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3 years ago

PLEASE HELP THANKS

Mathematics

1 answer:

irinina [24]3 years ago

6 0

Answer:

38/5

Step-by-step explanation:

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How do you solve for percent increase and percent decrease?

murzikaleks [220]

for increase:

Increase = New Number - Original Number

Then divide the increase by the original number and multiply the answer by 100

For decrease:

Decrease = Original Number - New Number

Then divide the decrease by the original number and multiply the answer by 100

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3 years ago

Benson purchased a $1,800 certificate of deposit that earns simple annual interest. At the end of 1 year, the certificate was wo

Makovka662 [10]

Answer:

Step-by-step explanation:

Step one:

given data

principal P= $1800

time t= 1 year

Final amount A=1857.60

rate r=?

Step two:

we are expected to solve for the rate, let assume the investment is a simple interest type.

A=P(1+rt)

solve for r we can substitute our data

1857.60=1800(1+r*1)

1857.60=1800+1800r

1857.60-1800=1800r

57.6=1800r

r=57.6/1800

r=0.032

0.032*100= 3.2%

<u>This shows that the rate is 3.2%</u>

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3 years ago

Triangle inequality theorem

Lapatulllka [165]

Triangle inequality theorem states that the sum of any two sides of a triangle must be greater than the third side because if not you don't have a triangle.

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4 years ago

Car X weighs 136 pounds more than car Z. Car Y weighs 117 pounds more than car Z. The total weight of all three cars is 9439 pou

Aleksandr [31]

Let x, y and z denote the weighs of car X, car Y and car Z, respectively.

We know that car X weighs 136 more than car Z, this can be express by the equation:

$x=z+136$

We also know that Y weighs 117 pounds more than car Z, this can be express as:

$y=z+117$

Finally, we know that the total weight of all the cars is 9439, then we have:

$x+y+z=9439$

Hence, we have the system of the equations:

$\begin{gathered} x=z+136 \\ y=z+117 \\ z+y+z=9439 \end{gathered}$

To solve the system we can plug the values of x and y, given in the first two equations, in the last equation; then we have:

$\begin{gathered} z+136+z+117+z=9439 \\ 3z=9439-136-117 \\ 3z=9186 \\ z=\frac{9186}{3} \\ z=3062 \end{gathered}$

Now that we have the value of z we plug it in the first two equations to find x and y:

$\begin{gathered} x=3062+136=3198 \\ y=3062+117=3179 \end{gathered}$

Therefore, car X weighs 3198 pound, car Y weighs 3179 pounds and car Z weighs 3062 pounds.

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1 year ago

Jacob walked for x miles and then cycled for y miles between his home and the library. the number of miles Jacob cycled was 3 mi

Anton [14]

Walk: 1
Bike: 5

y=2x+3
x+2x+3=6
3x+3=6
3x=3
x=1
6-1=5

3 0

3 years ago

Read 2 more answers