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3 years ago

Write an expression to represent the area of a rectangle if the length of a rectangle is three units more than its width

1 answer:

5 0

We can call the width “x”. Since the length is three units more than its width, we can call the length “x+3”.

Thus, the area is x(x+3), which simplifies to x^2+3x.

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Use compatible numbers to estimate the quotient 5,514÷82

Sphinxa [80]

The answer is 67 because 67 x 82 is 5,494 which us close to 5,514

5 0

2 years ago

Read 2 more answers

You roll a six-sided die twice. What is the probability of rolling a number divisible by 2 and then a number divisible by 3?

Aneli [31]

If I am rolling a single dice what is the probability of rolling a number that is divisible by 2 and 3? The only number divisible by 2 and 3 is 6. So, would the answer be 1 out 6 or 1/6

3 0

3 years ago

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I made some brownies and cookies to sell for a local fundraiser. The cookies sold for $0.75 each and the brownies sold for $1.25

juin [17]

Answer:

Brownies made the most money

Step-by-step explanation:

Let c = cookies

b = brownies

We sold 51 items so c+b = 51

Cookies are .75 and brownies are 1.25

.75c + 1.25 b = 53.25

We have 2 equations and 2 unknowns

c = 51-b

Substituting into the second equation

.75(51-b) + 1.25b = 53.25

Distribute

38.25-.75b +1.25b = 53.25

Combine like terms

38.25+.5b = 53.25

Subtract 38.25 from each side

38.25 +.5b -38.25 = 53.25 -38.25

.5b =15

Divide each side by .5

.5b/.5 = 15/.5

b = 30

Now find c

c =51-b

c = 51-30

c = 21

They sold 30 brownies and 21 cookies

30 brownies * 1.25 =37.50

21 cookies *.75 = 15.75

Brownies made the most money

3 0

2 years ago

How do I find the perimeter of a figure to the nearest hundreth

aev [14]

Answer:

Step-by-step explanation:

add the two sides which are 6 and 6, then find the circumference of one of the circles and thats it, the reason why you only need one is because both of those circles are halfs, so they make one circle up, so its 6+6, then the circumference is 12.5667 so its 12+12.5667 which is 24.5667 which rounds up to 25.

5 0

2 years ago

When Raphael solved the system below by using the method of elimination, he changed the second equation to -8x-2y=-2 what proper

galben [10]

For this case, what we are going to do is use the following property:
Multiply an equation by a scalar.
In this case, the scalar will be:
k = -2
We have then that equation 2 will be:
k * (4x + y) = k * 1
-2 * (4x + y) = - 2 * 1
-8x-2y = -2
Answer:
The property that justifies this manipulation is:
Multiply an equation by a scalar.

4 0

2 years ago