Answer:
2 hours and 20 minutes
Step-by-step explanation:
Answer:
exponential equation
<em>thia</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>form</em><em> </em><em>of</em><em> </em><em>quadratic</em><em> </em><em>equation</em><em> </em>
<u><em>Answer:</em></u>
No.
<em><u>Step-by-step explanation:</u></em>
For starters, it says the representation of the grocery cost is x, but we have the equation y=1.1x. So, because 1x+0.1x=1.1x, we can infer that 0.1x is equal to our delivery cost, which we can call z.
Now we have two equations. y=x+z, and z=0.1x.
For this problem, we don't necessarily have to find the actual cost: just prove whether or not Arlyn is correct or incorrect by plugging in numbers for variables. So we can plug in our values of 119.90 (total value) and 108.90 (supposed grocery cost value) into our equations.
We now have 119.90=108.90+z, and z=0.1(108.90). First we can compute z=0.1(108.90). Since we know multiplying by 0.1 is the same as multiplying by 1/10, it's easy to get 108.90/10, which is 10.89. Now we can substitute 10.89 into our second equation for z, to get 119.90=108.90+10.89, where you get 119.90=119.79, which is not true. Therefore, Arlyn is incorrect, because $119.79 is not equal to $119.90.
Greetings!To find the length of any side of a
right triangle, you can use the
Pythagorean Thereom. It states that the squares of two sides are equal to the square of the hypotenuse:
Input the information from the diagram into the formula:
Expand each term:
Combine like terms:
Add -169 to both sides:
Factor out the Common Term (2):
Factor the Complex Trinomial:
Set Factors to equal
0:
or
However, since we are solving for the side length, the only possible answer is 5 (a shape can't have a side with a negative length.)
The Solution Is:
I hope this helped!
-Benjamin
Answer:
64 cm
Step-by-step explanation:
In a rectangle, two sides opposite each other would be equal to 95. (5 plus 95 is 190. 318 minus 190 is 128. 128 divided by 2 is 64. 64+64+95+95=318.