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3 years ago

Algebraic expression 7 plus 3 minus 2t

Mathematics

2 answers:

notka56 [123]3 years ago

6 0

The simplified expression would be:

10-2t

Vilka [71]3 years ago

4 0

Answer:

Step-by-step explanation:

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HWLP PLEASE I don't know answer

netineya [11]

Z + 3z + 1 + 204 + 54 = 360
4z + 259 = 360
4z = 360 - 259
4z = 101
z = 101/4
z = 25.25 °

7 0

3 years ago

Southwest Co-op produces bags of fertilizer, and it is concerned about impurity content. It is believed that the weights of impu

Harman [31]

Answer:

a) 0.216

b) 0.1587

c) 0.369

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 12.2 grams

Standard Deviation, σ = 2.8 grams

We are given that the distribution of weights of impurities per bag is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(contains less than 10 grams of impurities)

P(x < 10)

$P( x < 10) = P( z < \displaystyle\frac{10 - 12.2}{2.8}) = P(z < -0.7857)$

Calculation the value from standard normal z table, we have,

$P(x < 10) =0.216= 21.6\%$

b) P(contains more than 15 grams of impurities)

P(x > 15)

$P( x > 15) = P( z > \displaystyle\frac{15 - 12.2}{2.8}) = P(z > 1)$

$= 1 - P(z \leq 1)$

Calculation the value from standard normal z table, we have,

$P(x > 610) = 1 - 0.8413 = 0.1587 = 15.87\%$

c) P(contains between 12 and 15 grams of impurities)

$P(12 \leq x \leq 15) = P(\displaystyle\frac{12 - 12.2}{2.8} \leq z \leq \displaystyle\frac{15-12.2}{2.8}) \\\\= P(-0.0714 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -0.0714)\\= 0.841 - 0.472 = 0.369 = 36.9\%$

$P(12 \leq x \leq 15) = 36.9%$

d) The mean divide the data in exactly two parts. Since 15 is farther away from the mean as compared to 10, the probability obtained in part (b) is smaller as compared to probability obtained in part (a).

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4 years ago

What is the value of 4x(x3−2) when x=−3?

Kaylis [27]

Answer:

-23

Step-by-step explanation:

Because it is.

Mark as brainliest PLZ! It will make my day! Thank you!

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2 years ago

Find the area of each shaded square (in square units).

denis-greek [22]

Each square unit is 11 in each side

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3 years ago

Tom’s telephone company charges a flat fee of $33.00 a month, plus $0.10 a minute for all long-distance calls made during the mo

OleMash [197]

F(x)= 33+.10x. Since its 10 cents per minute, x would represent the number of minutes Tom uses.

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3 years ago