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vodomira [7]
3 years ago
12

For prime numbers :

Mathematics
2 answers:
ch4aika [34]3 years ago
7 0
37 because 3+7=10
and 37 is prime
Fudgin [204]3 years ago
5 0
The answer is 73 because that is the only prime number that digits equal 100
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Someone can help me with this please​
Marina CMI [18]

Answer:

x = -1 and x = 7

Step-by-step explanation:

2x^2 + 2x - 14x - 14

2x^2 - 12x -14

Divide through by 2 to simplify the expression

x^2 - 6x - 7

x^2 - 6x -7

Now, let's think of two numbers that when added up gives -6 and when multiplied gives -7

Yes! It's -7 and +1

-7 + 1 = -6 , and -7* 1 = -7

Now, lets substitute these numbers in the expression

x^2 -7x + x - 7

factorize

x(x - 7) + 1(x - 7)

(x + 1) (x - 7)

Now equate to zero

(x + 1) (x - 7) = 0

x + 1 = 0

subtract 1 from both sides

x +1 - 1 = 0 -1

x = -1

Also,

x - 7 = 0

Add 7 to both sides

x -7 + 7 = 0 + 7

x = 7

Hence, x = -1 and x =7

6 0
3 years ago
Please please help me please help please please help me please help please
AVprozaik [17]

Answer:

Perimeter is 17.07

Step-by-step explanation:

We know that DF = EF = 5 cm, since D and E are the midpoints of AC and AB, both of which are 10 cm in length.

We need to use the Pythagorean theorem to get the length of DE.

DE = \sqrt{5^{2} +5^{2}}=\sqrt{50}  = 7.07\\

So the perimeter of DEF is 5 + 5 + 7.07 = 17.07

5 0
3 years ago
Evaluate the expression when a= 2 and c=-4.<br> -a +5c
-Dominant- [34]
The answer would be 18
4 0
3 years ago
Carloshas1.2 meters of wood if cut into 3 equal pieces how many mm each
sdas [7]
1.2 ÷ 3 = 0.4 meters each 
0.4 meters = 40 cm 
40 cm = 400 mm 

therefore, 
Carlos must cut each piece of wood 400 mm each. 

Hope this helps and have a great day! :D

5 0
3 years ago
Camille shaded 12/25 of a model. Write the decimal that represents the shaded portion of the model.
deff fn [24]

Answer: 12/25 is 0.48

because 12 divided into 25 equals 0.48

Step-by-step explanation:I’m sorry if I answered it too late

7 0
3 years ago
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