9 which is 63.
Rewriting our equation, we have 3x = 63.
Dividing both sides by 3, we find that <em>x = 21</em>.
So, <em>x = 21</em>.
The red arrows in the middle mean that they are parallel so the slopes are the same.
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So the class must have at least 5 more students.
<span><u><em>Answer:</em></u>
45 ft</span>²<span> will be blue
<u><em>Explanation:</em></u>
<u>1- getting the area of the wall:</u>
area of the rectangle can be calculated as follows:
area = length * width
we are given that:
length = </span>
ft<span>
width = </span>
<span> ft
Now, substituting in the above rule, we can get the area as follows:
area = </span> * = 135 ft²<span>
<u>2- getting the area that would be pained blue:</u>
We are given that </span>
<span> of the area of the room would be painted blue, this means that:
area of blue = </span><span> * area of room
area of blue = </span><span> * 135
area of room = 45 ft</span>²<span>
Hope this helps :)</span>
45 ft</span>²<span> will be blue
<u><em>Explanation:</em></u>
<u>1- getting the area of the wall:</u>
area of the rectangle can be calculated as follows:
area = length * width
we are given that:
length = </span>
width = </span>
Now, substituting in the above rule, we can get the area as follows:
area = </span>
<u>2- getting the area that would be pained blue:</u>
We are given that </span>
area of blue = </span>
area of blue = </span>
area of room = 45 ft</span>²<span>
Hope this helps :)</span>