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MA_775_DIABLO [31]
3 years ago
15

Write an expression that shows how to usethe halving and doubling strategy to find 8 x 50

Mathematics
1 answer:
faust18 [17]3 years ago
3 0
Double of 50 is 100, so 28*100=2800, now half of the answer is 2800/2=1400
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Two similar cylinders have surface areas of 40 π square feet and 90 π square feet. What is the ratio of the height of the large
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Which statement best describes a chord of a circle? (1 point)
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Answer:

<em>c. It is a segment that connects two distinct points on a circle.</em>

Step-by-step explanation:

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Read 2 more answers
The cost for an order of 100 kilograms of steel bars is $230. The cost for an order of 150 kilograms of steel bars is $320. Writ
luda_lava [24]

Answer:

y = 9x/5 + 50

Step-by-step explanation:

We are represent the information as coordinate (x,y)

If the cost for an order of 100 kilograms of steel bars is $230, this is expressed as (100, 230)

Also if the cost for an order of 150 kilograms of steel bars is $320, this is expressed as;

(150, 320)

Find the equation of a line passing through the points. The standard form of the equation is expressed as y = mx+c

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m = y2-y1/x2-x1

m = 320-230/150-100

m = 90/50

m = 9/5

Get the y-intercept by substituting m = 9/5 and any point say (100, 230) into the expression y = mx+c

230 = 9/5(100)+c

230 = 9(20)+c

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c = 50

Get the required equation

y = mx+c

y = 9/5 x + 50

Hence an equation for the cost of an order of steel bars (y) in terms of the weight of steel bars ordered (x) is y = 9x/5 + 50

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Now for the other x value.

y = (-3)^2 - 2(-3) + 3

y = 9+9

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2 years ago
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Answer: it's A

Step-by-step explanation: Its A I bet nonono C

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