The angles of a quadrilateral measures 80,100. 100 and 80 in this order . what kind of quadrilateral has this shape? how do you know?

Answers

Answer 1
Answer:
The quadrilateral is an isosceles trapezoid because it has two adjacent, equal acute angles and two adjacent, equal obtuse angles.

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Which expression is equal to 7/8

Answers

7/8 .. *2 = 15/16

7/8 ...* 5 = 35/40


7/8 ...* 10 = 70/80


You can multiply the numerator and denominator by any number ( must be the same number), to result in an equivalent expression

What is deviation from mean

Answers

There's mean deviation and standard deviation.

Mean Deviation: The average distance to the mean.

Standard deviation = Square root of variance

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Standard deviation formula:

\sigma =\sqrt { \frac { \Sigma { x }^( 2 ) }{ n } -{ \left( \frac { \Sigma x }{ n }  \right)  }^( 2 ) }
action of departing from an established course or accepted standard.

Answer my question please

Answers

Answer:

4500 feet

Step-by-step explanation:

Unit Conversion used:

            1 yard = 3 feet

Unit multipliers used:

(30 laps)/(1 week)

(25 yards)/(1 lap)

(3 feet)/(1 yard)

The unit multipliers are set up in such a way that when they are multiplied with eachother, the initial unit of “weeks” gets cancelled out and the final answer is assigned the units of  “feet

Total distance he swam during =  (2 weeks) × ((30 laps)/(1 week)) × ((25 yards)/(1 lap)) × ((3 feet)/(1 yard))

  hiswinter break                         = 4500 feet

Which function is the inverse of f(x) = -5x-42

Answers

Answer:

f'(x)=-(x+42)/5

Step-by-step explanation:

Rewrite f(x) as y:

y=-5x-42

Flip x and y and solve for y:

x=-5y-42

x+42=-5y

(x+42)/-5=y

So the inverse function is f'(x)=-(x+42)/5 (note that f' means inverse)

Identify whether each of the following dilations are enlargements or reductions1. (0.2x, 0.2y)
2. (4/5x, 4/5y)
3. (5/4x, 5/4y)
4. (7.5x, 7.5y)

(Please help)

Answers

Answer:

1. The dilation (0.2x, 0.2y) is an enlargement.

When the scale factor of a dilation is greater than 1, it results in an enlargement. In this case, the scale factor is 0.2, which is less than 1. However, the absolute value of the scale factor is greater than 1. Therefore, it is considered an enlargement.

For example, let's consider a point (2, 3). After applying the dilation with a scale factor of 0.2, the new coordinates would be (0.4, 0.6). This shows that the image has been enlarged.

2. The dilation (4/5x, 4/5y) is an enlargement.

Similar to the first dilation, the scale factor in this case is less than 1, but its absolute value is greater than 1. Hence, it is an enlargement.

For instance, if we have a point (5, 6) and apply the dilation with a scale factor of 4/5, the new coordinates would be (4, 4.8). This demonstrates an increase in size.

3. The dilation (5/4x, 5/4y) is also an enlargement.

The scale factor here is greater than 1, which indicates an enlargement.

Let's consider a point (8, 10) and apply the dilation with a scale factor of 5/4. The new coordinates would be (10, 12.5), indicating an increase in size.

4. The dilation (7.5x, 7.5y) is an enlargement.

Once again, the scale factor is greater than 1, confirming that it is an enlargement.

For example, if we have a point (1, 2) and apply the dilation with a scale factor of 7.5, the new coordinates would be (7.5, 15), indicating an increase in size.

In summary, all the given dilations result in enlargements as their scale factors are either greater than 1 or their absolute values are greater than 1.

Step-by-step explanation:

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Answer:

Step-by-step explanation:

How do you subtract an integer from another integer without using a number line or counters? Give an example.

Answers

The General rule for adding and subtracting numbers 
1. Two integers with the same signs
Once 2 integers has the same sign, then just add the numbers.
For example
 
1. 1+1 = 2 
2. 2 + 5 = 7   

2. Two integers with different signs
When 2 integers has different sign, then find the difference
For example
1. 1-1 =0
 
2. 2 – 5 = -3 

3. Two integers that vary in sign
When 2 integers vary in sign, then it will depend who which number carries the largest value
For example
 
1.   
-3 + 2 = -1
 
2.   2 – 1 = 1

Step-by-step explanation:

Additive inverse is the opposite of a number; the sum of additive inverses is zero. An integer and its additive inverse make up a zero pair.

example: 3

integer: -3+3=0

additive inverse: 3-3=0

Hope this helps!

Thanks!