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Mamont248 [21]
3 years ago
12

16. -4x+3x=2 Please help

Mathematics
2 answers:
sertanlavr [38]3 years ago
8 0

Answer:

x=2

Step-by-step explanation:

-4x+3x= 2

x=2

hope it helps

elena-14-01-66 [18.8K]3 years ago
3 0

Answer:

x= -2

-------

7

Step-by-step explanation:

<1. combine like terms.>

<2.divide both sides of the equation by same terms.>

<3.Simplify.>: then Answer while come x= -2

------

7

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ivanzaharov [21]

Answer:

Brianna and Kayla will make the same amount of money after working for 5 hours. Both will make $25.00 by this time.

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4 0
3 years ago
What equation results when you cross - multiply 17/d = 51/21
nekit [7.7K]

Answer:

 51d=357\\\\d=\frac{357}{51} \\\\d=7

Step-by-step explanation:

A proportion is an equation that defines that two ratios are equal.  When the terms of a proportion are cross multiplied, the cross products are equal.  Cross multiplication is the multiplication of the numerator of the first ratio by the denominator of the second ratio and the multiplication of the denominator of the first ratio by the numerator of the second ratio:

\frac{a}{b} =\frac{c}{d} \rightarrow ad=bc

Therefore:

\frac{17}{d} =\frac{51}{21} \\\\17*21=d*51\\\\357=51d\\\\Solving\hspace{3} for\hspace{3} d\\\\d=\frac{357}{51} \\\\d=7

6 0
3 years ago
The population of bacteria in a culture doubles every 14 hours. How long will it take for
Snezhnost [94]

Answer:  22 hours 11 minutes

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

P=P_o\cdot e^{(kt)}\\\\\text{Since the initial population is doubled in 14 hours, then:}\\2P_o=P_o\cdot e^{k\cdot 14}\\2=e^{14k}\\ln\ 2=ln\ e^{14k}\\ln\ 2=14k\\\\\dfrac{ln\ 2}{14}=k\\\\0.0495=k\\\\\\\text{Now that the k-value has been determined, we can find the time when the}\\\text{population is tripled:}\\3P_o=P_o\cdot e^{0.0495t}\\3=e^{0.0495t}\\ln\ 3=ln\ e^{0.0495t}\\ln\ 3=0.0495t\\\\\dfrac{ln\ 3}{0.0495}=5\\\\22.19=t\\\\22\ hrs +0.19\ hrs

22\ hours + \bigg[\dfrac{19}{100}=\dfrac{x}{60}\bigg]\\\\22\ hours + 11\ minutes

4 0
3 years ago
Why is 1 neither a prim number nor a composite number
Otrada [13]

Answer:

it is not a prim number because ONE is not greater than ONE and it is not composite because in that case you can not multiply or divide one by its self

Step-by-step explanation:

in order for a number to be prim you have to have it only be able to be multiplied by one to get the answer but it has to be greater than one. in order for a number to be composite it has to have at least one divisor other than one its self

hope it helps and happy studding

4 0
3 years ago
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If the figure is a polygon, name it by its number of sides.
maxonik [38]

Answer: five sides is the answer:))


Step-by-step explanation:


4 0
3 years ago
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