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inn [45]
2 years ago
5

7 = x/9 x =___ help

Mathematics
2 answers:
Mandarinka [93]2 years ago
8 0
X = 63 I think lol..
hoa [83]2 years ago
5 0

Answer:

x = 63

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable. (Also sorry I'm answering all these questions these are just some of my favorite math problems lol.)

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Linear relations are not functions when they appear graphically as:
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4 0
3 years ago
Solve the following proportion for u.<br> 17/13=u/4
icang [17]

Answer:

u=5.23

Step-by-step explanation:

\frac{17}{13} =\frac{u}{4}\\13u=68~by~cross-multiplication\\u=5.23~rounded~to~the~nearest~hundreds

5 0
3 years ago
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:

15

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
Simplify 10(N + 3).<br><br> 10N + 30<br> 10N + 13<br> 10N + 3
In-s [12.5K]
10(N + 3)

= 10N + 30

Hence, the answer is A.
3 0
3 years ago
Read 2 more answers
These box plots show daily low temperatures for a sample of days in two
lara [203]

Answer:

d

Step-by-step explanation:

7 0
3 years ago
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