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Elena-2011 [213]
3 years ago
11

Helpppppp meeeeeeeeee

Mathematics
2 answers:
zhenek [66]3 years ago
7 0
1.5 not that hard but hope it helps
Law Incorporation [45]3 years ago
3 0

Answer:

The temperature needs to rise <u>1.5</u> degree C to reach 0 degree C.

Step-by-step explanation:

-1.5+<u>1.5</u>=0

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Solve x²+5x+6=0 by completing the square​
Brums [2.3K]

Answer:

x = -2

x= -3

Step-by-step explanation:

x 2+5x+6=0

To solve the equation, factor x^2+5x+6 using formula x^2+(a+b)x+ab=(x+a)(x+b). To find a and b, set up a system to be solved.

a+b=5

ab=6

Since ab is positive, a and b have the same sign. Since a+b is positive, a and b are both positive. List all such integer pairs that give product 6.

1,6

2,3

Calculate the sum for each pair.

1+6=7

2+3=5

The solution is the pair that gives sum 5.

a=2

b=3

Rewrite factored expression (x+a)(x+b) using the obtained values.

(x+2)(x+3)

To find equation solutions, solve x+2=0 and x+3=0.

x=−2

x=−3

4 0
3 years ago
Element x decays radioactively with a half life of 8 minutes. If there are 530 g of element x, how long, to the nearest tenth of
enot [183]

Answer:49.9

Step-by-step explanation:

3 0
3 years ago
Simplify completely ((x2-4x+4)/(x2+10x+25)) x ((x+5)/(x2+3x-10)) ...?
vladimir1956 [14]
Hope I wrote this clearly

3 0
3 years ago
What is the value of this expression when<br> d= 47 and f = 3?<br> 6 (d - f) +f
agasfer [191]

Answer:

267

Step-by-step explanation:

We are given the expression:  6 (d - f) +f

The value of the expression when d= 47 and f = 3 is :

6 (47 - 3) +3 = 6×(44) + 3 = 264 + 3 = 267

=267

7 0
2 years ago
Solve the compound inequality 6b &lt; 42 or 4b + 12 &gt; 8.
sukhopar [10]

Step-by-step explanation:

6b < 42 or 4b + 12 > 8

6b < 42

= 6b/6 < 42/6

= b < 7

4b + 12 > 8

=4b - 12 + 12 < -12+8

= 4b > - 12 + 8

= 4b > -4

= 4b/4 = -4/4

b > -1

so

7 > b > -1

7 0
3 years ago
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