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Sonja [21]
3 years ago
12

ANSWER FAST PLZ 65 POINTS!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Snezhnost [94]3 years ago
8 0

Area of a circle is found using the formula: A = PI x r^2 where r is the radius of the circle, which is half the diameter.

Using the information in the problem you have:

A= PI x 15^2

A = PI x 225

A = 706.5 sq. In.

lawyer [7]3 years ago
5 0

Answer:

A =706.5 in^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2 where r is the radius

We are given the diameter

r = d/2  = 30/2 = 15

A = pi * 15^2

A = pi*225

We can approximate pi by 3.14

A = (3.14)*225

A =706.5 in^2

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solniwko [45]
1. tanA = 12 / 25 = 26.

2. radius = 38.4 / 2 = 19.2.
    14.7^2 + b^2 = 19.2^2 => b = 12.4, by pythagorean theorem.
    Finally, x = 19.2 - 12.4 = 6.8.
3 0
3 years ago
Which equation matches the function described by the table?
Archy [21]
The actual answer is C. y = 5x + 2.

This is the answer because look at the table. I am gonna plug in the numbers.

2 = 5(0) + 2.

7 = 5(1) + 2.

12 = 5(2) + 2.


As you can see all those statements are true.

I don’t know how to explain it without talking and pointing, but basically all you have to do is plug the numbers into the equations and see which one is true.
8 0
3 years ago
Please help ASAP!<br><br> what is x=-b/2a?
valina [46]

This is the formula to solve for the vertex.

Example Question:

Find the vertex of y = -0.5x^2 + 100x

-b/2a = -100/2(-0.5) = -100/-1 = 100

The x coordinate of the vertex is 100.

Best of Luck!

P.S. this is 1000th question i've answered :)

5 0
4 years ago
Riley is saving up to buy a new television. She needs a total of $1,049.77. Riley has saved $200.79 already and earns $77.18 per
Xelga [282]

11 weeks are required for Riley to work to save enough money to buy the new television

<h3><u>Solution:</u></h3>

Given that Riley needs a total of $1,049.77

Riley has saved $200.79 already and earns $77.18 per week at her job

To find: Number of weeks Riley need to work to save enough money to buy the new television

Remaining amount needed = $1,049.77 -  $200.79

Remaining amount needed = $ 848.98

Let "n" be the number of weeks Riley need to work to save enough money to buy the new television

Also she earns $77.18 per week at her job

1 week ⇒ $ 77.18

"n" weeks ⇒ $ 848.98

Therefore, by cross multiplication,

n \times 77.18 = 1 \times 848.98\\\\n = \frac{848.98}{77.18}\\\\n = 11

Therefore 11 weeks are required for her to work to save enough money to buy the new television

<h3><u>Method 2:</u></h3>

<em>Total amount = amount already saved + ($77.18 per week at her job)("n" weeks)</em>

1,049.77 = 200.79 + (77.18)(n)

1049.77 - 200.79 = 77.18n

848.98 = 77.18n

n = \frac{848.98}{77.18}

n = 11

Therefore 11 weeks are required for her to work to save enough money to buy the new television

5 0
4 years ago
Help please please help
Semenov [28]

Answer:

Step-by-step explanation:

1,8

5,7

2,3

3 0
3 years ago
Read 2 more answers
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