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Oxana [17]
3 years ago
8

1) 9f - 2 - 8f 2) -8 (-2-5z) + 7 3) 8r - r 4) 2-8k-6k 5) (-2r-6) 6) b+8b

Mathematics
2 answers:
Shalnov [3]3 years ago
6 0
1) f-2
2)23+40z
3)7r
4)2-14k
5)-2r-6
6)9b
kipiarov [429]3 years ago
6 0
1) subtract 9f and -8f = f - 2

2) factor 8 with the numbers in the parenthesis and then sum 7 with 16
16 + 40z + 7 = 23
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The square with side length 2 cm is dilated by a scale factor of 7/3 is the dilated image larger or smaller than the original im
qwelly [4]
Length of square side= 2 cm
Dilation factor= 7/3
Simplify 7/3= 2.33
Apply the dilation factor:
Length of side= 2.33 x 2 = 4.67 cm
As the length of the side of the square is increased in length, which means the dilated image is larger than the original image.

Answer: Larger than then original. 
8 0
3 years ago
A bag contains 7 blue marbles and 7 green marbles. Which shows the likelihood of choosing a blue marble?
satela [25.4K]
Not 100 %  but I would think as likely as not because you have the same amount of both.  1/2 the chance
8 0
4 years ago
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The sum of two consecutive odd integers is at most 166. What are the greatest consecutive odd integers?
bagirrra123 [75]
. x + (x + 2)≤166
. 2x+2≤166
. x≤83 - 1
. x≤82
. x=81
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4 0
4 years ago
A mistake was made in mixing the lemonade—<br> PLEASE HELP!!
beks73 [17]

Answer:

Part A:

4 + x = y

0.5*4 + 1*x = 0.7*y

x = 8/3\ quarts\ of\ 100\%\ solution

y = 20/3\ quarts\ of\ 70\%\ solution

Part B:

x + y = 10

2x + 3y = 23

x = 7 and y = 3

Step-by-step explanation:

Part A:

The inicial concentration of the lemonade is 50%, and the volume is 4 quarts, and we will add x quarts of a lemonade with a concentration of 100%, so the total volume will be y, and the concentration will be 0.7, so we have that:

4 + x = y

0.5*4 + 1*x = 0.7*y

Using the value of y from the first equation in the second one, we have:

2 + x = 0.7*(4 + x)

2 + x = 2.8 + 0.7x

0.3x = 0.8

x = 8/3\ quarts

y = 4 + 8/3 = 20/3\ quarts

Part B:

If he shoots a total of ten targets, we can write the equation:

x + y = 10

Each stationary target is 2 points, and each moving target is 3 points, so if the total points is 23, we have:

2x + 3y = 23

If we subtract the second equation by two times the first one, we have:

2x + 3y - 2*(x + y) = 23 - 2*10

2x + 3y - 2x - 2y = 23 - 20

y = 3

x + 3 = 10 ⇒ x = 7

4 0
3 years ago
Simplify: 2 (5 + 3x) + (x + 10)
IgorLugansk [536]
10 + 15x + x + 10
= 16x + 20
6 0
3 years ago
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