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3 years ago

Please help! (ignore the answer I chose)

Mathematics

1 answer:

Andrei [34K]3 years ago

5 0

The numerator factors as (t-8)(t+4), so the whole thing is (t-8)(t+4)/(t-8). Now we can cancel the t-8 AS LONG as t isn't equal to 8, otherwise, we are canceling a zero from both numerator and denominator which is invalid. What is left is t+4.

So your choice was right.

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Find the 64th term of the arithmetic sequence

Margaret [11]

Answer:

The 64th term of the arithmetic sequence is -1075.

Step-by-step explanation:

Arithmetic sequence:

In an arithmetic sequence, the difference between consecutive terms, called common difference, is always the same.

The nth term of an arithmetic sequence is given by:

$a_n = a_1 + (n-1)d$

In which $a_1$ is the first term.

−4,−21,−38

First term -4, so $a_1 = -4$

Common difference of $d = -38 - (-21) = -21 - (-4) = -17$

Thus

$a_n = a_1 + (n-1)d$

$a_n = -4 - 17(n-1)$

Find the 64th term of the arithmetic sequence

This is $a_{64}$ . So

$a_n = -4 - 17(n-1)$

$a_{64} = -4 - 17(64-1) = -4 - 1071 = -1075$

The 64th term of the arithmetic sequence is -1075.

8 0

3 years ago

PLEASE HELP ME ILL GIVE BRAINLIEST

victus00 [196]

Answer:

-36.5

Step-by-step explanation:

substitute 8.5 for v

8-(6(8.5)+2-(8.5))

8-(51+2-8.5)

8-44.5

edited cause I forgot the 8 at first :P

8 0

4 years ago

.194 times a million 1.94x10^5 19.4x10^-4 194x10^3 1.94x10^-5

Anit [1.1K]

Answer:

All of them are 194000 except 19.4x10^-4

Step-by-step explanation:

math

7 0

3 years ago

Can someone please help me!! If you get the answer correct will give brainliest

Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

did you already ask this one?

5 0

3 years ago

An e-commerce research company claims that 60% or more graduate students have bought merchandise on-line at their site. A consum

Rasek [7]

Answer:

We accept H₀ we don´t have enough evidence to conclude that a consumer group position is correct

Step-by-step explanation:

We have a case of test of proportion, as a consumer group is suspicious of the claim and think the proportion is lower we must develop a one tail test (left tail) Then

1.- Test hypothesis:

Null hypothesis H₀ P = P₀

Alternative hypothesis Hₐ P < P₀

2.- At significance level of α = 0,05 Critical value

z(c) = -1,64

3.-We compute z(s) value as:

z(s) = ( P - P₀ )/ √P*Q/n where P = 44/80 P = 0,55 and Q = 0,45

P₀ = 0,6 and n = 80

Plugging all these values in the equation we get:

z(s) = ( 0,55 - 0,6 ) / √(0,2475/80)

z(s) = - 0,05/ √0,0031

z(s) = - 0,05/0,056

z(s) = - 0,8928

4.-We compare z(s) and z(c)

z(s) > z(c) -0,8928 on the left side it means that z(s) is in the acceptance region so we accept H₀

7 0

3 years ago