What is the cost of 2 bags of sugar if 3 bags cost $5.25 and the unit price for each bag is the same.

Mathematics

1 answer:

Lemur [1.5K]2 years ago

8 0

Answer:

$3.50

Step-by-step explanation:

5.25/3 = 1.75

1.75 x 2 = 3.5

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Is the number 29 prime or composite?

Tema [17]

Composite because number that are greater than 5 are composite

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Y is directly proportional to x,and y=216 when x=2. Find y when x=7.

makkiz [27]

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=216\\
x=2
\end{cases}\implies 216=k2\implies \cfrac{216}{2}=k
\\\\\\
108=k\qquad therefore\qquad \boxed{y=108x}
\\\\\\
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3 years ago

Find the slope of the line through the points (3,7) and (5,19)

Sedbober [7]

Answer:

12

Step-by-step explanation:

(3,7)(5,19)

(x,y)(x,y)

y2(19)- y1(7)

x2(5)-x1 (3)

formula. y2-y1

x2-x1

7 0

2 years ago

Given a population mean of 53.7 with a standard deviation of 1.3 and a sample size

a_sh-v [17]

Answer: A. 0.4899 B. 14

Step-by-step explanation:

If X = random variable

then, the standard deviation of the sampling distribution of X = $\dfrac{\sigma}{\sqrt{n}}$

GIven: $\sigma= 1.2, \n= 6$

The standard deviation of the sampling distribution of X = $\dfrac{1.2}{\sqrt{6}}=0.4899$

B. Let n be the sample size,

$0.325=\dfrac{1.2}{\sqrt{n}}\\\\\Rightarrow\ \sqrt{n}=\dfrac{1.2}{0.325}\\\\\Rightarrow\ \sqrt{n}=3.69230769231\\\\\Rightarrow\ n= (3.69230769231)^2=13.6331360947\approx 14$