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sveta [45]
3 years ago
8

Please i need help!!!

Mathematics
1 answer:
Aloiza [94]3 years ago
4 0

Answer:

a. 2,112

b. 64

Step-by-step explanation:

a. Using the explanation in B, let's find every term and add them.

<u>Work:</u>

96, 94, 92, 90, 88, 86, 84, 82, 80, 78, 76, 74, 72, 70, 68, 66, 64, 62, 60, 58, 56, 54, 52, 50, 48, 46, 44, 42, 40, 38, 36, 34, 32.

32 is the 34th term, the last row.

<u>Add:</u>

2,112 books is your answer.

b.The following is a sequence, meaning that there's a repeated change for every number.

This change is: -2

We're asked to find the 17th term.

<u>Work:</u>

96, 94, 92, 90, 88, 86, 84, 82, 80, 78, 76, 74, 72, 70, 68, 66, 64.

64 is the amount of books on the 17th row.

*64 is the 17th term.

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<img src="https://tex.z-dn.net/?f=solve%20for%20%22m%22%20t%3D%5Cfrac%7Bms%7D%7Bm%2Bn%7D" id="TexFormula1" title="solve for &quo
dalvyx [7]

Answer:

\boxed{\sf \ \ \ m = -\dfrac{tn}{t-s} \ \ \ }

Step-by-step explanation:

Hello,

let s assume that m+n is different from 0

we have this equation and we need to find m as a function of t, s, and n

t=\dfrac{ms}{m+n}

<=>

(m+n)*t=ms\\\\ tm+tn=sm\\ (t-s)m = -tn\\ m = -\dfrac{tn}{t-s}

for t-s different from 0, so t different from s

hope this helps

4 0
3 years ago
Eliminate the parameter in the equations x = 5cos(t) – 7 and y = 5sin(t) 9. how can the rectangular equation be described?
Maksim231197 [3]

Recall that for all t,

cos²(t) + sin²(t) = 1

Now,

x = 5 cos(t) - 7   ⇒   (x + 7)/5 = cos(t)

y = 5 sin(t) + 9   ⇒   (y - 9)/5 = sin(t)

so that substituting into the identity above, we get

((x + 7)/5)² + ((y - 9)/5)² = 1

which we can rewrite as

(x + 7)²/25 + (y - 9)²/25 = 1

(x + 7)² + (y - 9)² = 25

and this is the equation of a circle centered at (-7, 9) with radius 5.

3 0
2 years ago
Which expression has the same value as the one below ?<br><br> 50 + (-17)
irina [24]

Answer:

=33

Step-by-step explanation:

8 0
2 years ago
Pam says that the temperature of liquid drops more in the first three minutes of cooling then it does between time nine minutes
liberstina [14]

Answer:

Pam is correct!

Step-by-step explanation:

Pam is correct it would be between nine minutes and 12!

5 0
3 years ago
What is the value of the expression when n=3 -2(5+n-8-3n)
Greeley [361]
-2n(5 + n - 8 - 3n)
-10n - 2n² + 16n + 6n²
4n² + 6n
7 0
3 years ago
Read 2 more answers
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