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3 years ago

The width of a rectangle is fifteen feet less than its length. If the area of the rectangle is 54 square feet, find the width.

Mathematics

1 answer:

PolarNik [594]3 years ago

4 0

Answer:

3 ft

Step-by-step explanation:

It is because 3 times 18 is 54 and 3 is 15 less than 18

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To divide 572/4 Stanley estimated to place the first digit of the quotient. In which place is the first digit of the quotient?

umka2103 [35]

Answer:

Step-by-step explanation:

I'm not quite sure but I think it is the 1st place digit. Because if you set it up as long division the 4 can divide into the 5. Thus, making this the the first place of the digit of the quotient. Hope this helps

7 0

3 years ago

One angle of a triangle measures 136°. The other two angles are congruent. Enter and solve an equation to find the measure x of

Juliette [100K]

136 + x + x = 180. Or, to simplify, 136 + 2x = 180. The congruent angles measure 23 degrees each.

We know this because of a simple rule that goes for all triangles: The measures of all three angles in a triangle will always add up to 180 degrees.

One angle of a triangle measures 136 degrees. The other two angles are congruent (have the same measure).

(x stands for an unknown angle measure.) So the equation we would use is 136 + 2x = 180. We can solve this within a few steps.

1. We subtract 136 from 2x in order to isolate 2x. But if we subtract something from the left side of the equation, we have to subtract it from the right side too. Otherwise the equation will be wrong; We would be taking away the balance.

2x = 180 - 136

2. Now that 2x is isolated, we solve 180 - 136.

2x = 46

3. If we know now that 2x is equal to 46, how do we find out what x is equal to? We divide by 2 (on both sides or it'll be wrong) to get x.

2x = 46

2x/2 = 46/2

x = 23

Now we know! x = 23... The other two angles are both 23 degrees. We can check to see if that's right by solving 23 + 23 + 136... Does it add up to 180? Yes! :)

7 0

3 years ago

A newspaper started an online version of its paper 14 years ago. In a recent presentation to stockholders, the lead marketing ex

son4ous [18]

Answer:

Answers are below

Step-by-step explanation:

The lead executive's statement says that because the company uses online ads, the revenues have more than doubled. This can be seen on the graph because the Online ad revenue increases while the Printed ad revenue decreases.

The approximate year that the two ad revenues were equal is halfway through the 7th year or at year 7.5

7 0

3 years ago

What is equivalent to -1/4y -2 1/4y + 1/2 (4-2y) a) -3y + 2 b) -3 1/2y + 2 c) -4y + 4

Amanda [17]

Answer:

B. -3 1/2y + 2

Step-by-step explanation:

Our expression is: $\frac{-1}{4} y-2\frac{1}{4} y+\frac{1}{2} (4-2y)$ .

Let's first distribute out that parentheses. Remember that distribution is simply taking the sum of the product of the outside term with each of the inside terms. Here, the outside term is 1/2 and the inside terms are 4 and -2y:

$\frac{1}{2} (4-2y)=\frac{1}{2} *4+\frac{1}{2} *(-2y)=2-y$

Now, we have:

$\frac{-1}{4} y-2\frac{1}{4} y+2-y$

We want to combine like terms, which means combining all the terms with y in them:

$\frac{-1}{4} y-2\frac{1}{4} y-y+2=\frac{-1}{4} y-\frac{9}{4} y-\frac{4}{4} y+2=\frac{-1-9-4}{4} y+2=\frac{-14}{4} y+2=\frac{-7}{2} y+2$

Remember that -7/2 can be written as the mixed number -3 1/2, so our final answer is:

-3 1/2y + 2

The answer is thus B.

~ an aesthetics lover

7 0

3 years ago

What is the probability of getting an even number on the roll of a six-sided die? 1/6 1/3 1/2

givi [52]

Answer: 1/2

Step-by-step explanation:

The sample space when a six sided die is thrown once is :

{ 1,2,3,3,5,6}

The even numbers are :

{2,4,6}

Therefore :

P(even) = n(even) / total number

That is

P(even) = 3/6

P(even) = 1/2

8 0

3 years ago