Find the width of a rectangle with a perimeter of 90 and a length of 15.A.90
B.15
C.45
D.30
I really need help.
Answers
So we know two of the sides have to be 15. Right?
So that means 15 x 2 = 30
So we know that two of the sides add up to equal 30.
The entire perimeter is 90. Well we've used 30 so lets see how much we have left to use.
90(the entire perimeter) - 30(the amount we know) = 60(what we have left)
So the last two sides of the rectangle equal 60, since there are two sides, let's divide the remaining perimeter by 2
60(both of the sides) / 2(the last 2 sides that we haven't found the length for yet) = 30
So now we know all of the sides.
Let's read the question again now.
"Find the 'WIDTH' of a rectangle with a perimeter of 90 and a 'LENGTH' of 15"
So it's 15 long(length), and 30 wide(width)
If this doesn't help, I can draw a picture and it mights make some more sense :)
Final answer:
The width of the rectangle is 30 units.
Explanation:
To find the width of a rectangle, we need to use the formula for the perimeter of a rectangle, which is 2(length + width). In this case, we are given the perimeter as 90 and the length as 15. Plugging these values into the formula, we get: 90 = 2(15 + width).
Now we can solve for the width. First, simplify the equation: 90 = 30 + 2(width).
Then, subtract 30 from both sides: 60 = 2(width). Divide both sides by 2 to isolate the width: width = 30.
Therefore, the width of the rectangle is 30 units.
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The distance from the hotel to the airport was 12 miles.
What is Algebraic expression ?
Algebraic expressions are the idea of expressing numbers using letters or alphabets without specifying their actual values. The basics of algebra taught us how to express an unknown value using letters such as x, y, z, etc. These letters are called here as variables. An algebraic expression can be a combination of both variables and constants. Any value that is placed before and multiplied by a variable is a coefficient.
From the information given, the taxi fair is equal to the initial cost of first mile added to the result of multiplying the cost per mile for the number of miles, which is:
t=2.25+3.50x, where:
t is the b
x is the number of miles
Now, you can replace t with 44.25 and solve for x to find the miles:
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44 = 3.50x
12.5714285714 = x
So, about 12.6
Answers
Solving the expressions, we find 140 = 140, thus, they are the same amount.
--------------------------
- One hundred is 1 multiplied by 100, thus
- 4 tens is 4 multiplied by 10, thus
- 1 hundred 4 tens is
--------------------------
- 14 tens is 14 multiplied by 10, thus
- Applying the multiplications, that is, solving the expressions, we get the same amount, this is why the measures are the same amount.
A similar problem is given at brainly.com/question/20742606
Expression: ____
b. The competition ends after 5 minutes. Who has more fireflies?
_____ more fireflies.
Answers
Answer:
a. 7m+19
b. You caught more fireflies, your friend caught less
Step-by-step explanation:
Answer:
Expression: 7m +19
Who has More? Me/You
18
5
44
3
Answers
Answer:
The answer is 5
Step-by-step explanation:
I took the test :)
Answer 5
Step-by-step explanation:
Answers
0.35 x 125 = 43.75
43.75 litres per day
Answer: The answer will be 78.75
Step-by-step explanation:
I have answer these question before.