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mars1129 [50]
3 years ago
12

Pls help mathhhhhhhh

Mathematics
2 answers:
Talja [164]3 years ago
8 0
A = .20x where x = # checks written
B = 1.50(12) + .10x where x = # checks written and 1.50(12) is the YEARLY fee.

A = .20(250) = 50
B = 1.50(12) + .10(250) = 43, so the savings is $7
xz_007 [3.2K]3 years ago
5 0

You would save 7 dollars

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Answer:

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2 years ago
How do I solve 2x-y≥1<br> 2x+3y≤6
Ne4ueva [31]

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(-4,2)

Step-by-step explanation:

8 0
4 years ago
A crew of loggers cleared 1/2 acre of lumber in 4 days. How long will it take the same crew to clear 2 3/4 acres of lumber?
krok68 [10]
Set up a proportion of acres to days. 1/2 acre is to 4 days as 2 3/4 acres is to x days.

x= # days to clear 2 3/4 acres
2 3/4 to improper fraction= 11/4

(1/2)/4 = (11/4)/x
cross multiply

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Hope this helps! :)
6 0
4 years ago
Read 2 more answers
HELP PLEASE
Arturiano [62]

The plane will end up flying 5.02°.

The plan's speed relative to the ground will be 645.91 km/hr.

Solution:

Use the cosine formula,

a^{2}=b^{2}+c^{2}-2 b c \cos A

Substitute the given values in the formula,

\mathrm{R}^{2}=700^{2}+80^{2}-(2 \times 700 \times 80 \times \cos 45^\circ)

\mathrm{R}^{2}=490000+6400-(112000 \times\frac{1}{\sqrt{2} } )

\mathrm{R}^{2}=496400-79195.95

\mathrm{R}^{2}=417204.049

Taking square root on both sides, we get

R = 645.91 km/hr

This is the grouped speed of the aircraft.

To find θ use sine rule.

$\frac{\sin C}{c}=\frac{\sin A}{a}

$\frac{\sin \theta}{80}=\frac{\sin 45}{645.91}

Do cross multiplication, we get

${\sin \theta}}=\frac{\sin 45}{645.91}\times 80

${\sin \theta}}=\frac{\frac{1}{\sqrt{2} } }{645.91}\times 80

sin θ = 0.0875

θ = 5.02°

This is known as the drift angle and is the correction the pilot should apply to remain on course.  

The heading is the direction the aircraft's nose is pointing which is

The track is the actual direction over the ground which is θ = 5.02°

An alternative method to this would be to separate each vector into vertical and horizontal components and add.

The resultant can be found using Pythagoras.

7 0
4 years ago
The square root of 125 is between what two numbers
Otrada [13]

The square root of 125 is in between 11 and 12. It is 11.1803.

6 0
4 years ago
Read 2 more answers
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