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3 years ago

This is due in a hour

Mathematics

1 answer:

Dimas [21]3 years ago

6 0

Formula- A = π r²
a= area
r= radius

diameter of the circle- 3.75 x 2 = 7.5

hope this helps :)

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Whats the inverse function of d(t)=70t

Charra [1.4K]

Answer:

d^-1(t)=t/70

Step-by-step explanation:

8 0

3 years ago

Solve 5x^2 − 3x + 17 = 9.

Vedmedyk [2.9K]

Answer:

The roots of the equation are x = $\frac{3+\sqrt{151}i}{10}$ and x = $\frac{3-\sqrt{151}i}{10}$

and there are no real roots of the equation given above

Step-by-step explanation:

To solve:

5x² − 3x + 17 = 9

⇒ 5x² − 3x + 17 - 9 = 0

⇒ 5x² − 3x + 8 = 0

Now,

the roots of the equation in the form ax² + bx + c = 0 is given as:

x = $\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

in the above given equation

a = 5

b = -3

c = 8

therefore,

x = $\frac{-(-3)\pm\sqrt{(-3)^2-4\times5\times8}}{2\times5}$

x = $\frac{3\pm\sqrt{9-160}}{10}$

x = $\frac{3+\sqrt{-151}}{10}$ and x = $\frac{3-\sqrt{-151}}{10}$

x = $\frac{3+\sqrt{151}i}{10}$ and x = $\frac{3-\sqrt{151}i}{10}$

here i = √(-1)

Hence,

The roots of the equation are x = $\frac{3+\sqrt{151}i}{10}$ and x = $\frac{3-\sqrt{151}i}{10}$

and there are no real roots of the equation given above

7 0

3 years ago

Which type of triangle, if any, has side lengths of 11, 15, and 25?

abruzzese [7]

Answer:

Scalene triangle

Step-by-step explanation:

An equilateral triangle has 3 equal sides.

An isosceles triangle has 2 equal sides.

A scalene triangle has no equal sides.

4 0

3 years ago

Read 2 more answers

It takes 0.5 gallon of cream to make 1 pound of butter.

worty [1.4K]

Answer:

0.5 pounds of butter.

Explanation

X pounds for 0.25 gallons.

0.5 gallon of cream - 1 pound of butter

0.25 gallons of cream - X pounds of butter

Applying cross multiplication:

0.5X = 0.25

X = 0.25 over 0.5 or 0.25/0.5

X = 0.5

Therefor, you could make 0.5 pounds of butter with 0.25 gallons of cream.

7 0

2 years ago

You start with $40 in your bank account and deposit $18 each week. At the same time, your friend starts with $220 but withdraws

AnnyKZ [126]

By the seventh week you both will have $148. Hope this helps!

7 0

3 years ago

This is due in a hour ​

This is due in a hour