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Digiron [165]
3 years ago
7

A rectangle has an area of (x - 17x + 72) square units. Since the area of a rectangle is determined using the formula, A =

Mathematics
1 answer:
Schach [20]3 years ago
5 0

Answer:

Step-by-step explanation:

x² - 17x + 72 = 0

Sum = -17

Product  = 72

Factor = 8 , 9

x² - 17x + 72 = 0

x² - 8x -9x + (-8)*(-9) = 0

x(x - 8) -9(x -8) = 0

(x - 8 ) (x - 9) = 0

Length = (x - 8) units

Width = (x - 9) units

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A group of 86 people consist of men women and children. There are twice as many women then there are men. There are 6 more child
weqwewe [10]

Answer: 16 men

32 women

38 children

Step-by-step explanation:

Let x represent the number of men in the group.

Let y represent the number if women in the group.

Let z represent the number of children in the group.

A group of 86 people consist of men women and children. This means that

x + y + z = 86 - - - - - - - - - - - - 1

There are twice as many women than there are men. It means that

x = y/2

There are 6 more children than there are women. This means that

z = y + 6

Substituting x = y/2 and z = y + 6 into equation 1, it becomes

y/2 + y + y + 6 = 86

multiplying through by 2, it becomes

y + 2y + 2y + 12 = 172

5y = 172 - 12 = 160

y = 160/5 = 32

x = y/2 = 32/2

x = 16

z = y + 6 = 32 + 6

z = 38

8 0
3 years ago
Last year, Dale mowed the lawn in 45 min. This year, it took Dale 38 min to mow the lawn. What is the percent of decrease in mow
klasskru [66]
45-38= 7min decrease
(7/45)* 100=15.5%
3 0
3 years ago
If Y +Y + 40 = 180 in an isosceles triangle so Y =?
Art [367]

If Y +Y + 40 = 180 in an isosceles triangle so Y =?

Answer:

b) 70

Step-by-step explanation:

Y + Y + 40 = 180

2y + 40 = 180

2y = 180 - 40

2y = 140

y = 140/2

y = <u>7</u><u>0</u>

So, the value of Y is 70 (b)

#CMIIW ^^

4 0
3 years ago
Read 2 more answers
Find the value of y. this is dud tdy help plss
spin [16.1K]

Answer:

y is B. 82 degrees (and for extra, x is 54 degrees)

Step-by-step explanation:

The angles shown are complementary, which means they equal 180 degrees. Subtract 73 from 180 to get 107 degrees for the other angle in this set. After that subtract 25 from 107 to get y, which is 82 degrees.

(For x, just subtract 19 from 73 to get 54 degrees.)

4 0
2 years ago
A game require rolling a six sided die numbered fro 1 to 6. What is the probability of rolling a 1 or a 2?
Virty [35]

Answer:

1/3

Step-by-step explanation:

hello,

probability of 1 = 1/6

probability of 2 = 1/6

probability of 1 or 2 = 1/6+1/6 as probability of 1 and 2 = 0

so the answer is 2/6=1/3

8 0
3 years ago
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