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marishachu [46]
3 years ago
8

A. Two numbers are in the ratio 5:7. When 3 is added to each number, the new ratio becomes 3 : 4. Find the numbers. ​

Mathematics
1 answer:
Usimov [2.4K]3 years ago
5 0

Answer:

answer is 3 and ratio of two different numbers

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Find an explicit formula for the geometric sequence -40,-20,-10......
garik1379 [7]

Answer:

The explicit formula for the geometric sequence is c(n) = -40\cdot \left(\frac{1}{2} \right)^{n-1}.

Step-by-step explanation:

By definition of geometric sequence, we should use the following expression:

c(n) = c_{1}\cdot r^{n-1}, n \ge 1 (1)

Where:

c_{1} - First term.

r - Geometric rate.

n - Position of the element within the series.

If we know that c_{1} = -40 and r = \frac{1}{2}, then the explicit formula for the geometric sequence is:

c(n) = -40\cdot \left(\frac{1}{2} \right)^{n-1}

The explicit formula for the geometric sequence is c(n) = -40\cdot \left(\frac{1}{2} \right)^{n-1}.

3 0
3 years ago
15 points PLEASE ANSWER
Xelga [282]

Answer:

D. (25π - 50) sq m

Step-by-step explanation:

Since ABCD is a square with the area of 100, we know that the dimensions are 10 by 10. With that, we can find that triangle ABC = 50 sq m because of (h*l)/2. Since A is the center of the circle that contains arc BD, we know that 10 is the radius of the quarter-circle ABC. Using (πr^2)/4 to get the area of the quarter-circle, we get that the quarter-circle ABC = 25π sq m. But the original triangle ABC in the quarter-circle is not shaded. Therefore, we subtract 50 from 25π, which leads to (25π - 50) sq m.

I hope this helped! :D

4 0
2 years ago
Pedro has a bag with 8 yellow marbles, 9 blue marbles, 12 green marbles, and 7 red marbles. What is the probability that Pedro w
Shalnov [3]

Step-by-step explanation:

15/36 = 41.6%

because there are 36 total marbles. and 15 of them are either red or yellow.

5 0
2 years ago
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Michael is measuring fabric for the costumes of a school play.he needs 47 feet of fabric.he has 12 1/3 yards of fabric.how many
nadezda [96]
He needs 3 and 1/3 yards
7 0
3 years ago
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The temperature at a point (x, y) is T(x, y), measured in degrees Celsius. A bug crawls so that its position after t seconds is
MrMuchimi

Answer:

attached below

Step-by-step explanation:

6 0
3 years ago
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