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dolphi86 [110]
3 years ago
10

4 + 2/7x = 8 what does x equal

Mathematics
2 answers:
frozen [14]3 years ago
8 0
Subtract 4 from both sides of the equation
you will end up with 2/7x=4
next multiply 7x by both sides
you will end up with 2=28x
next divide 28 from both sides
you will end up with x=1/14 in
fraction form. Hope this helps.
Eduardwww [97]3 years ago
5 0
4+2/7x=8
minus 4 from both sides
2/7x=4

now there are 2 paths possible
1. 2/(7x)=4, if so, go to AAAAAA
2. (2/7)x=4, if so, go to BBBBBB


AAAA
2/(7x)=4
times both sides by 7x
2=28x
divide both sides by 28
1/14=x

BBBBBBB
(2/7)x=4
times both sides by 7/2
x=28/2
x=14


x=1/14 or 14 depending on how the fraction is
1/14 if 2/(7x), 14 if (2/7)x
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Which of the following lines are perpendicular to the line y= 3/4x - 8? select all that apply
frez [133]
The answers are b and c
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Jonathan replaced the original factory tires (P220/65 R 18) on his pickup truck with (P255/60 R 17) tires. Calculate the circumf
svet-max [94.6K]

Answer:

92 inches

Step-by-step explanation:

When a tire's size = P220/65 R 18, it means that:

  • the rim is 18 inches wide (or 457 millimeters)
  • the width of the tire is 8.7 inches (or 220 millimeters)
  • the sidewall of the tire is 5.65 inches (or 144 millimeters)
  • the 65 shows the relationship between tire width and sidewall (65%)

the total diameter of the tire = 5.65 + 18 + 5.65 = 29.3 inches

the circumference = 2 x π x radius   or   diameter x π = 29.3 x 3.141592 = 92 inches

3 0
3 years ago
Read 2 more answers
X+(-3)=-7 Solve the equation and enter the value of x below
Phoenix [80]

Answer:

x=-4

Step-by-step explanation:

x+(-3)=-7

x-3=-7

x=-7+3=3-7

x=-4

3 0
3 years ago
Read 2 more answers
Help me with this question ASAP
makkiz [27]

11. D. $5.50

12. B. $21.35

5 0
3 years ago
Nicolas has $6,500 to deposit into an account which earns 3.25% interest compounded annually. How interest will he have earned a
agasfer [191]

We have been given that Nicolas has $6,500 to deposit into an account which earns 3.25% interest compounded annually. We are asked to find amount of interest earned at the end on 8 years.

We will use compound interest formula to solve our given problem.

A=P(1+\frac{r}{n})^{nt}, where,

A = Final amount,

P = Principal amount,

r = Annual interest rate in decimal form,

n = Number of times interest is compounded per year,

t = Time in years.

3.25\%=\frac{3.25}{100}=0.0325

A=6500(1+\frac{0.0325}{1})^{1\cdot 8}

A=6500(1+0.0325)^{8}

A=6500(1.0325)^{8}

A=6500(1.2915775352963673)

A=8395.253979

Now we will subtract principal amount from final amount to find amount of interest as:

\text{interest}=8395.253979-6500

\text{interest}=1895.253979\approx 1895.25

Therefore, Nicolas would have earned $1895.25 in interest at the end of 8 years.

7 0
3 years ago
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