Answer:
Option D.
Step-by-step explanation:
First, let's do a little review of this excersice. Of the first 150 participants, 36 chose the first picture, and of the other 150 participants, p chose the first picture in the set.
Hence, the proportion of the participants who chose the first picture in the set is 36 300 p. Since more than 20% of all the participants chose the first picture, it follows that 36 0.20 300 !p . This inequality can be rewritten as p + 36 > 0.20(300). Since p is a number of people among the remaining 150 participants, p ≤ 150.
Choices A, B, and C are incorrect and may be the result of some incorrect interpretations of the given information or of computational errors.
Answer:
y - x + z
Step-by-step explanation:A good way to tackle this problem is to check for the signs of all the variables. In your original expression, x-y+z, x and y are positive and y is negative.
Answer:
There were 300 people at the meeting
Step-by-step explanation:
The number of people who drove to the meeting is equal to the number of people at the meeting times the percentage of people who drove
240 = people *80%
Change this to a decimal
240 = people *.8
Divide each side by .8
240/.8 = people *.8/.8
300 = people
There were 300 people at the meeting
Answer:
the answer is c your welcome ◄▄╔
Step-by-step explanation:
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<u>#7</u>
1. Find the volume of the pyramid (l×w×h/3); you should get 64cm³
2. Find the volume of the cube (l×w×h); you should get 512cm³
3. Add the two products; the glass paperweight's volume is 576cm³
<u>#8</u>
1. Find the surface area (SA) of the cube (area of one square×5); it is 320cm²
2. Find the SA of the pyramid (exclude the square base); it is 80cm² ((slant height×(length/2))×4)
3. Add the surface areas; the sum should be 400cm²