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4 years ago

Forty-two is what percent of 70?

Mathematics

1 answer:

vaieri [72.5K]4 years ago

3 0

42 is 60% of 70, find this answer by dividing 42 by 70

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Why do axioms exist in geometry

insens350 [35]

Our three axioms A1,A2 and A3 for affine plane geometry are consistent since there is at least one model for these axioms. However this system is incomplete because in this system there exist relevant statements which cannot be either proven or disproven. Consider for example the statement A7.

7 0

3 years ago

At pizza Pi, 8% of the pizzas made last week had extra cheese. If 2 pizzas had extra cheese, how many pizzas in all were made la

kondor19780726 [428]

Answer:

$25\ pizzas$

Step-by-step explanation:

we know that

2 pizzas that had extra cheese represent 8% of the total of pizzas

by proportion

Find the number of total pizzas

$\frac{2}{8\%}=\frac{x}{100\%}\\ \\x=100*2/8\\ \\x=25\ pizzas$

7 0

3 years ago

What is the diameter of circle T?

Ratling [72]

Answer:

$Diameter = 16$

Step-by-step explanation:

Given

$\theta = 72$

$Sector = \frac{64}{5}\pi$

Required

Calculate the diameter

The area of a sector is:

$Area = \frac{\theta}{360} * \pi r^2$

Substitute values for Area and $\theta$

$\frac{64}{5}\pi = \frac{72}{360} * \pi r^2$

Divide both sides by $\pi$

$\frac{64}{5} = \frac{72}{360} * r^2$

Make $r^2$ the subject

$\frac{64*360}{5*72} = r^2$

$\frac{64*360}{360} = r^2$

$64 = r^2$

Take positive square roots of both sides

$\sqrt{64} = r$

$8 = r$

$r = 8$

The diameter is then calculated as:

$Diameter = 2r$

$Diameter = 2*8$

$Diameter = 16$

5 0

3 years ago

you know that the area of a circle is 113.04. Using 3.14 for pi, can you determine the radius, diameter and circumference

zaharov [31]

Answer:

I don't know

Step-by-step explanation:

you just need to see this video

how I learned

5 0

2 years ago

you deposit $2000 in an account earning 6% interest compounded continuously. How much will you have in the account in 15 years?

Zielflug [23.3K]

Answer:

$4793.12

Step-by-step explanation:

The first step in working out the amount after 15 years is to convert the percentage of 6% to a decimal. You can do this by dividing 6 by 100, this gives you 0.06. This is because a percentage is out of 100.

The next step is to add 1 to the value of 0.06, this gives you 1.06. You would add 1 as you are working out a percentage increase.

The final step is to multiply the amount of $2000 by the value of 1.06 to the power of 15, this gives you 4793.12 (rounded to 2 decimal places). This is because we are working out the percentage of $2000 and then adding that on to be recaluclated with the new amount.

1) Divide 6 by 100.

$6/100=0.06$

2) Add 1 to 0.06.

$1+0.06=1.06$

3) Multiply 2000 by 1.06 to the power of 15.

$2000*1.06^{15}=4793.12$

8 0

3 years ago