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3 years ago

What is 350 enlarged by 20% equal to?

Mathematics

2 answers:

xxMikexx [17]3 years ago

5 0

Answer:

350×20%=

350×1.2=420

Ira Lisetskai [31]3 years ago

4 0

Answer:

420

Step-by-step explanation:

The first step is to convert 20% to decimal form. 20%=20/100=0.2. Now, you can multiply this by 350 to get 70. Adding this to the original value of 350, you get 350+70=420. Hope this helps!

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A car is worth $50,000 brand new and it will loose 10% of its value each year

notka56 [123]

We can set this geometric sequence up as so:

y = 50,000(0.90)^(x - 1)

The value of the car is represented by y, and the year is represented by x.

6 0

3 years ago

Please help!!!!!

vampirchik [111]

Answer:

Step-by-step explanation:

Consider the quadratic equation, we have

$ax^2+bx+c=0$

Dividing the equation by a, we get

$x^2+\frac{b}{a}x+\frac{c}{a}=0$

Put $\frac{c}{a}$ on the other side,

$x^2+\frac{b}{a}x=\frac{-c}{a}$

Add $(\frac{b}{2a})^2$ on both the sides,

$x^2+\frac{b}{a}x+(\frac{b}{2a})^2=\frac{-c}{a}+(\frac{b}{2a})^2$

completing the square, we have

$(x+\frac{b}{2a})^2=\frac{-c}{a}+(\frac{b}{2a})^2$

Now, solving for x,

$x+\frac{b}{2a}={\pm}\sqrt{\frac{-c}{a}+(\frac{b}{2a})^2}$

$x=\frac{-b}{2a}{\pm}\sqrt{\frac{-c}{a}+(\frac{b}{2a})^2}$

Multiply right side by $\frac{2a}{2a}$ ,

$x=\frac{-b{\pm}\sqrt{b^2-4ac}}{2a}$

which is the required quadratic formula.

8 0

4 years ago

Read 2 more answers

Select the correct solution set. 50 ≥ 15x

Leviafan [203]

50 > = 15x....divide both sides by 15
50/15 > = x
10/3 > = x or x < = 10/3

so the correct solution set is : { x | x < = 10/3}...its the 2nd one

6 0

4 years ago

Read 2 more answers

The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 3408 miles, with a variance

Murrr4er [49]

Answer:

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) = 0.975

Step-by-step explanation:

Step(i):-

The mean number of miles between services

μ= 3408 miles

The Variance of miles between services

σ² = 249,001

σ = √249,001 = 499

Let 'X' be a random variable in a normal distribution

Given sample size 'n' =36

Step(ii):-

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

Z = -163/83.16 = 1.96

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) = P(Z≤1.96)

= 0.5 + A(1.96)

= 0.5 + 0.4750

= 0.975

Final answer:-

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) =0.975

6 0

3 years ago

How many ways can 3 city council members from a list of 20 candidates be selected

brilliants [131]

20C2, the answer is 190

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