3 years ago

Use the system of equations to answer the questions below. 4x+2y=-8 2x+y=4

1 answer:

5 0

Answer: Both the equation are not equal. The first equation is equal to (0, 4) and (2, 0) The second equation is equal to (0, -0.5) and (-0.25, 0)

Step-by-step explanation:

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Suppose y varies directly with x, and y= 7 when x = 3. What is the value of x when y = 28? If 7 = k(3) then 28 = k(x) Find x

Rama09 [41]

Let y and x be the numbers that varies directly (that means they keep the same proportion)

Then we have 7y = 3x, OR y/x =7/3 (this ratio should be kept for any value of x and y:
y/x = 7/3, if y = 28, then 28/x = 7/3 or x = (3)(28)/7 = 12

SO X = 12

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3 years ago

2 (3x+1)=17-3 (x-17)

elena-14-01-66 [18.8K]

<h2>Answer:</h2>

$x = \frac{22}{3}$

<h3>alternative form:</h3>

$x = 7 \frac{1}{3} \: or \: x = 7.33333333333$

<h2>Step-by-step explanation:</h2>

$2(3x + 1) = 17 - 3( x - 17) \\ distribute \\ \\ 6x + 2 = 17 - 3x + 51 \\ add \: 3x \: from \: both \: sides \\ \\ 9x + 2 = 17 + 51 \\ add \: 17 \: to \: 51 \\ \\ 9x + 2 = 68 \\ subtract \: 2 \: from \: both \: sides \\ \\ 9x = 66 \\ divide \: both \: sides \: by \: 9 \\ \\ x = \frac{22}{3}$

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4 years ago

Adia is making banners from a roll that is 4.05 meters long she will cut the paper into 3 equal lengths she uses base ten blocks

almond37 [142]

Divide the numbers but 70 has 2 numbers so take the decimal point and move it 2 spaces over and then divide

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3 years ago

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Find the approximate volume of the cylinder shown in the diagram.

balu736 [363]

Answer: D

Step-by-step explanation:

trust me

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4 years ago

What is the value of i^97 - i

Vesna [10]

Answer:

Step-by-step explanation:

i^1 = i

i^2 = - 1

i^3 = i^2 * i = - 1

i^4 = i^2 * i^2 = -1 * -1 = 1

Now the circle just repeats itself. So what you do is find out the remainder of i^97 which you divide by 4. What you get is 24 with a remainder of 1.

So i^97 = i

i - i = 0

The answer is 0

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3 years ago