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Molodets [167]
3 years ago
9

Mitchell solves the following system of equations using the elimination method.

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
7 0
Multiply the first equation by 2 or divide the second one my 2, to get the #X opposites, to cancel each other out

-4x+6y=12
4x-6y=-6

Or

-2x+3y=6
2x-3y=-3

there’s no solution either way
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How many solutions does the following equation have?<br> 2x + 2-3x = 3x - 4
disa [49]
One solution which would be 1.5 or 3/2 same thing
7 0
3 years ago
Ali, Ben, and Cliff plant seedlings in their neighborhood park. Ali plants 40% of the total number of seedlings, Ben plants 45%
Juli2301 [7.4K]

Answer:

580 seedlings altogether.

Step-by-step explanation:

Given that,

Ali plants 40% of the total number of seedlings, Ben plants 45% of the total number of seedlings, and Cliff plants the rest of the seedlings. Cliff plants 87 seedlings.

The percentage of the seedling planted by Cliff = 100% - 45% - 40% = 15%

<em>Let x = the total number of seedlings</em>

<em />15\%\ of\ x=87\\\\x=\dfrac{87\times 100}{15}\\\\x=580

Hence, three boys plant 580 seedlings altogether.

7 0
3 years ago
Explain the difference between f(2) and f(x) = 2. Use a verbal explanation and create examples to make it very clear. Please hel
Firlakuza [10]

Let x be a variable, and f(x) a function of that variable.

f(2) is a <em>number </em>; it's the value of the function f(x) when x = 2, assuming that value exists.

f(x) = 2 is a <em>statement </em>; it says there is some value of x for which the function returns a value of 2. Because it's a statement, it can be true or false.

Here's an example:

Define f(x) = sin(x). Then f(2) = sin(2) ≈ 0.909297.

If x is a real number, then the statement sin(x) = 2 is false, because -1 ≤ sin(x) ≤ 1 for all real x.

If we replace 2 with 1, on the other hand, we get

f(1) = sin(1) ≈ 0.84147

and

sin(x) = 1  ==>  x = π/2 + 2nπ

where n is any integer. (So we're talking about numbers like π/2, -3π/2, 5π/2, -7π/2, and so on.) We're saying here that any real number x of the above form satisfies the equation and makes the statement true.

8 0
3 years ago
X^2 - 4x + 2x – 8 = 2(x + 2)
zhenek [66]

Answer:

x = 6 or x = -2

Step-by-step explanation:

x^{2}  - 4x + 2x - 8 = 2(x + 2)\\x^{2}  - 4x + 2x - 8 = 2x + 4\\x^{2}  - 4x - 12 = 0\\(x-6)(x+2) = 0\\

5 0
3 years ago
Write an equation that passes through (-2,8) and(-4,-4)
____ [38]
Y=6x+20
Use the formula y2-y1/x2-x1. then to fidn the y intercept use the formula y=mx+b and solve for b.
6 0
4 years ago
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