To answer this we will divide the amount of miles by d
amount of hours. Lets do it:-
258.5 ÷ 5.5 = 47
47 miles per hour
CHECK OUR WORK:-
47 × 5.5 = 258.5
We were RIGHT!!
<span>
So, 47 miles per hour
Hope I helped ya!! </span>
Answer:
y=-7
Step-by-step explanation:
This is an expression, not an equation. y is -7 for any value of x, so f drops out of the equation and it beomes an expression.
The value of c is 81/64 for the expression a perfect square trinomial.
<h3>
What is an Expression?</h3>
An expression can be defined as a mathematical statement that consists of variables, constants and mathematical operators simultaneously.
It is given that an expression
x² +9/4x +c is a perfect square polynomial
c =?
(a+b)² = a² +2ab+b²
2ab = 9/4
b = 9/8
c = b² = 81/64
Therefore the value of c is 81/64 for the expression a perfect square trinomial.
To know more about Expression
brainly.com/question/14083225
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We have to write a proportion. We put 35 over 60 to show that 35 miles can go in every 60 minutes. Next to it we write another fraction and put 490 over x because we are trying to find how many MINUTES first. we multiply 490 by 60 which is 29400. Now we divide that by 35. we get 840 minutes. Now we convert this into hours by dividing it by 60 because there are 60 minutes in an hour. 840 divided by 60 is 14 hours. The answer is 14 hours.
