Answer:
7 + (x/2) = 9.2
solve for x.
Step-by-step explanation:
We're hanging weights from a spring and measuring the distance of stretch. This is how those vegetable scales in grocery stores work (kind of). We know that the spring, with no weight, is 7 cm. So it can't get any shorter than this. We also know that for every kg of mass added, the spring stretches 0.5 cm. So, if you hung 3 kg of weight, the spring would have to stretch 0.5 * 3 = 1.5 cm. Add to that the 7 cm that it was originally and we have 8.5 cm of total length.
The second question is essentially answered by the first because the blank equation given in the first says
(initial length) + 1/2 * (mass added) = (total length)
The initial length will be a constant 7, the mass added we're told is to be x and the total length is to be y. Put those in their places and graph accordingly.
3) This is simply asking you to do what you've been doing, but in reverse. We have an equation, so we can now just plug in what we know and solve for what we don't.
7 + (x/2) = y
y = 9.2 in this case because it's representative of the total length, so we have
7 + (x/2) = 9.2
Now just solve for x.
1. The number of sample size 1 jelly beans in a 2-liter jar is <u>645</u>.
2. The number of sample size 2 jelly beans in a 2-liter jar is <u>640</u>.
3. The number of sample size 3 jelly beans in a 2-liter jar is <u>637</u>.
<h3>What is a mathematical operation?</h3>
A mathematical operation is an expression involving the use of mathematical operands and operators to compute values.
Mathematical operations use variables, numbers, and operators (addition, subtraction, division, and multiplication).
<h3>Data and Calculations:</h3>
Total weight = 1,150g
Weight of the jar = 440g
The total weight of the jelly beans = 710g (1,150 - 440)
Sample Size 1: the number of jelly beans = 645 (710/22.0 x 20)
Sample Size 2: the number of jelly beans = 640 (710/22.2 x 20)
Sample Size 3: the number of jelly beans = 637 (710/22.3 x 20)
Thus, the number of jelly beans in a 2-liter jar depends on the sample size of the jelly beans.
Learn more about mathematical operations at brainly.com/question/20628271
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Answer:
see the image attached
Step-by-step explanation:
Answer:
Option: 2 is correct.
( 2. Measuring the ingredients for concrete )
Step-by-step explanation:
<em>" As we know that Geometry is a branch of mathematics that deals with shape, size, line, angles and relative position.Also Architecture begins with geometry "</em>
1. checking the foundation of a building
4. The creating of a stained glass window ( since the design on the window may be any geometrical design)
3. To design a bridge (since in designing a bridge the angle is very essential i.e. at which angle the bridge will stand).
Hence, the correct option is:
2.Measuring the ingredients for concrete.
( since ingredients has nothing to do with geometry)