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Tema [17]
3 years ago
15

Please help me with this. This problem is actually making my life worst at the moment. Please, someone, help me.

Mathematics
1 answer:
Xelga [282]3 years ago
7 0
OMG !!!!!!! I HAVE THE SAME QUESTION TO ASK

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Which expression is equivalent to 2.2 − 0.5(0.6x − 1.8) ?
VARVARA [1.3K]

Answer:

the answer is D 3.1 − 0.3x

hope this helps


5 0
3 years ago
If in a sample of 355 adult males, we have a mean total cholesterol level of 185 mg, with s = 16. What is the 95% confidence int
sladkih [1.3K]

Answer:

Step-by-step explanation:

We want to determine a 95% confidence interval for the mean total cholesterol level of all males.

Number of sample, n = 355

Mean, u = 185 mg

Standard deviation, s = 16

For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean +/- z ×standard deviation/√n

It becomes

185 +/- 1.96 × 16/√355

= 185 +/- 1.96 × 0.849

= 185 +/- 1.66404

The lower end of the confidence interval is 185 - 1.66404 =183.336

The upper end of the confidence interval is 185 + 1.66404 = 186.66

Therefore, with 95% confidence interval, the mean total cholesterol level of all males is between 183.336 mg and 186.66 mg

5 0
3 years ago
What is the simplified form of this expression? (8x − 7) + (-2x − 9) − (4x − 3)
Murljashka [212]

Answer:

The answer to your question is:         2x -13

Step-by-step explanation:

         Simplified                             (8x − 7) + (-2x − 9) − (4x − 3)

                                                       8x - 7 - 2x - 9 - 4x + 3

         Simplified like terms            8x - 2x - 4x - 7 - 9 + 3

                                                       2x -13                                                        

4 0
3 years ago
Read 2 more answers
determine whether a parallelogram with vertices A(-1, -2), B(-2, 0), C(0, 1), and D(1, -1) is a rectangle, rhombus, or square. G
olga55 [171]

Answer:

Here, the coordinates aren't telling special characteristic of any shape, so it would be Paralleogram

In short, Your Answer would be Option B

Step-by-step explanation:

8 0
3 years ago
A jacket costs $35 and has an 8 percent tax rate
sleet_krkn [62]
After tax price $37.80
Sale tax - 8% or $2.80
6 0
3 years ago
Read 2 more answers
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