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12345 [234]
3 years ago
13

Someone help me please I don’t get it

Mathematics
1 answer:
rodikova [14]3 years ago
8 0

Answer:

x = \frac{15}{2} , x = 1

Step-by-step explanation:

(a)

\frac{4x-1}{2} = x + 7 ( multiply both sides by 2 to clear the fraction )

4x - 1 = 2x + 14 ( subtract 2x from both sides )

2x - 1 = 14 ( add 1 to both sides )

2x = 15 ( divide both sides by 2 )

x = \frac{15}{2}

(b)

3x + 2 = \frac{2x+13}{3} ( multiply both sides by 3 to clear the fraction )

9x + 6 = 2x + 13 ( subtract 2x from both sides )

7x + 6 = 13 ( subtract 6 from both sides )

7x = 7 ( divide both sides by 7 )

x = 1

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Zen rolled a fair six-sided die 12 times. The table below shows the number of times each number was rolled:
Sunny_sXe [5.5K]
4 was rolled 2 times
5 also 2 times
6 was rolled 4 times
So the result was greater than three eight times out of 12 rolls. 
P=8/12=2/3
8 0
3 years ago
RCX)=2VX SCx) = x(RSX4=
aev [14]

Given the two functions:

\begin{gathered} R(x)=2\sqrt[]{x} \\ S(x)=\sqrt[]{x} \end{gathered}

We need to find (RoS)(4). THis is the functional composition. We take S(x) and put it into R(x) and then put "4" into that composed function. Shown below is the process:

(RoS)(x)=2\sqrt[]{\sqrt[]{x}}

When we plug in "4", into "x", we have:

\begin{gathered} (RoS)(x)=2\sqrt[]{\sqrt[]{x}} \\ (RoS)(4)=2\sqrt[]{\sqrt[]{4}} \\ =2\sqrt[]{2} \end{gathered}

3 0
1 year ago
Chris received $50,000 from his grandparents as a graduation gift. So, he has decided to invest the money
GenaCL600 [577]

Answer: $7142.86

Step-by-step explanation:

Let the amount to be invested in the bond be represented by y.

Based on this, the amount to be invested in the CD will be: = 50000 - y.

From the information given, yearly interest on bond is 12%, this will be:

= 12% × y = 0.12 × y = 0.12y

Also, interest on CD will be:

= 5% × (50000 - y)

= 0.05(50000 - y)

Then, the equation to get the amount to be invested in bond will be:

0.12y + 0.05(50000 - y) = 3000

0.12y + 2500 - 0.05y = 3000

0.12y - 0.05y = 3000 - 2500

0.07y = 500

y = 500/0.07

y = 7142.8571

y = 7142.86

The amount to be invested in bond will be $7142.86

7 0
3 years ago
Can someone help me find the surface area
GaryK [48]
The surface area is 33ft square.
8 0
4 years ago
Guys help i only have 10 more minutes left ;-;
zlopas [31]

Answer:

20

Step-by-step explanation:

12 = 6/10 x

120 = 6x

x = 20

3 0
3 years ago
Read 2 more answers
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