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3 years ago

3(1-2x)=1/4(6x+9) what does x equal? A) x=1/10 B) x=7/10 C) x=-12/7 D)x=-1/5

Mathematics

2 answers:

harina [27]3 years ago

7 0

Answer:

Step-by-step explanation:

3(1-2x)=1/4(6x+9)

3-6x=1 1/2x+2 1/4

-2 1/4 -2 1/4

3/4-6x=1 1/2x

+6x +6x

3/4=7 1/2x

/7 1/2 /7 1/2

1/10=x

dalvyx [7]3 years ago

3 0

Answer:

Step-by-step explanation:

$3\left(1-2x\right)=\frac{1}{4}\left(6x+9\right)\quad:\quad x=\frac{1}{10}\quad\left(\mathrm{Decimal}:\quad x=0.1\right)$

3\left(1-2x\right)=\frac{1}{4}\left(6x+9\right)

$3\left(1-2x\right)$

$\mathrm{Apply\:the\:distributive\:law}:\quad\:a\left(b-c\right)=ab-ac$

$a=3,\:b=1,\:c=2x$

$=3\cdot\:1-3\cdot\:2x$

=3-6x

3-6x=\frac{3}{2}x+\frac{9}{4}

3-6x-3=\frac{3}{2}x+\frac{9}{4}-3

-6x=-\frac{3}{4}+\frac{3}{2}x

-6x-\frac{3}{2}x=-\frac{3}{4}+\frac{3}{2}x-\frac{3}{2}x

-\frac{15}{2}x=-\frac{3}{4}

2\left(-\frac{15}{2}x\right)=2\left(-\frac{3}{4}\right)

-15x=-\frac{3}{2}

\frac{-15x}{-15}=\frac{-\frac{3}{2}}{-15}

x=\frac{1}{10}

Hope I helped

Brainliest plz

Sorry about all this work

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alekssr [168]

Answer:

Step-by-step explanation:

Given

Joaquin's score is $75,72,85,62,58,91$

and Trisha's score is $92,90,55,76,91,74$

Arranging score in order of value we get

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as no of values is even therefore their median is

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3 years ago

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The question is in the picture.

dangina [55]

Let's denote no of seats in first row with r1 , second row with r2.....and so on.

r1=5

Since next row will have 10 additional row each time when we move to next row,

So,

r2=5+10=15

r3=15+10=25

<u>Using the terms r1,r2 and r3 , we can find explicit formula</u>

r1=5=5+0=5+0×10=5+(1-1)×10

r2=15=5+10=5+(2-1)×10

r3=25=5+20=5+(3-1)×10

<u>So for nth row,</u>

rn=5+(n-1)×10

Since 5=r1 and 10=common difference (d)

rn=r1+(n-1)d

Since 'a' is a convention term for 1st term,

which is an explicit formula to find no of seats in any given row.

Using above explicit formula, we can calculate no of seats in 7th row,

r7=5+(7-1)×10

r7=5+(7-1)×10 =5+6×10

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A cube-shaped aquarium has edges that are 3 feet long and is filled with water that has a density of 62 lbs/ft3 Should the aquar

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Given:

There are given the edge of the cube-shaped aquarium has 3 feet.

Explanation:

To find the value, we need to use the volume of the cube formula:

So,

From the formula of volume:

$V=a^3$

Where

a represents the value of edge.

So,

Put the value of edge into the above formula:

Then,

$\begin{gathered} V=a^3 \\ V=3^3 \\ V=27cube\text{ feet} \end{gathered}$

Now,

The water has a density of 62 pounds per cube foot.

According to the question:

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Answer:

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