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Artyom0805 [142]
3 years ago
11

Correct answer gets brainlest

Mathematics
2 answers:
BlackZzzverrR [31]3 years ago
6 0

Step-by-step explanation

(s + d + f + g + x) ÷ 5 = 86

so (s + d + f + g + x) = 430

Now we need to find ?

(s + d + f + g + x + ?) = something that when ÷ by 6 should equal 87

ANSWER : 92 ~ Correct!

murzikaleks [220]3 years ago
3 0

Answer: She needs to score at least a 98 on the sixth quiz to raise her average to at least 88.

Step-by-step explanation:

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2y + 5x – z = 4y + 6x solve for y
Dmitry_Shevchenko [17]
The answer should be:
Y=-1/2x1
5 0
3 years ago
50 POINTS HELP/BRAINIEST
Zinaida [17]

Answer:

Proof:

By the inscribed angle theorem, we know that angle BAC is equal to angle DEC. By the second corollary to the inscribed angle theorem, we know that line segment AE is perpendicular to line segment AC. Therefore, line segment AE is tangent to circle C.

Step-by-step explanation:

Analyze and ensure the answer is correct.

5 0
2 years ago
Read 2 more answers
Suppose that the lifetime of tv tubes are normally distributed with a standard deviation of 1.1 years. Suppose that exactly 20%
IrinaK [193]

Answer:

4.924 years

Step-by-step explanation:

Lets denote X the lifetime of a tv tube (In years). X has distribution N(\mu, 1.1) , with \mu unknown.

We know that P(X < 4) = 0.2. Using this data, we can find the value of \mu throught standarization.

Lets call Z = \frac{X - \mu}{1.1} the standarization of X. Z has distribution N(0,1), and its cummulative function, \phi is tabulated. The values of \phi can be found in the attached file.

P(X < 4) = P(\frac{X - \mu}{1.1} < \frac{4 - \mu}{1.1}) = P(Z < \frac{4 - \mu}{1.1}) = \phi(\frac{4 - \mu}{1.1}) = 0.2

The value q such that \phi (q) = 0.2 doesnt appear on the table. We can find it by using the symmetry of the normal density function. The opposite of q, -q must verify that \phi(-q) = 0.8 , hence -q must be equal to 0.84. Thus, q = -0.84

But this value of q should match with the number \frac{4 - \mu}{1.1} , so we have

\frac{4- \mu}{1.1} = -0.84

4 - \mu = 1.1 * (-0.84) = -0.924

\mu = 4 - (-0.924) = 4.924

Thus, the expected lifetime of TV tubes is 4.924 years.

I hope this works for you!

Download pdf
7 0
4 years ago
2 7/8 plus 3 2/8 plus 1 1/8
Olin [163]

Answer:

7.25

Step-by-step explanation:

2 7/8 + 3 2/8 * 1 1/8 = 7.25

7 0
4 years ago
Read 2 more answers
Given the function f(x) = x + 1 and the Linearr function g(x) which function has a greater value when x = 2
Novay_Z [31]

Answer:

C. f(x) and g(x) are the same when x = 2

Step-by-step explanation:

FINDING F(X)

If you plug in x = 2 into f(x) = x+ 1, we get the expression:

   x + 1

=  2 + 1

=  3

FINDING G(X)

By looking on the graph, we see that g(2) = 3.

Since they both equal 3 when x=2, the answer choice is C: f(x) and g(x) are the same when x = 2.

8 0
2 years ago
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