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3 years ago

What is 2 (3x+7) = 4

Mathematics

2 answers:

KIM [24]3 years ago

7 0

Answer:

x = -5/3

Step-by-step explanation:

2(3x+7) = 4

6x + 14 = 4

Subtract 14 from both sides,

6x = 4-14

6x = -10

Divide by 6 on both sides,

x = -10/6 = -5/3

Nataly_w [17]3 years ago

7 0

Answer:

x = -6/10

Step-by-step explanation:

First distribute so you get 6 x + 14 = 4

Then subtract by 14 so you get 6 x = -10

And divide by 6 to get x = - 6/10

2 (3x+7) = 4

6 x + 14 = 4

6 x = -10

x = -6/10

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Which equation has no solution A.) 4(x+3)+2x=6(x+2) B.) 5+2(3+2x)=x+3(x+1) C.) 5(x+3)+x=4(x+3)+3 D.) 4+6(2+x)=2(3x+8)

Savatey [412]

Answer:

B. 5+2(3+2x)=x+3(x+1)

Step-by-step explanation:

Expand the brackets.

5 + 6 + 4x = x + 3x + 3

11 + 4x = 4x + 3

Add -4x and -11 on both sides.

4x - 4x = 3 - 11

0 = -8

There are no solutions.

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3 years ago

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natka813 [3]

Answer:

B and D

Step-by-step explanation:

A simplifies to a linear equation

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4 years ago

Which subtraction expression does the number line model show?

Zigmanuir [339]

The subtraction expression shows C. -4-9

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3 years ago

What is 70/3? *Please do not put the answer as a run-on decimal, thanks!*

VladimirAG [237]

Answer:

the answer is 23 1/3 or 23 and 1/3 or 23.3 with repeating decimal

Step-by-step explanation:

first find the number that 3 multiplied by a number equals closest to say 70 so 69 leaving 1 amd you use your denominator you divided by and you would have 1/3

6 0

2 years ago

Read 2 more answers

a manufacturer has determined that if his company sells x items per day then their profit is given by P=-x^2+ 700 x-10000 euros.

Radda [10]

Answer:

Step-by-step explanation:

To find the minimum amount of items, x, that need to be sold for the manufacturer to make a profit, we can use the quadratic formula

$x = \frac{-b+\sqrt{b^{2}-4ac } }{2a}; x= \frac{-b-\sqrt{b^{2}-4ac } }{2a}$

$x= \frac{-700+\sqrt{700^{2}-4(a)(-10000) } }{2(1)}; x= \frac{-700-\sqrt{700^{2}-4(a)(-10000) } }{2(1)}$

$x= \frac{-700+\sqrt{530000} }{2}; x= \frac{-700-\sqrt{530000} }{2}$

$x=\frac{-700+100\sqrt{53} }{2}; x=\frac{-700-100\sqrt{53} }{2};$

$x=-350 + 50\sqrt53 = 14.005; x = -350 - 50\sqrt53 = -714.005$

In context of the problem, we can only rely on the positive value, as the negative value would lead to a loss of profit.

$(-714.005)^2+700(-714.005)-10000=-0.360$

Furthermore, we must round to the nearest whole number, as you cannot make part of an item.

Lastly, if you were to plug in 14 into the equation for Profit, you would still have a negative number (i.e. a negative profit), thus requiring the manufacturer to make no less than 15 items to make a profit:

$(14)^2+700(14)-10000=-4\\\\(15)^2+700(15)-10000=725$

3 0

2 years ago