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2 years ago

I need help with math homework last question please help me ASAP

Mathematics

1 answer:

Evgen [1.6K]2 years ago

6 0

Answer:

yo need to do a grafic you need tu pud x and y en the grafic

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A city park is in the shape of a square. The area of the park is 441 yards2. How many feet long is one side of the park? A) 7 fe

IceJOKER [234]

Answer:

One side of the park is 63 feet.

C is the correct option.

Step-by-step explanation:

We have been given that the shape of the city park is a square and the area if the park is 441 square yards.We have to find the side of the park.

We know that the four sides of a square is equal and the area is given by

$A=\text{(side)}^2$

On substituting the value of area, we get

$441=\text{(side)}^2$

Take square root both sides and ignore the negative values of side

$\sqrt{441}=\text{side}$

On simplifying, we get

Side = 21 yards

Now, we know that

1 yard = 3 feet

Hence, we have

21 yards = 3×21 = 63 feet

Therefore, one side of the park is 63 feet.

C is the correct option.

3 0

2 years ago

R (-3,1) and S (-1,3) are points on a circle. If RS is a diameter, find the equation of the circle.

ELEN [110]

Answer:

$\sf (x+2)^2+(y-2)^2=2$

Step-by-step explanation:

If RS is the diameter of the circle, then the midpoint of RS will be the center of the circle.

$\sf midpoint=\left(\dfrac{x_s-x_r}{2}+x_r,\dfrac{y_s-y_r}{2}+y_r \right)$

$\sf =\left(\dfrac{-1-(-3)}{2}+(-3),\dfrac{3-1}{2}+1 \right)$

$\sf =(-2, 2)$

Equation of a circle: $\sf (x-h)^2+(y-k)^2=r^2$

(where (h, k) is the center and r is the radius)

Substituting found center (-2, 2) into the equation of a circle:

$\sf \implies (x-(-2))^2+(y-2)^2=r^2$

$\sf \implies (x+2)^2+(y-2)^2=r^2$

To find $\sf r^2$ , simply substitute one of the points into the equation and solve:

$\sf \implies (-3+2)^2+(1-2)^2=r^2$

$\sf \implies 1+1=r^2$

$\sf \implies r^2=2$

Therefore, the equation of the circle is:

$\sf (x+2)^2+(y-2)^2=2$

4 0

2 years ago

Mark has 20 books on his summer reading list. He has already read 65% of the books. How many books has Mark already read from hi

expeople1 [14]

Answer:

he read 13

Step-by-step explanation:

8 0

2 years ago

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If the diameter of a circle is 20mm, what is the area of the circle?

Vsevolod [243]

Answer:

314.16 sq mm

Step-by-step explanation:

formula for area of a circle = pi(r^2)

if the diameter is 20mm then the radius is 10 mm

When you plug in pi(10mm^2) you get 314.16 sq mm

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3 years ago

Ms. Neeson baked 30 cookies. 5 sixths of the cookies were oatmeal. How many oatmeal cookies did Ms. Neeson bake?

katen-ka-za [31]

Answer: u find 5/6 of 30 cookies. of means to multiply do 5/6*30=

Step-by-step explanation:

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2 years ago

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