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Aleks [24]
3 years ago
6

The equation 4(x – 3)2 – 5 = 139 has two solutions: one positive and one negative. What is the

Mathematics
1 answer:
AlekseyPX3 years ago
3 0

Answer:

Step-by-step explanation:

4(x-3)2-5 = 139

(4x-12)-5=139

-20x + 60 = 139

-20x +60 - (60) = 139- 60

-20x = 79 divide both sides by -20

x = -3.95

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One number is 6 less than 5 times the other number. Their sum is 60. Find the numbers.
OLEGan [10]

Answer:

The numbers are 11 and 49.

Step-by-step explanation:

<em>x = 5y - 6 </em> This is just the first sentence written as an equation.

<em>x + y = 60</em> This is just the second sentence written as an equation.

<em>5y - 6 + y = 60</em> Substitute x for what you know it is equal to

<em>6y - 6 = 60</em> Collect like terms

<em>6y = 66</em> Add 6 to each side

<em>y = 11</em> Divide each side by 6

<em>x = 5 × 11 - 6 </em> Substitute y for what you know it is

<em>x = 55 - 6</em> Simplify by working out 5 × 11 = 55

<em>x = 49</em> Subtract 6 from 55 to get 49

8 0
3 years ago
A map has a scale of 2 inches = 15 miles.If two towns are 7 inches apart on the map,how far apart are they actually
seraphim [82]
1.) set up a w_k_u chart
2.) in the w column write in on top and mi in the bottom like this
w_K_U
in_
mi_
then in the k column write 2 for in and 15 for mi
W_K_U
in_2_
mi_15_
then in the U column, you write 7 for in and x for mi
W_K_U
in_2_7
mi_15_x
then cross multiply:  2x = 15(7)
multiply 15 times 7 which is 105
2x=105
divide 2x by 2
x=105 
answer 105

3 0
3 years ago
Read 2 more answers
In a sale, a clothes shop reduces its prices by 30%.
ipn [44]

Answer:

$16.80

Step-by-step explanation:

30% of 24 and the answer is subtracted from $24

8 0
2 years ago
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a single die is rolled one time. Find the probability of rolling a number greater than 4 or less than 3​
MaRussiya [10]

Answer:

less then 3

Step-by-step explanation:

8 0
3 years ago
Running at their respective constant rates, Machine X takes 2 days longer to produce w widgets than Machine Y. At these rates, i
Doss [256]
C. Hope this helps :)
5 0
3 years ago
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