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Svetlanka [38]
3 years ago
7

Which of these strategies would eliminate a variable in the system of equations? \begin{cases} 6x + 5y = 1 \\\\ 6x - 5y = 7 \end

{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ ​ 6x+5y=1 6x−5y=7 ​
Mathematics
1 answer:
IRISSAK [1]3 years ago
3 0

Answer:

x = 0.667 and y = -0.6

Step-by-step explanation:

Given that,

6x + 5y = 1 ....(1)

6x - 5y = 7 ...(2)

We need to solve the above equations.

Subtract equations (1) and (2)

6x + 5y -(6x - 5y) = 1-7

6x+5y-6x+5y = -6

10y=-6

y = -0.6

Put the value of y in equation (1).

6x + 5(-0.6) = 1

6x = 1-5(-0.6)

6x = 4

x = 0.667

Hence, first step is to subtract equation (1) and (2) then put the value of y in equation (1).

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A certain composite number has 4 factors and the sum of them is 96. Find the number(hint the number is divisible by 7). Just don
ankoles [38]

Answer:

\huge\boxed{77}

Step-by-step explanation:

The number can be divisible by 7.

The multiples of 7 are 7,14,21,28,35,42,49,56,63,70,77,84 and so on

<u>Finding the factors for all of the multiples of 7:</u>

7 => 1,7   [Not 4 factors]

14 => 1,2,7,14    [4 factors but Sum = 24]

21 => 1,3,7,21   [4 factors but Sum = 32]

28 => 1, 2, 4, 7, 14, 28    [Not 4]

35 => 1,5,7,35   [4 factors but Sum = 48]

42 => 1, 2, 3, 6, 7, 14, 21, 42     [Not 4]

49 => 1,7,49   [Not 4]

56 => 1, 2, 4, 7, 8, 14, 28, 56       [Not 4]

63 => 1, 3, 7, 9, 21, 63     [Not 4]

70 => 1, 2, 5, 7, 10, 14, 35, 70    [Not 4]

77 => 1, 7, 11, 77     [4 factors and Sum = 96]

7 0
3 years ago
Read 2 more answers
What is this plz explain
castortr0y [4]

Answer:

Answer as follows...

Step-by-step explanation:

interior angles are 3,4,5,6

exterior angles are 1,2,7,8

vertical angles are 2and3, 1and4, 6and7, 5and8

corresponding angles are 2and6 1and5 3and7 4and8

alternate interior angles are 4and5 3and6

alternate exterior angles are 1and8 2and7

same side interior angles are 3and5 4and6

8 0
4 years ago
Help me please help
Iteru [2.4K]
I am not sure but i think it’s 56•
8 0
3 years ago
NEED HELP!!! graph <br> y&lt;1−3x
vekshin1

A graph and a table are provided below this discussion. You should plot these in this order.

y = 1 - 3x    In red. It might be hard to see

y < 1 - 3x    In blue

The table which is to the left of the graph

The table is constructed by putting a value in for x

x = 2

y = 1 - 3(2)

y = 1 - 6

y = - 5



8 0
4 years ago
What’s the answer?!!!!
mel-nik [20]

Answer: YES

Step-by-step explanation:

<u>Concept</u>

In a right triangle, the square of both legs is equal to the length of hypotenuse squared. This is the Pythagorean theorem: a²+b²=c². For more graphical explanation, please refer to the attachment below.

<u>Given</u>

Leg a = 36 in

Leg b = 48 in

Hypotenuse c = 60 in

<u>Solve</u>

a² + b² = c²

(36)² + (48)² = 3600

(60)² = 3600

3600 = 3600

Therefore, the answer is <u>YES</u>

Hope this helps!! :)

Please let me know if you have any questions

6 0
3 years ago
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