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Juli2301 [7.4K]
3 years ago
9

In the equation 6x â 2 = â4x + 2, spencer claims that the first step is to add 4x to both sides. jeremiah claims that the first

step is to subtract 6x from both sides. who is correct? explain.
Mathematics
1 answer:
snow_tiger [21]3 years ago
7 0

Sample Response: Both are correct. As long as inverse operations and the properties of equality are used properly, both methods will generate the same solution. They both isolate the variable on one side of the equation.

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Pleaseeeeee help I’m so confused
SSSSS [86.1K]

Answer:

4747

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
For a chemistry experiment Laura needs 300 ml of a 15% sulphuric acid solution. The Science Department has quantities of 5% acid
Len [333]

Answer:

100 ml of 5% solution

200 ml of  20% solution

Step-by-step explanation:

x = amount of 5% solution

y = amount of 20% solution

System of equations:

x + y = 300

.05x + .20y = 300(.15)

Solve by substitution:  let y = 300 - x

.05x + .2(300-x) = 300(.15)

.05x + 60 - .20x = 45

-.15x = -15

x = 100, therefore y = 200

7 0
3 years ago
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What is the solution of the linear system?
lozanna [386]

Answer:

(3,-4)

Step-by-step explanation:

Given

-7x - 2y = -13

x = 2y + 11

Required

Find the solution

Substitute 2y + 11 for x in the first equation

-7(2y + 11) - 2y = -13

Open bracket

-14y -77 - 2y = -13

Collect Like Terms

-14y - 2y = -13+77

-16y = 64

Solve for y

y = \frac{64}{-16}

y = -4

Substitute -4 for y in x = 2y + 11

x = 2(-4) + 11

x = -8 +11

x = 3

Hence, the solution is (3,-4)

8 0
3 years ago
Diana works in a building that is 130 feet tall. She is outside, looking up at the building at an angle of 37° from her feet to
GarryVolchara [31]
She is 17.6 feet closer

8 0
3 years ago
What is the value of this expression if h<br> = 8,j = -1, and k<br> =<br> -12
Rashid [163]

Answer:

12

Step-by-step explanation:

The given expression is :

\dfrac{j^3k}{h^0}

We need to find the value of this expression when h = 8, j = -1 and k = -12.

Put all the values in the given expression.

\dfrac{j^3k}{h^0}\\\\=\dfrac{(-1)^3\times (-12)}{(8)^0}\\\\=\dfrac{-1\times -12}{1}\\\\=12

So, the value of the given expression is 12.

7 0
3 years ago
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