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3 years ago

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Olivia spent $20.00 on pencils and pens. Each pencil cost $2.00, and each pen cost $2.50. Which equation represents the number o

f pencils, x, and the number of pens, y, Olivia could have bought?

1 answer:

Solnce55 [7]3 years ago

5 0

Answer: $2.00x + $2.50y = $20.00

Step-by-step explanation:

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A company is interested in evaluating its current inspection procedure on large shipments of identical items. The procedure is t

olchik [2.2K]

Answer:

0.91854

Step-by-step explanation:

Given that a company is interested in evaluating its current inspection procedure on large shipments of identical items.

The procedure is to take a sample of 5 items and pass the shipment if no more than 1 item is found to be defective.

It is known that items are defective at a 10% rate overall.

If X is the number of defectives in the sample of 5, we find that X has two outcomes and each trial is independent of the other

So X is binomial with n =5, and p = 0.10

the probability that the inspection procedure will pass the shipment

= $P(X\leq 1)\\ \\= (0.9)^5 + 5 (0.1)(0.9)^4\\= (0.9^4) (0.9+0.5)\\= 0.91854$

7 0

3 years ago

Four less than the product of seven and a<br> number is seventeen. What is the number?

NARA [144]

<h3>hello!</h3>

=============================================

First of all, let the number be u.

The product of 7 and u means you should multiply 7 times u:

$\pmb{7u}$

Now, subtract 4:

$\pmb{7u-4}$

This expression equals 17:

$\pmb{7u-4=17}$

$\rule{200}{2}$

[Now, let's Find the Value of u]

First, add 4 to both sides:

$\pmb{7u=21}$

Now, divide both sides by 7:

$\pmb{u=3}$

=======================================================

<h3>notes:-</h3>

Hope everything is clear; if you need any clarification /explanation, kindly let me know, and I will comment and/or edit my answer :)

5 0

3 years ago

What is the volume of the shape below?

leonid [27]

Answer:

la verdad la respuesta es 15 el área de esa imágen

3 0

3 years ago

1)Which system of linear inequalities is graphed?

koban [17]

Answer:

1 ) D

2 ) D

Step-by-step explanation:

The general form of the straight line is given by y=mx+c, where m is the slope and c is y-intercept.

1 ) According to the graph, we get the co-ordinates (0,-1) and (-1,0).

Using these so-ordinates, we will find the equation of the line.

i.e. Slope $m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

i.e. $m = \frac{0-(-1)}{-1-0}$

i.e. m = -1

Now, substituting m and (0,-1) in general form, we get c = -1.

So, the equation of this straight line is y = -x-1.

We will now use 'Zero Test' i.e. substitute (0,0) in the required equation and since the given regions are away from the origin, this pair of points will not satisfy the equation.

So, we get y < -x-1 and as the region is given to less than x= -3.

Hence, option D is correct.

2) Now, according to the second graph, we get the points (0,-2), (-2,0) and (0,1), (-1,-1) for two lines respectively.

Solving as in 1) we get that the equations of the lines are given by x+y = -2 and y = 2x+1 respectively.

Again using 'Zero Test', we see that these pair of points does not satisfy the equations.

So, we get x+y < -2 and y > 2x+1.

Hence, option D is correct.

3 0

4 years ago

Read 2 more answers

Write the answer as a decimal fraction 14/100=? /10+? /100=?

lidiya [134]

14.100 or you can do something like that try it in see if it’s right

7 0

3 years ago