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3 years ago

5

Riley worked 5 1/4 hours on Monday 3 3/8 hours on Tuesday and 2 5/6 hours on Wednesday he rounded the hours to five 3 and 2 befo

re adding them together to get 10 hours did he make a high or low estimate

2 answers:

nydimaria [60]3 years ago

3 0

Answer:

Low estimate

Step-by-step explanation:

2 5/6 rounded is 3 so the total would be 11 hours if everything is rounded.

Zielflug [23.3K]3 years ago

3 0

Answer:

The answer is low

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In which quadrants do solutions for the inequality y is less than or equal to two sevenths times x plus 1 exist? i, iii, and iv

tigry1 [53]

The solutions will lie in all the four quadrants.

y≤2/7x+1

We have the following inequality:

y=2/7x+1

If x=0

y=2/7(0) +1

y=1

If y=0

x=-3.5

So the line passes through the points:

(0,1) and (-3.5,0)

To find the shaded region, let us take a point, namely, the origin and test it in the inequality:

y≤ 2/7x +1

0≤ 2/7(0) +1

0≤ 1 which is true

Since this is true, then the shaded region includes this point. This is shown below and as you can see the solutions exist in all four quadrants.

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2 years ago

If the translation of (x,y)->(x-5, y+2) was applied to the triangle ABC below, what would be the coordinates for A' after the

Rainbow [258]

Answer: (-3,0)

To get this answer, we subtract 5 from the x coordinate and add 2 to the y coordinate. Point A is located at (x,y) = (2,-2) so we see that x = 2 and y = -2

Subtract 5 from the x coordinate: x-5 = 2-5 = -3. The new x coordinate is -3

Add 2 to the y coordinate: y+2 = -2+2 = 0. The new y coordinate is 0.

Therefore, using the rule (x,y) --> (x-5,y+2) has the mapping (2,-2) ---> (-3,0)

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3 years ago

What is 44.84 times 9.84 =<br> what is 88.6 times5.01

slega [8]

44.85 * 9.84 = 441.2256

88.6 * 5.01 = 443.886

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3 years ago

If i choose two americans at random, what is the probability that one speaks english at home and the other does not?

Lyrx [107]

1/2 since there is only 2 and if one speaks english at home then the other may or may not

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3 years ago

Laura's school is holding an outdoor activities celebration event for its 20th anniversary. Laura decides to participate in the

Pachacha [2.7K]

Probabilities are used to determine the chances of Laura winning an activity

The value of p is 1/12
The expected score of the game is -1/6
The probability that she has a total score of 5 after two rounds is 0

<h3>How to calculate the value of p</h3>

To calculate the value of p, we make use of the following probability formula

$\sum P(x) = 1$

So, we have:

$\frac 3{12} + \frac 1{12} + \frac 4{12} + \frac 2{12} + p + \frac 1{12} = 1$

Collect like terms

$\frac 3{12} + \frac 1{12} + \frac 4{12} + \frac 2{12} + \frac 1{12} + p= 1$

Evaluate the sums, on the left-hand side

$\frac{11}{12} + p = 1$

Subtract 11/12 from both sides

$p = \frac 1{12}$

Hence, the value of p is 1/12

<h3>(b) How to calculate the expected score</h3>

This is calculated using the following expected value formula

$E(x) = \sum x * P(x)$

So, we have:

$E(x) = -3 * \frac{3}{12} -1 * \frac 1{12} + 0 * \frac 4{12} + 1 * \frac 2{12} + 2 * \frac 1{12} + 4 * \frac 1{12}$

Evaluate the products

$E(x) = -\frac{9}{12} - \frac 1{12} + \frac 2{12} + \frac 2{12} + \frac 4{12}$

$E(x) = -\frac 2{12}$

Simplify

$E(x) = -\frac 1{6}$

Hence, the expected score of the game is -1/6

<h3>(c) The probability that she has a total score of 5 after two rounds</h3>

From the table, we have:

$P(5) = 0$

For after two rounds, we make use of the following equation

$P(5) * P(5) = 0 * 0$

$P(5) * P(5) = 0$

Hence, the probability that she has a total score of 5 after two rounds is 0

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