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KatRina [158]
3 years ago
6

Determine the value of y if x is -11.

y=x^2-8" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
omeli [17]3 years ago
4 0

Answer:

113

Step-by-step explanation:

y=(11)²-8

y=121-8

y=113

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Arithmetic sequences et sn} be an arithmetic sequence that starts with an initial index of 0. The initial term is 3 and the comm
navik [9.2K]

Answer:

(a) The value of s_z is (z+1)(3-z).

(b) The next term in the sequence is -2.

Step-by-step explanation:

(a)

It is given that arithmetic sequence that starts with an initial index of 0.

The initial term is 3 and the common difference is -2.

a_0=3

d=-2

We need to find the value of s_z.

s_z=\sum_{n=0}^{n=z}(a+nd)

where, a is initial term and d is common difference.

s_z=\sum_{n=0}^{n=z}(3-2n)

The sum of an arithmetic sequence with  initial index 0 is

s_n=\frac{n+1}{2}[2a+nd]

where, a is initial term and d is common difference.

Substitute n=z, a=3 and d=-2 in the above formula.

s_z=\frac{z+1}{2}[2(3)+z(-2)]

s_z=\frac{z+1}{2}[2(3-z)]

s_z=(z+1)(3-z)

Therefore the value of s_z is (z+1)(3-z).

(b)

The given arithmetic sequence is

7, 4, 1, ...

We need to find the term in the sequence.

In the given arithmetic sequence the first term is

a=7

The common difference of the sequence is

d=a_2-a_1\Rightarrow 4-7=-3

The first term is 7 and common difference is -3.

Add common difference in last given term, i.e., 1, to find the next term of the sequence.

1+(-3)=1-3=-2

Therefore the next term in the sequence is -2.

3 0
4 years ago
Please helppp meeeeeeee
natka813 [3]

Answer:

i dont know if this is right but i think that would be the second one

Step-by-step explanation:

i dont know if this is right but i think that would be the second one

3 0
3 years ago
What is 9 more than 2 multiplied by f?? i have a test coming up soon
nignag [31]

Answer:

2f+9

Step-by-step explanation:

3 0
3 years ago
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For each ornament that a worker makes ,he is paid $1.15 3ach . He makes 4 ornaments every 15 minutes . Find the amount earned by
katen-ka-za [31]

Answer:

hi sorry but i dont know what is the answer

Step-by-step explanation:

im very very sorry

6 0
3 years ago
Read 2 more answers
Four families went out for lunch. The total food
dybincka [34]

Answer:

Each family spent about 34.25 on dinner

Step-by-step explanation:

$167 - $30 (tip) = 137

137 ÷  4 (for each family) = 34.25

BUT

if each family is seperate than they each spent about 11.75 on dinner

167 - (30 x 4) = 47

47 ÷  4 = 11.75

I'm pretty sure the first one is the answer though

7 0
3 years ago
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