What is the area of a circle with a diameter of 12.6 in.?

Mathematics

2 answers:

Masteriza [31]3 years ago

6 0

The answer would be 395.6in²

saul85 [17]3 years ago

3 0

392.6 try that as the answer

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What is the ratio of 3 1/2 inches to 4 2/3 feet in simplest form

Elden [556K]

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2 years ago

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210 balloons are filled for a reception this is 70% of the entire number balloons purchased which equation can be used to find t

Yuri [45]

Answer:

300 balloons.

Step-by-step explanation:

Given:

210 balloons are filled for a reception this is 70% of the entire number balloons purchased.

Question asked:

Which equation can be used to find the total number of balloons purchased ?

<u>Solution:</u>

Let total number of balloons purchased = $x$

70% of the number of balloons purchased = 210

$\frac{70}{100} \times x=210\\ \\ \frac{7x}{10} =210\\ \\ By\ cross\ multiplication\\ \\ 7x=210\times10\\ \\7x=2100\\\\ By\ dividing\ both\ sides\ by\ 7\\ \\ \frac{7x}{7} =\frac{2100}{7} \\ \\ x=300$

Therefore, total number balloons purchased was 300.

3 0

3 years ago

What is the equation of the line that passes through the point (1, 3) and is perpendicular to the line 2x+3y=15?

cricket20 [7]

Answer:

y = 1.5x + 1.5

Step-by-step explanation:

First, plot 2x + 3y = 15 on a graph. Then plot (1,3) on a graph. After that, draw a line that passes through (1,3) and forms 90 degrees angles with 2x + 3y = 15. Then find the equation of that line by finding the y-intercept (0, 1.5). Then head up to the intersection point (1.6153846153846, 3.9230769230769). Subtract 1.5 from y. (2.4230769230769) Then divide by 1.5 (1.6153846153846). Reverse the operations you just did (in reverse order) to get the equation y = 1.5x + 1.5.

(I don't know how to explain this too well. Here's a graph to make more sense of it.)