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Mathematics

2 answers:

SpyIntel [72]3 years ago

5 0

Answer:

we need to see to circle to help repost this with an image

Step-by-step explanation:

lana [24]3 years ago

3 0

Answer

he diameter of the circle is 22 units.

x² + y² - 16x + 12y = 21

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Lisa purchased a hat for $10, a purse for $20, and a book for $23.The sales-tax rate was 7.2 percent. What was the total amount

Vlad [161]

From information given Lisa bought three items.

10 + 20 + 23 = 53 dollars ( which is total pre- tax cost)

The sales tax rate is at 7.2% . Value of this tax in dollars will be:

7.2 % of 53 → (7.2 / 100) × 53 → 0.072 × 53 = 3.816

So the tax rate value is 3.816

Total cost of items will be 53 + 3.816 = 56. 816

Rounded off to the nearest cent 56.816 = 56.80

Therefore Lisa paid a total of $ 56.80

8 0

3 years ago

a triangular prism has an isosceles right triangular base with a hypotenuse of square root of 32 and a prism height of 12. a squ

omeli [17]

Answer:

The lengths of the sides of the square base are $2\sqrt{2}\ units$

Step-by-step explanation:

The correct question is

A triangular prism has an isosceles right triangular base with a hypotenuse of square root of 32 and a prism height of 12. a square prism has a height of 12 and its volume is equal to that of the triangular prism. what are the dimensions of the square base, in simplest radical form?

we know that

The volume of a prism is given by the formula

$V=Bh$

where

B is the area of the base

h is the height of the prism

If the volumes of the solids are the same and their heights are the same, then the area of the base of the triangular prism must be equal to the area of the base of the square prism

step 1

Find the area of the base of the triangular prism

Remember that in a right isosceles triangle, the two legs are equal

Let

x ---> the length side of each leg

Applying the Pythagorean Theorem

$(\sqrt{32})^2 =2x^2$