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cestrela7 [59]
3 years ago
7

Please answer this correctly

Mathematics
1 answer:
timurjin [86]3 years ago
4 0
I do not answer for you but I could help!
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Higher Order Thinking.
defon
Pat has 4 more cards than Frank. Hope that helps! :) 
7 0
3 years ago
What two numbers have a product of -2 and a sum of 7
Citrus2011 [14]

<em>Greetings from Brasil...</em>

According to the statement of the question, we can assemble the following system of equation:

X · Y = - 2      i

X + Y = 7       ii

isolating X from i and replacing in ii:

X · Y = - 2

X = - 2/Y

X + Y = 7

(- 2/Y) + Y = 7     <em>multiplying everything by Y</em>

(- 2Y/Y) + Y·Y = 7·Y

- 2 + Y² = 7X     <em> rearranging everything</em>

Y² - 7X - 2 = 0      <em>2nd degree equation</em>

Δ = b² - 4·a·c

Δ = (- 7)² - 4·1·(- 2)

Δ = 49 + 8

Δ = 57

X = (- b ± √Δ)/2a

X' = (- (- 7) ± √57)/2·1

X' = (7 + √57)/2

X' = (7 - √57)/2

So, the numbers are:

<h2>(7 + √57)/2</h2>

and

<h2>(7 - √57)/2</h2>
7 0
3 years ago
Find the sum and express it in simplest form. (3a^2 + 2a) + (5a^-a -7) ​
fredd [130]

Answer:

8a^2+a-7

Step-by-step explanation:

7 0
3 years ago
Which expressions are equivalent to 15.8×300?
Travka [436]

Answer:

A and C

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
hellllllllllllllllllllpppppppppppppp
timama [110]

Answer:

C

Step-by-step explanation:

(4/3)/(2/5) =(1/x)

(4/3x) = 2/5

x = (2/5)(3/4)

x= 6/20 or 3/10

7 0
2 years ago
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