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zhuklara [117]
3 years ago
8

2) The sum of 5x and 2x is at least 14

Mathematics
2 answers:
Semmy [17]3 years ago
6 0

Answer:

b

Step-by-step explanation:

if it is less than 14 then the big side of the arrow would be facing the 14

lina2011 [118]3 years ago
5 0

Answer:

Step-by-step explanation:

5x + 2x > 14= x>2

5x + 2x < 14= x<2

5x + 2x ≤ 14= x≤2

5x + 2x ≥ 14= x≥2

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Simplify completely x^2+4x-45 / x^2+10x+9
S_A_V [24]

Answer: x - 5/x + 1

Step-by-step explanation:

This algebraic fraction

The task to be performed here is factorisation and simplification. Now going by the question,

x² + 4x - 45/x² + 10x + 9, the factorisation of

x² + 4x - 45 = x² + 9x - 5x - 45

= x(x + 9 ) - 5(x + 9 )

= ( x + 9 )(x - 5 ), don't forget this is the algebraic fraction's Numerator

The second part

x² + 10x + 9 = x² + x + 9x + 9

= x(x + 1) + 9( x + 1 )

= ( x + 9 )( x + 1 ), this is the algebraic denominator.

Now place the second expression which is the denominator under the first expression which is the numerator.

( x + 9 )( x - 5 )/( x + 9 )( x + 1 ).

You can see that, ( x + 9 )/( x + 9 ) divide each other , therefore therr then cancelled and left with

x - 5/x + 1

4 0
3 years ago
A river has a current of 2km per hour. Find the rate of Fred’s boat in still water if it travels 30 km downstream and the same t
ratelena [41]

Answer:

32km

Step-by-step explanation:

8 0
3 years ago
911 x 65 what is 911 x 65 not just the answer the work to
alexandr402 [8]

Answer:

Step-by-step explanation:

911

<u>x65</u>

5x1=5

5x10=50

5x900=4500

60x1=60

60x10=600

60x900=54000

5+50+4500+60+600+54000=59,215

6 0
3 years ago
Read 2 more answers
Rearrange a (q-c)=d to make q the subject
Andrej [43]
To rearrange you must first simplify
aq-ac=d  
add ac to each side:
aq=d+ac
then divide by a:
q=(d/a)+c and this is your answer
3 0
3 years ago
I need help with this please
Savatey [412]

Answer:

t = \frac{D-M}{Mr}

Step-by-step explanation:

Given

D = M + Mrt ( subtract M from both sides )

D - M = Mrt ( divide both sides by Mr )

\frac{D-M}{Mr} = t

7 0
3 years ago
Read 2 more answers
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