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3 years ago

What is the value of x in the equation 3x-5=1/2x+2x

Mathematics

1 answer:

creativ13 [48]3 years ago

4 0

Answer:

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

3x−5=

x+2x

3x+−5=

x+2x

3x−5=(

x+2x)(Combine Like Terms)

3x−5=

Step 2: Subtract 5/2x from both sides.

3x−5−

x−

x−5=0

Step 3: Add 5 to both sides.

x−5+5=0+5

x=5

Step 4: Multiply both sides by 2.

2*(

x)=(2)*(5)

x=10

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Please help me on this asap this is very important :D

Anettt [7]

Answer:

78.5

Step-by-step explanation:

area of a circle is $\pi r^{2}$

3.14( $5^{2}$ )=78.5

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3 years ago

On Monday the temperature was -5°F. How many degrees below zero was the temperature

stira [4]

The temperature was 5 degrees below 0

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2 years ago

a total of $9500 is invested, part at 10% simple interest and part at 9%. if the total annual return from the two investments is

Nutka1998 [239]

a total of $9500 is invested, part at 10% simple interest and part at 9%

if the total annual return from the two investments is $914.00

Amount invested = 9500

Total amount return means total yield = $914

Let x amount is invested at 10% simple interest

Interest for first part = 10 % times x = 0.10x

Remaining part invested is 9500 -x

Interest for remaining amount = 9% (9500 -x) = 0.09(9500-x)

Total interest yield is 914. Now we frame an equation

0.10x + 0.09(9500-x) = 914

0.10x +855 - 0.09x = 914 (combine like terms)

0.01 x + 855 = 914 (subtract 855)

0.01x = 59 ( divide both sides by 0.01)

So x = 5900

$5900 is invested in 10% simple interest

9500 - 5900 = $3600 is invested in 9% simple interest

3 0

3 years ago

Yuki walked and ran for 3 1/4 hours at an average of 4 miles per hour. How far did she go?

ch4aika [34]

Answer:

13 miles

Step-by-step explanation:

3 1/4 can be changed to 3.25

Then multiply 3.25 (the time) and 4 (the distance per hour) to get 13.

3 0

2 years ago

Read 2 more answers

April shoots an arrow upward at a speed of 80 feet per second from a platform 25 feet high. The pathway of the

zaharov [31]

Answer:

The maximum height of the arrow is 125 feet.

Step-by-step explanation:

The pathway of the arrow can be represented by the equation,

$h = -16t^2 +80t + 25$ .....(1)

Where h is height in in feet and t is time in seconds.

It is required to find the maximum height of the arrow. For maximum height, $\dfrac{dh}{dt}=0$ .

So,

$\dfrac{d(-16t^2 +80t + 25)}{dt}=0\\\\-32t+80=0\\\\t=\dfrac{80}{32}\\\\t=2.5\ s$

Put t = 2.5 s in equation (1). So,

$h = -16(2.5)^2 +80(2.5) + 25\\\\h=125\ \text{feet}$

So, the maximum height of the arrow is 125 feet.

6 0

3 years ago