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4 years ago

Look at this expression.

Mathematics

1 answer:

g100num [7]4 years ago

4 0

Multiply x and 3

Multiply x and 1

The x just gets copied along.

The answer is x

3*x evaluates to 3x

Because of the minus sign

3x becomes - 3x

The answer is -3x

Multiply y and 2

Multiply y and 1

The y just gets copied along.

The answer is y

2*y evaluates to 2y

-3*x-2*y evaluates to -3x-2y

The answer is -3x-2y-2

-3*x-2*y-2 evaluates to -3x-2y-2

so the first one is right

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4. A diagonal divides a square patch of garden that is

jeyben [28]

The answer is radical 8 please see my handwritten steps

5 0

3 years ago

Write the triangle congruence statement and the congruence theorem that proves the triangles congruent. If fhe triangles are bot

Nezavi [6.7K]

Answer:

SSA

Step-by-step explanation:

4 0

3 years ago

This week laptops are 25% off.if a laptop cost $360 what it's sell price

mihalych1998 [28]

Answer:

$270

Step-by-step explanation:

You can do this:

$360*0.75

8 0

4 years ago

Which measure best represents the spread of the data shown below and what is its value? 10, 9, 8, 30, 7, 8, 9, 6, 7, 11

kenny6666 [7]

Lets put the numbers in order...
6,7,7,8,8,9,9,10,11,30

Q1 = 7
Q2 = (8 + 9) / 2 = 17/2 = 8.5
Q3 = 10
IQR = Q3 - Q1 = 10 - 7 = 3 <== so the interquartile range is 3

mean absolute deviation...
the mean of our data is 10.5

now we subtract the mean from every data point....and find its absolute value

6 - 10.5 = -4.5.....| -4.5| = 4.5
7 - 10.5 = -3.5.....| -3.5| = 3.5
7 - 10.5 = -3.5.....|-3.5| = 3.5
8 - 10.5 = - 2.5....|-2.5| = 2.5
8 - 10.5 = -2.5....|-2.5| = 2.5
9 - 10.5 = -1.5....|-1.5| = 1.5
9 - 10.5 = -1.5....|-1.5| = 1.5
10 - 10.5 = -0.5..| -0.5| = 0.5
11 - 10.5 = 0.5...|0.5| = 0.5
30 - 10.5 = 19.5..|19.5| = 19.5

now we take the average of these numbers
(4.5+3.5+3.5+2.5+2.5+1.5 + 1.5 + 0.5+0.5+19.5) / 10 =
40/10 = 4 <== ur mean absolute deviation

In summary :
ur interquartie range (IQR) of ur data set is 3
ur mean absolute deviation (MAD) of ur data set is 4

4 0

3 years ago

Mr.Jackson bought 1 3/5 lb.of beef. He cooked 3/4 of it for lunch. How much does he have left

Luda [366]

===> Mr. Jackson bought / . of beef:

===> He cooked / of it for lunch:

Solution ===> Mr Jackson, had 2 / 5 Lbs. left

===> If he cooked / of it for lunch:

===> Mr Jackson, had / of the original amount left.

===> Since ( / )( / )

===> / * /

===> /

Mr Jackson, had / . left.

write the answer as one expression; Then Solve:

( / )( − / )

8 / 5 ( 1 - 3 / 4 )

= 8 / 5 ( 1 / 4 )

= 2 / 5 ( Decimal: 2 / 5 ====> 0.4 )

Answer, 2 / 5 Lbs.; of beef, Mr Jackson, Had left.

Hope that helps!!!!! : )

Hope that Helps!!!! : )

7 0

3 years ago