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3 years ago

Evaluate the expression for the given values of the variables.

Mathematics

1 answer:

Dahasolnce [82]3 years ago

4 0

4(2m-n)-3(2m-n)

4(2(-15)- -18)-3(2(-15)- -18)
4(-30- -18)-3(-30- -18)
4(-12) -3(-12)
-48- -36
-12

The answer is C

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Please could I have some help :)

nirvana33 [79]

Answer:

a) x = 128 degrees

b) Angle APD is the arc angle, which is equal to the central angle x subtended by the arc. Therefore angle APD = 128 degrees (and not 116 degrees)

Step-by-step explanation:

Given:

attached diagram

ABC is a straight line

Solution:

a) Find x

ABC is a straight line

angle ABD = supplement of CBD = 180-CBD = 180-116 = 64 degrees.

x is the central angle of the arc APD

so angle ABD is the inscribed angle which equals half of the arc angle =>

angle ABD = x/2 = 64 degrees

Solve for x

x/2 = 64

x = 2*64

x = 128 degrees

Angle APD is the arc angle, which is equal to the central angle x subtended by the arc. Therefore angle APD = 128 degrees (and not 116 degrees)

5 0

3 years ago

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Rename 600,000= ten thousands

lyudmila [28]

For this case we have the following number:

600,000

We can rewrite this number as the product of two numbers.

We have then, mathematically:

600,000 = 60 * 10,000

Then, rewriting in words we have:

600,000 = sixty - ten thousand s

Answer:

Rewriting 600,000 we have:

600,000 = sixty - ten thousands

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3 years ago

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A machine can sew on 15 buttons in 3 min. How many buttons can it sew in 60 min?

Scorpion4ik [409]

In 60 minutes, the machine can sew 300 buttons. The machine sews 5 buttons a minute. 60 x 5 = 300

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3 years ago

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The equation y = 1.2x represents the rate, in beats per second, that Lee's heart beats. The graph represents the rate that Nancy

laiz [17]

Here’s the answer w the explanation. Answer: Lee’s is beating faster.

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2 years ago

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In problems 16-20, calculate the expected price in the year 2008 if you assume that there was a consistent 5% inflation rate and

Lena [83]

16. 72236.03
17. 2.87
18. 2.36
19. 9.29
20. 1.65
The exponential growth formula is as follows
$y=a(1+r)^{x}$ :
a is initial value
($27,225 17. gallon of gas, $1.08 18. dozen eggs, $0.89 19. movie admission, $3.50 20. mcdonalds hamburger, $0.62)
r is rate of increase (0.05)
x is time (2008-1988 = 20 years)
to solve plug in values for each one.
 $y=27225(1+0.05)^{20} = 72236.03$

$1.08(1+0.05)^{20} = 2.87$

$.89(1+0.05)^{20} = 2.36$

$3.50(1+0.05)^{20} = 9.29$

$.62(1+0.05)^{20} = 1.65$

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3 years ago