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3 years ago

Sam bought 3 pens for $0.49

Mathematics

1 answer:

Zigmanuir [339]3 years ago

3 0

Answer:

The answer should be 3.15

Step-by-step explanation:

Multiply $0.49 by 3 and you get $1.47.

Add $1.59 and $1.47 and you get $2.97

Add $2.97 plus 6% and you get 3.1482

$3.15.

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PLEASE HELP AS SOON AS POSSIBLE!!!!WILL GIVE BRAINLY TO CORRECT ANSWER!!!!

Mice21 [21]

Answer:

The correct option which best describes this method is:

Find half of 24 to calculate the radius. Then square the radius and multiply the result by $\pi$

Option D is correct option.

Step-by-step explanation:

The circumference of table top = 24 $\pi$ inches

We need to find area of table top

The formula used to find area is: $Area = \pi r^2$

We need to find radius of tabletop.

The formula used to find circumference is: $Circumference = 2\pi r$

Putting value of circumference we can find radius

$Circumference = 2\pi r\\24\pi =2\pi r\\r=\frac{24\pi}{2\pi}\\r=12$

So, radius of table top = 12

Now, finding the area:

$Area = \pi r^2\\Area=\pi(12)^2\\Area=3.14(144)\\Area=452.16\:inches^2$

So, the correct option which best describes this method is:

Find half of 24 to calculate the radius. Then square the radius and multiply the result by $\pi$

Option D is correct option.

5 0

3 years ago

For which values of x is the expression undefined? x2 – 49 x2 – 16

Lyrx [107]

You meant to say x^2 - 49 and the second binomial is x^2 - 16.

x^2 - 49 = (x - 7) (x + 7).

Set each factor to 0 and solve for x individually.

x - 7 = 0

x = 7

x + 7 = 0

x = -7

Do the same for x^2 - 16.

Here is the set up:

x^2 - 16 = (x - 4) (x + 4).

Take it from here.

4 0

3 years ago

How do you solve #23?

scZoUnD [109]

Answer:

m= 67.5 and n=56.25

Step-by-step explanation:

180-15=165

165/2= 82.5

90-15= 75

75+75= 150

180-150=30

30+82.5= 112.5

180- 112.5= 67.5

m= 67.5

180-67.5= 112.5

112.5/2= 56.25

n= 56.25

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1 year ago

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PLEASE HELP ASAP WILL GIVE BRAINLIEST! :) sorry for the quality.

ss7ja [257]

Answer:

y=3x—1

Step-by-step explanation:

The line contains point (2,5)

so if we put x=2 in the equation, that'll give us y=5

only option that contains point (2,5) is:

$y = 3x - 1 \\ (5) = 3(2) - 1 \\ 5 = 5 \: true$

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