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Helen [10]
2 years ago
5

A rectangle has a perimeter of 54 cm. It has a length of 15 cm. What is its area? *

Mathematics
1 answer:
d1i1m1o1n [39]2 years ago
5 0

the area is 180 cm. to find the perimeter you would do 15+15+14+14 to get 54 cm. So for area you do (l×w) which is 15×14=180.

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What is 3 1/2+4 5/6?
MissTica
3 1/2 + 4 5/6

Multiply 3 1/2 by 3/3 so that both fractions have "6" as their bottom number (denominator).

3 1/2 × 3/3 = 3 3/6

So, our new question is this : 3 3/6 + 4 5/6

Basically, when both fractions have the same bottom number (denominator), all you have to do is add the top numbers (numerators) as well as adding the whole numbers. Remember, you always keep the bottom number (denominator) the same when you are adding or subtracting.

Whole number : 3 + 4 = 7

Numerator : 3 + 5 = 8

Denominator : 6

So, our answer is 7 8/6

However, because the top number (numerator) is greater than the bottom number (denominator), you have to make the whole number larger.

So, our answer is 8 2/6

Simplify.

8 1/3

~Hope I helped!~
3 0
3 years ago
2/21 × -3/13 +-7/9 - 2/21 × 10/13​
Viefleur [7K]

Answer:

\frac{-55}{63}

Step-by-step explanation:

=\frac{2}{21}(\frac{-3}{13})-\frac{7}{9}-\frac{2}{21}(\frac{10}{13})

=\frac{-2}{91}-\frac{7}{9}-\frac{2}{21}(\frac{10}{13})

=\frac{-2}{91} +\frac{7}{9} -\frac{2}{21} (\frac{10}{13})

=\frac{-655}{819}-\frac{2}{21} (\frac{10}{13} )

=\frac{-655}{819}-\frac{20}{273}

=\frac{-55}{63}

5 0
3 years ago
Read 2 more answers
I need help 2(4+2x)≥5x+5
timofeeve [1]

Answer:

x ≤ 3

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Distributive Property

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

2(4 + 2x) ≥ 5x + 5

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Distributive Property] Distribute 2:                                                                 8 + 4x ≥ 5x + 5
  2. [Subtraction Property of Equality] Subtract 5x on both sides:                       8 - x ≥ 5
  3. [Subtraction Property of Equality] Subtract 8 on both sides:                        -x ≥ -3
  4. [Division Property of Equality] Divide -1 on both sides:                                 x ≤ 3
5 0
2 years ago
What is the median of the following numbers 45,36,52,55,47, 39
Elena L [17]

Answer:

46

Step-by-step explanation:

By arranging the numbers from least to greatest, you can find the median by locating the central number in the data set.

8 0
2 years ago
The L- shaped A,B,C,D,F is the image of the L shape ABCDEF after reflection which of the following lines? ABCD
mrs_skeptik [129]

Answer:

X

Step-by-step explanation:

4 0
3 years ago
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