Try entering 2x+3=15 @ x=6 into the text box. After you enter the expression, Algebra Calculator will plug x=6 in for the equation 2x+3=15: 2(6)+3 = 15. The calculator prints "True" to let you know that the answer is right. More Examples Here are more examples of how to check your answers with Algebra Calculator. Feel free to try them now.

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A new truck sells for $28,000depreciates (decreases in value) 13% each year. What is the Decay Factor, b?

sleet_krkn [62]

Not sure
te rate is r
for decay, it is
A=P(1-r)^t
r=rate
P=present amount
dunno what b is
but I guess
A=28000(1-0.13)^t
A=28000(0.87)^t
I would guess the decay factor would be 0.87

3 0

3 years ago

Read 2 more answers

Which number line shows the solution of –5x + 10 > –15?

hram777 [196]

I had the similar test and got it right so it should be B

5 0

2 years ago

Find the time required for an object to cool from 280°F to 220°F by evaluating the following where t is time in minutes. (Round

blsea [12.9K]

9514 1404 393

Answer:

5.8496 min

Step-by-step explanation:

$\displaystyle t=\frac{10}{\ln{2}}\int_{220}^{280}{\frac{1}{T-100}}\,dT=\frac{10(\ln{(280-100)}-\ln{(220-100)})}{\ln{2}}=\frac{10\ln{(3/2)}}{\ln{2}}\\\\\boxed{t\approx5.8496\quad\text{min}}$

Modern calculators can perform integration with high accuracy. This one gives the same result.

4 0

3 years ago

The perimeter of the triangle is 126 units.Find the measure of each side.​

The perimeter of the triangle is 126 units.Find the measure of each side.