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3 years ago

14

a pair of shoes is on sale for 30% off . the original price is p. which expression can be used to find the price of shoes after

the dicount?

1 answer:

poizon [28]3 years ago

5 0

Answer:

.30p

Step-by-step explanation:

You might be interested in

Hello ppl........help plz

olya-2409 [2.1K]

Answer:

Answer is A. 36x-11y

Step-by-step explanation:

34x-12x+14x-18y+7y

=22x+14x-18y+7y

=36x-11y

6 0

3 years ago

1. simplify radical expression. <br> please and thank you

gayaneshka [121]

Answer:

option number 2 should be the answer if I'm wrong I'm mega sorry not that great at math. :>

3 0

3 years ago

Mariner Middle School has 550 students the height of each student is measured and recorded at the beginning of the year . A scho

tatiyna

Answer:

C) A histogram because the class organizes the data into different ranges or intervals.

Step-by-step explanation:

A histogram is a graphical representation of numerical data. It is an approximate approach that groups a set of data into ranges on the x axis and having their match frequencies on the y axis.

A histogram makes it possible to represent a large amount of data and frequency in just one graph because of the interval/range option.

Because Mariner Middle school has a large number of students (550) and their height organized into equal intervals, the histogram is the best option.

3 0

2 years ago

A certain insecticide kills 60% of all insects in laboratory experiments. A sample of 12 insects is exposed to the insecticide i

Vilka [71]

Answer:

The probability that exactly 10 insects will die

P( X = 10 ) = 0.06385

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given a certain insecticide kills 60% of all insects in laboratory experiments

Given proportion p = 0.60

q = 1 - 0.60 = 0.40

Given sample size 'n' = 12

<u><em>Step(ii):</em></u>-

Let "X' be the random variable of binomial distribution

$P(X=r) = n_{C_{r} } p^{r} q^{n-r}$

The probability that exactly 10 insects will die

$P(X=10) = 12_{C_{10} } (0.60)^{10} (0.40)^{12-10}$

$n_{C_{r} } = \frac{n!}{(n-r)!r!} = \frac{12!}{(12-10)!10!} = 66$

$P(X=10) = 66 X (0.60)^{10} (0.40)^{2} = 0.06385$

<u><em>Final answer:</em></u>-

The probability that exactly 10 insects will die

P( X = 10 ) = 0.06385

4 0

3 years ago

If p is inversely proportional to the square of q, and p is 6 when q is 8, determine p

slavikrds [6]

Answer:

$p=96$

Step-by-step explanation:

Because p is inversely proportional to the square of q, we have that $p(q^2)=k$ for some constant k. We know that $p=6$ when $q=8$ , so we have that $k=(6)(8)^2=6*64=384$ .

We want to know what p is when q is equal to 2, so we have that $p(2)^2=384$ , which gives $4p=384$ , which gives $\boxed{p=96}$ .

Note: $\frac{96}{6}=(\frac{8}{2})^2$ . Coincidence?

8 0

2 years ago