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3 years ago

What is the solution to -2(8x-4) 2x+5?

Mathematics

2 answers:

-Dominant- [34]3 years ago

4 0

Answer:

that would be -2200 sorry if im wrong

Step-by-step explanation:

Westkost [7]3 years ago

4 0

-32x2 +16x+5 is the answer

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You are a meteorologist that places temperature sensors all of the world, and you set them up so that they automatically e-mail

solniwko [45]

Answer:

If the first e-mail you got from sensor S indicates a daily high over 80 degrees, the probability that the sensor is placed in Maine = 0.01156

Step-by-step explanation:

Let the probability of placing the sensor S at Maines be P(M) = 0.05

Probabilty of placing the sensor S in the Sahara desert = P(S) = 1 - P(M) = 1 - 0.05 = 0.95 (this is because the meteorologist is confident that the sensor is at either of the two places.

Let the probability of a high temperature of 80 degrees or more = P(T)

Probability of the sensor picking up temperature of 80 degrees or more given that it is in Maine = P(T|M) = 20% = 0.20

Probability of the sensor picking up temperature of 80 degrees or more given that it is in the Sahara desert = P(T|S) = 90% = 0.90

From the definition of rhe conditional probability

P(A|B) = P(A n B) ÷ P(B)

P(A n B) = P(A|B) × P(B)

If the first e-mail you got from sensor S indicates a daily high over 80 degrees, what is the probability that the sensor is placed in Maine?

The required probability = P(M|T)

P(M|T) = P(M n T) ÷ P(T)

P(T) = P(M n T) + P(S n T)

P(M n T) = P(T|M) × P(M) = 0.20 × 0.05 = 0.010

P(S n T) = P(T|S) × P(S) = 0.90 × 0.95 = 0.855

P(T) = 0 010 + 0.855 = 0.865

P(M|T) = P(M n T) ÷ P(T)

P(M|T) = (0.010/0.865) = 0.01156

Hope this Helps!!!

7 0

3 years ago

Convert the fraction to a decimal 3/5

Rasek [7]

That would be 0.6 I believe :)

4 0

4 years ago

Read 2 more answers

Graph a triangle (STU) and reflect it over the y-axis to create triangle ST'U'.

lukranit [14]

The x-coordinates of $\triangle S'T'U'$ will be the negation of the x-coordinates of $\triangle STU$

The line segment from S to the y-axis equals the line segment from S' to the y-axis. Similarly, the line segment from T to the y-axis equals the line segment from T' to the y-axis

See attachment for $\triangle STU$ and $\triangle S'T'U'$

In order to solve this question, I will make the following assumptions.

Assume that the coordinates of $\triangle STU$ are

$S = (4,5)$

$T = (5,9)$

$U=(3,8)$

Refer to attachment for illustrations

(1) Reflect $\triangle STU$ over y-axis and describe the transformation

To reflect $\triangle STU$ across the y-axis, the following rule must be followed

$(x,y) \to (-x,y)$

This means that:

$S = (4,5) \to S' = (-4,5)$

$T = (5,9) \to T' = (-5,9)$

$U=(3,8) \to U'=(-3,8)$

The description of the transformation is as follows:

Notice that the signs of the x-coordinates $\triangle STU$ and $\triangle S'T'U'$ of both triangles are different.

In other words, if the x-coordinate of one is positive, then the other will have a negative x-coordinate; and vice versa.

(2) Compare the segments and the line of reflection

To reflect across the y-axis means that the reflecting line is the y-axis, itself.

The distance between a point to the y-axis is the absolute value of the x-coordinate.

So, the distance between S and the y-axis is:

$S = |4| = 4$

The distance between S' and the y-axis is:

$S' = |-4| = 4$

We can conclude that the two line segments are equal.

This is the same for other point T and T' because of the formula used above.

From T and T' to the y-axis is:

$T =|5| =5$

$T' =|-5| =5$

Read more at:

brainly.com/question/938117

8 0

3 years ago

I need help with solving a system of equations using elimination

Nataliya [291]

Answer:

do it your self.

Step-by-step explanation:

7 0

3 years ago

Caleb is planning a visit to an amusement park. He wants to figure out how many roller coasters he could ride and how many shows

asambeis [7]

Let r and s represent the number of times Caleb can ride the roller coaster and watch a show, respectively. The time Caleb needs to allow for each roller coaster ride is (wait time) + (ride time) = (30 +5) min = 35 min. Then we can write the equations
r - s = 3
35r +25s ≤ 345

Adding 25 times the first equation to the second, we get
25(r -s) +(35r +25s) ≤ 25(3) +(345)
60r ≤ 420 . . . . . . collect terms
r ≤ 7 . . . . . . . . . . . divide by 60

Caleb can ride a maximum of 7 roller coasters and watch 4 shows in 345 minutes.

_____
The problem can obviously be worked using two equations instead of one equation and an inequality. It isn't clear until the final answer that the number of minutes comes out exactly the amount needed, which is why we chose an inequality.

5 0

4 years ago

What is the solution to -2(8x-4) 2x+5?​

What is the solution to -2(8x-4) 2x+5?