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4 years ago

Which sequence can be defined by the recursive formula f (1) = 4, f (n + 1) = f (n) – 1.25 for n ≥ 1?

Mathematics

1 answer:

katovenus [111]4 years ago

4 0

Answer:C

Step-by-step explanation:

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The average test score of three students in a class is 81 percentage points. if one student's score goes up by 2 percentage poin

ehidna [41]

To the find average of the test scores, we need to find the mean.

To find the mean, all we need to do is add up all the numbers and then divide the answer by how many numbers there are

81 + 83 + 85 = 249

249 ÷ 3 = 83

Therefore, the new average is 83

Hope this helps

3 0

4 years ago

What does distance preserving mean

Tamiku [17]

Answer:

A rotation is distance preserving. All points in space are rotated but the distance between any 2 points before and after the rotation is preserved.

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3 years ago

Sara and her friends are going on a day trip to the fair. The total cost for taking the train is $178.75, and the cost of each f

lisov135 [29]

Answer:

50,75 per person for both tickets

3 0

3 years ago

Can some one please do this? thank you !

jenyasd209 [6]

Answer:

Step-by-step explanation:

6)a)

$5\sqrt{27}=5\sqrt{3*3*3}\\\\ =5*3\sqrt{3}\\\\ =15\sqrt{3}$

7a) y² - 5y - 14 = y² -7y +2y - 2*7

= y*(y - 7) + 2*(y - 7)

=(y - 7)(y + 2)

b) Use FOIL method

$(2\sqrt{5}+1)(3\sqrt{5}-1)=(2\sqrt{5}*3\sqrt{5})-((2\sqrt{5}*1)+1*3\sqrt{5})-1*1\\\\ =6*5-2\sqrt{5}+3\sqrt{5}-1\\\\ =30+(-2+3)\sqrt{5}-1\\ \\=29+\sqrt{5}$

c) Rationalize the denominator by multiplying the denominator and numerator by √12

$\frac{6}{\sqrt{12}}=\frac{6*\sqrt{12}}{\sqrt{12}*\sqrt{12}}\\\\=\frac{6\sqrt{2*2*3}}{12}\\\\=\frac{6*2\sqrt{3}}{12}\\\\=\frac{12\sqrt{3}}{12}\\\\=\sqrt{3}$

8 0

3 years ago

Can someone help me‼️

yaroslaw [1]

Answer:

55°

Step-by-step explanation:

180° - 125° = 55°

so angle 2 is 55 degrees

4 0

3 years ago

Read 2 more answers