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3 years ago

Thrifty supply store normally sells candy bars for .59cents

Mathematics

1 answer:

Assoli18 [71]3 years ago

7 0

Answer:

well that is a pretty good deal i might have to go there

Step-by-step explanation:

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A church building fund has $3.2 million in it, which is 60% of the amount necessary for the project. What

Alexandra [31]

Answer:

$5.4 Million

Step-by-step explanation:

3.2 mill/x = 60/100

3.2 mill x 100 = 60x

320 mill = 60x

x = 5.3333 million, rounded up to 5.4 million

5 0

2 years ago

Write an equation of the line that passes through the points (1, -6) and<br> (5, -6).

iren2701 [21]

Answer:

Step-by-step explanation:

Hello ;

y= -6

7 0

2 years ago

Together 2 apples have 1/5 gram fat how many apples have a total of 4 grams of fat

dimulka [17.4K]

Answer:The answer is 40 apples.

Step-by-step explanation:

It takes 10 apples to make a gram of fat. Multiply the 10 apples by 4 grams of fat to find that it takes 40 apples to make 4 grams of fat.

3 0

2 years ago

Read 2 more answers

What is 66,253 divided by 317 and show me steps

fredd [130]

209 is the answer (if you know how to divide do it)

5 0

2 years ago

An electronic system has each of two different types of components in joint operation. Let X and Y denote the lengths of life, i

AURORKA [14]

Answer:

The average cost is $E(C) = 66$

The standard deviation of cost is $\sigma = 9.798$

Step-by-step explanation:

From the question we are told that

$E(X) = 4$

$E(Y) = 2$

$E(X^2) = 24$

$E(Y^2) = 8$

The cost of replacing the two component is C = 50 + 2 X + 4 Y

The variance of X is mathematically represented as

V(X) = $E(X^2) - [E(X)]^2$

Substituting values

$V[X] = 24 - 4^2$

$V[X] =8$

The variance of Y is mathematically represented as

V(Y) = $E(Y^2) - [E(Y)]^2$

Substituting values

$V[Y] = 8 - 2^2$

$V[X] =4$

The average of replacing the two component is

$E(C) = 2 * E(X) + 4* E(Y)$

substituting value

$E(C) = 50 + 2 * (4) + 4* (2)$

$E(C) = 66$

The variance of replacing the two component is

$V(C) = V(50 + 2X +4Y)$ Note: The variance of constant is zero

and X and Y are independent

=> $V(C) = 2^2 * V(X) + 4^2 * V(Y)$

substituting values

=> $V(C) = 4 * 8 + 16 * 4$

=> $V(C) = 32 + 64$

=> $V(C) = 96$

The standard deviation is

$\sigma = \sqrt{V(C)}$

substituting values

$\sigma = \sqrt{96}$

$\sigma = 9.798$

6 0

2 years ago