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labwork [276]
3 years ago
12

Determine if the following system of equations has no solutions, infinitely many

Mathematics
1 answer:
Lesechka [4]3 years ago
7 0

Step-by-step explanation:

  • 5x+6=1

5x=1-6

5x=-5

<h3> x=-1</h3>
  • x=-1 in -5x-8y=2

-5(-1)-8y=2

5-8y=2

-8y =2-5

-8y=-3

<h3> y=3/8</h3>
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-5y = -5
Vsevolod [243]

-5y = -5 = 1

7x + 6y = 7

=-1.167

your answer is B) no

4 0
4 years ago
1. Determine whether the regular hexagon has reflection symmetry, rotation symmetry, both, or neither. If it has reflection symm
lana [24]
The regular hexagon has both reflection symmetry and rotation symmetry.

Reflection symmetry is present when a figure has one or more lines of symmetry. A regular hexagon has 6 lines of symmetry. It has a 6-fold rotation axis.

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Rotation symmetry is present when a figure can be rotated (less than 360°) and still look the same as before it was rotated. The center of rotation is a point a figure is rotated around such that the rotation symmetry holds. A regular hexagon can be rotated 6 times at an angle of 60°

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3 0
4 years ago
Some number was divided into 42. This quotient was then multiplied by 8,after which the resulting product was added to 10. Given
AURORKA [14]

Answer:

126

Step-by-step explanation:

In order to find the initial number, we need to create the expression that is being mentioned and solve for the initial value by applying the opposite expressions to isolate the variable.

(((x / 42) * 8) + 10) = 34   ... subtract 10 from both sides

((x / 42) * 8) = 24 ... divide both sides by 8

(x / 42) = 3  ... multiply both sides by 42

x = 126

Finally, we can see that the initial value was 126

5 0
3 years ago
Which pair of numbers is relatively prime
Anna007 [38]
Without any calculations it's evident it can't be neither B (both numbers are even, so they're divisible by 2) nor C (the numbers end in 0 and 5, so they're divisible by 5).

A.
57=3\cdot19\\&#10;96=2^5\cdot3
Both numbers have a factor of 3, so they're not relatively prime.
That means it must be D. But, let's check it.

143=11\cdot13\\&#10;323=17\cdot19

Indeed, those two numbers are relatively prime.

5 0
3 years ago
Read 2 more answers
There are 10 marbles in a bag 1/5 are red and the others are blue. what is the ratio of red to blue?
Pachacha [2.7K]

Answer:

the ratio of red 2/10

easy I think it's not hard

there is tow red balls and 8 blue balls

3 0
3 years ago
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