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slavikrds [6]
3 years ago
11

Gordon bought lunch for $8.43. He paid with a $20 bill. How much change did he get back?

Mathematics
2 answers:
anzhelika [568]3 years ago
6 0

Answer:

$11.57

Step-by-step explanation:

20 - 8.43 is 11.57

Hope this helps.

iris [78.8K]3 years ago
4 0

Answer:

$11.57

Step-by-step explanation:

$20 - $8.43 = $11.57

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Kim is watching a space shuttle launch from an observation spot 2 miles away. Find the angle of elevation from Kim to the space
hammer [34]

Answer:

<h2><em>46.4°</em></h2>

Step-by-step explanation:

Find the diagrammatic representation in the attachment given.

We can see that the diagram is a right angled triangle. To get the angle of elevation, we will use one of the trigonometry identity SOH, CAH, TOA.

Given the adjacent of the triangle to be 2miles (observation spot from the point of launch)and the opposite (side facing the elevation angle) as 2.1miles (the height), we will use TOA.

tan∅ = opposite/adjacent

tan∅ = 2.1/2

tan∅  = 1.05

∅ = tan⁻¹1.05

∅ = 46.4°

<em>Hence the angle of elevation from Kim to the space shuttle, which is at a height of 2.1 miles is approximately 46.4°</em>

5 0
3 years ago
40 is what percent of 50
fredd [130]
40/50=0.8
0.8*100=80%
Hope this helps!
3 0
3 years ago
Read 2 more answers
Complete the sentence to explain how to use mental math to express 12/25 as a percent
Vlada [557]

Answer: It's 48%. See below.

Step-by-step explanation:

By definition, percent means out of a hundred. For instance, 10 percent is 10 out of 100.

One way to make \frac{12}{25} a percent is by making the denominator 100. In order to do so, multiply the numerator and the denominator by 4, since 25 times 4 is 100.

\frac{12}{25}  =  \frac{48}{100} = 48 %

This is very simple, and mental math is definitely possible. Hope this help.  

5 0
1 year ago
A pen costs $.59. How much would a dozen pens cost?
irinina [24]
Y= $0.59(x)
y= $0.59(12)
y=?

y is the total
x is the amount of pen

so you multiply the cost of each pen with the amount of pens
$0.59 times 12
8 0
3 years ago
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Amy ran 3/4 a mile. Write the distance Amy ran as a decimal.
dem82 [27]
0.75 of a mile Amy ran
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3 years ago
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