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Yuri [45]
3 years ago
13

The packaging lists a model airplane’s length as 10.5 in. It also gives the scale as 1:83. What is the length of the actual airp

lane to the nearest foot?
a.87ft
b.104ft
c.127ft
d.73ft
Mathematics
1 answer:
Lana71 [14]3 years ago
6 0
\bf \cfrac{\stackrel{model}{length}}{\stackrel{actual}{length}}\qquad 1:83\qquad \cfrac{1}{83}\implies \cfrac{1}{83}=\cfrac{10.5}{x}\implies x=\cfrac{83\cdot 10.5}{1}
\\\\\\
x=871.5~inches
\\\\\\
\textit{there are 12 inches in 1 foot, thus }
\\\\\\
871.5~\underline{in}\cdot \cfrac{ft}{12~\underline{in}}\implies 72.625~ft 
\qquad \approx 73~ft
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I believe the answer is d is this correct?
JulijaS [17]

Answer:

yes it is correct

Step-by-step explanation:

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5. One canned juice drink is 15% orange juice; another is 10% orange juice. How many liters of each should be mixed together in
hram777 [196]
X: liters of 15% orange juice
y: liters of 10% orange juice

x+y=5L

y=5L - x

x liters of 15% orange juice plus y liters of 10% orange juice makes 5 liters of 12% orange juice in equation form:

0.15x+0.10y = 0.12(5L)

0.15x+0.10(5L-x)=0.12(5L)

0.15x+0.5-0.10x=0.6

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3 years ago
Write the equation of the line that passes through (−3, 5) and (2, 10) in slope-intercept form
BigorU [14]
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y = mx + b
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so equation y = x +8

answer: <span>y = x + 8(first choice)</span>
8 0
3 years ago
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daser333 [38]

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ipn [44]
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The first is knowing what the numbers in your equation represent:

For example: y=mx+b in this case "b" is 9. b is the y-value when x=0. So the first point on our graph is (0,9). Next we have to pick an xvalue to solve for another y-coordinate.

I chose x= -3. Plug x into the equation to get y.
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So, our second point is (-3,0).

connect the points with a ruler to graph the line.

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3 years ago
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