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steposvetlana [31]
3 years ago
10

Sarah use a standard deck of 52 cards and selected a card at random. She recorded her suit of the card she picked, and then repl

aced the card. The results are in the table below. NO LINKS!!!
​

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
3 0

Answer:

7+9+11+3=30 (total)

(13)-

\frac{9}{30}  =  \frac{3}{10}

(14)-

\frac{13}{52}  =  \frac{1}{4}

(15)-

\frac{7}{30}  +  \frac{11}{30}  =  \frac{18}{30}   =  \frac{9}{15}  =  \frac{3}{5}

(16)-

\frac{13}{52}  +  \frac{13}{52}  =  \frac{26}{52}  =  \frac{1}{2}

(17)- Experimental and theoretical are not the same but within 10% of each other .

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The quotient of 365.085 and 79.8
Paul [167]

Answer:

4.575

Step-by-step explanation:

365.085/79.8=4.575

5 0
3 years ago
The remains of an ancient ball court include a rectangular playing alley with a perimeter of about 24m. The length of the alley
allsm [11]

ANSWER

Length of the playing alley = 9m

Width of the playing alley = 3m

STEP-BY-STEP EXPLANATION:

Given information

<em>The perimeter of a rectangular playing alley = 24 m</em>

<em>The length of the alley is three times the width</em>

Let l represents the length of the alley

Let w represents the width of the alley

Step 1: Write the formula for calculating the perimeter of a rectangle

\text{Perimeter of a rectangle = 2(l + w)}

Where l is the length and w is the width of the rectangle

Recall, length = 3 times the width of the alley

Mathematically,

\begin{gathered} l\text{ = 3 }\times\text{ w} \\ l\text{ = 3w} \end{gathered}

Step 2: Substitute the value of l = 3w into the above formula

\begin{gathered} P\text{ = 2(l + w)} \\ p\text{ = 24m} \\ l\text{ = 3w} \\ 24\text{ = 2(3w + w)} \end{gathered}

Step 3: Solve for w

\begin{gathered} 24\text{ = 2(4w)} \\ 24\text{ = 8w} \\ \text{Divide both sides by 8} \\ \frac{24}{8}\text{ = }\frac{8w}{8} \\ w\text{ = 3 m} \end{gathered}

From the calculations above, you will see that the width of the playing alley is 3m

Step 4: Solve for l

\begin{gathered} \text{Recall, l = 3w} \\ w\text{ = 3} \\ l\text{ = 3 }\times3 \\ l\text{ = 9m} \end{gathered}

Hence, the length of the playing alley is 9m

4 0
2 years ago
twenty two percent of the large pieces of mail that Rachel received this week were magazines and the rest were catalogs. Of the
Monica [59]

Answer:

28%

Step-by-step explanation:

78 x .36 = 28.08

4 0
4 years ago
Read 2 more answers
Use the quadratic formula to solve the equation 2x^2+2x-4=0
const2013 [10]

Answer:

<h2>x = -2 or x = 1</h2>

Step-by-step explanation:

The quadratic formula for the quadratic equation ax² + bx + c = 0:

x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

2x^2+2x-4=0\qquad\text{divide both sides by 2}\\\\x^2+x-2=0

a=1,\ b=1,\ c=-2

Substitute:

x=\dfrac{-1\pm\sqrt{1^2-4(1)(-2)}}{2(1)}=\dfrac{-1\pm\sqrt{9}}{2}=\dfrac{-1\pm3}{2}\\\\x_1=\dfrac{-1-3}{2}=\dfrac{-4}{2}=-2\\\\x_2=\dfrac{-1+3}{2}=\dfrac{2}{2}=1

4 0
3 years ago
(14 plus 42)divided by 7plus4 to the 2power
Liono4ka [1.6K]

Answer:

Given info in numersical form:

(14+42)÷(7+4)²

= 56÷11²

= 56÷(11×11)

= 56÷121

= 0.46

7 0
3 years ago
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