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3 years ago

What is the answer for f(-9)=

Mathematics

1 answer:

anyanavicka [17]3 years ago

7 0

Answer:

-9f

Step-by-step explanation:

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Help me please ill give brainlist

solmaris [256]

Answer:

106.8 in.

Step-by-step explanation:

The circumference of a circle:

C = 2πr

Substitute the given information into the formula.

C = 2(3.14)(17) = 106.8

5 0

3 years ago

Read 2 more answers

Given points A(-1, -2) and B(2, 4) where AP: BP=1:2, find the locus of point P.

koban [17]

Answer:

$x^2 + 4x + y^2 +8y = 0$

Step-by-step explanation:

Given

$A = (-1,-2)$

$B = (2,4)$

$AP:BP = 1 : 2$

Required

The locus of P

$AP:BP = 1 : 2$

Express as fraction

$\frac{AP}{BP} = \frac{1}{2}$

Cross multiply

$2AP = BP$

Calculate AP and BP using the following distance formula:

$d = \sqrt{(x - x_1)^2 + (y - y_1)^2}$

So, we have:

$2 * \sqrt{(x - -1)^2 + (y - -2)^2} = \sqrt{(x - 2)^2 + (y - 4)^2}$

$2 * \sqrt{(x +1)^2 + (y +2)^2} = \sqrt{(x - 2)^2 + (y - 4)^2}$

Take square of both sides

$4 * [(x +1)^2 + (y +2)^2] = (x - 2)^2 + (y - 4)^2$

Evaluate all squares

$4 * [x^2 + 2x + 1 + y^2 +4y + 4] = x^2 - 4x + 4 + y^2 - 8y + 16$

Collect and evaluate like terms

$4 * [x^2 + 2x + y^2 +4y + 5] = x^2 - 4x + y^2 - 8y + 20$

Open brackets

$4x^2 + 8x + 4y^2 +16y + 20 = x^2 - 4x + y^2 - 8y + 20$

Collect like terms

$4x^2 - x^2 + 8x + 4x + 4y^2 -y^2 +16y + 8y + 20 - 20 = 0$

$3x^2 + 12x + 3y^2 +24y = 0$

Divide through by 3

$x^2 + 4x + y^2 +8y = 0$

3 0

3 years ago

$200 in the bank account if she writes 6 checks for exactly $19.98 what expression describes the change in her bank account

Ad libitum [116K]

Step-by-step explanation:

$200 - 6 \times 19.98$

8 0

3 years ago

Read 2 more answers

Can someone please help ? Thank you

goldfiish [28.3K]

Answer: 25 times 50 = 1,250 inches every inch is 50 miles on the second map

Step-by-step explanation: hope i could help you

4 0

3 years ago

A package of 4 pairs of insulated socks costs $27.96. What is the unit price of the pairs of socks?

harkovskaia [24]

Answer:

1 pair of socks cost $6.99

Step-by-step explanation:

$27.96 divided by 4 = $6.99

Hope I helped :)

Please consider Brainliest :)

5 0

3 years ago