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lbvjy [14]
2 years ago
9

-10(n+30)=1/2(24-14n)

Mathematics
1 answer:
Pavel [41]2 years ago
6 0
N = -104 is the correct answer
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Find the first five terms of the sequence. an=-n2+2n
Julli [10]

If your sequence is this

an =   - {n}^{2}  + 2n \\ then \\ a1 =  - 1 + 2 = 1 \\ a2 =  - 4 + 4 = 0 \\ a3 =  - 9 + 6 =  - 3 \\ a4 =  - 16 + 8 =  - 8 \\ a5 =  - 25 + 10 =  - 15

3 0
3 years ago
Read 2 more answers
Estimate 815-281 to get the answer
Damm [24]

Answer:800-300

Step-by-step explanation:

since there is a 1 after the 8 it would go down to 800 and there is a 8 after the 2 so it would go up to 300

4 0
3 years ago
Read 2 more answers
Last question below, or select another question
abruzzese [7]

Answer:

30 adult tickets and 50 child tickets

Step-by-step explanation:

605 = 8.5a + 7c

80 = a + c

620 = (8.5*40) + (7*40)

605 = (8.5*30) + (7*50)

a = 30  c = 50

6 0
3 years ago
A rectangular poster is to contain 722 square inches of print. the margins at the top and bottom of the poster are to be 2 inche
Delvig [45]
Let
x ----------> the height of the whole poster
<span>y ----------> the </span>width<span> of the whole poster
</span>
We need to minimize the area A=x*y

we know that
(x-4)*(y-2)=722
(y-2)=722/(x-4)
(y)=[722/(x-4)]+2

so
A(x)=x*y--------->A(x)=x*{[722/(x-4)]+2}
Need to minimize this function over x > 4

find the derivative------> A1 (x)
A1(x)=2*[8x²-8x-1428]/[(x-4)²]

for A1(x)=0
8x²-8x-1428=0
using a graph tool
gives x=13.87 in

(y)=[722/(x-4)]+2

y=[2x+714]/[x-4]-----> y=[2*13.87+714]/[13.87-4]-----> y=75.15 in

the answer is
<span>the dimensions of the poster will be
</span>the height of the whole poster is 13.87 in
the width of the whole poster is 75.15 in

6 0
3 years ago
Answers :<br> A:6.6<br> B:7.2<br> C:7.8<br> D8.1
OLga [1]

Answer:

approx 7.81 Exactly: √61

Step-by-step explanation:

Use Pythag theorem: 5^2 + 6^2 = hyp^2 (line AS)

25 + 36 = 61

hyp = √61 or about 7.81

8 0
2 years ago
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