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4 years ago

Write an equation for the description.

Mathematics

1 answer:

NeX [460]4 years ago

5 0

10 • x/2 + 4 = 7 is the equation

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Zareena has 24 minutes to work on her math homework and each problem is taking g her 2/3 of a minute on average to complete whic

adelina 88 [10]

Answer:

Step-by-step explanation:

if it takes her 2/3 a minute then

24 divided by 2/3 is the answer

3 0

3 years ago

A quality control inspector has drawn a sample of 10 light bulbs from a recent production lot. Suppose 20% of the bulbs in the l

Neko [114]

Answer:

The probability is 0.0008.

Step-by-step explanation:

Let X represents the event of defective bulb,

Given, the probability of defective bulb, p = 20 % = 0.2,

So, the probability that bulb is not defective, q = 1 - p = 0.8,

The number of bulbs drawn, n = 10,

Since, binomial distribution formula,

$P(x=r) = ^nC_r p^r q^{n-r}$

Where, $^nC_r = \frac{n!}{r!(n-r)!}$

Hence, the probability that exactly 7 bulbs from the sample are defective is,

$P(X=7)=^{10}C_7 (0.2)^7 (0.8)^{10-7}$

$=120 (0.2)^7 (0.8)^3$

$=0.000786432$

$\approx 0.0008$

6 0

3 years ago

Use the spinner to answer the question. It is divided into 8 congruent sections. Orange, Blue, Pink, Brown, Purple, Red, Bronze,

valentinak56 [21]

Using proportions, it is found that the statement that Tiffany would expect the spinner to land on a color section beginning with the letter "B" roughly 48 times is True.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, out of 8 sections, 4(Blue, Brown, Bronze and Black) begin with letter "B". We want to find the equivalent amount out of 98 trials. Hence, the <em>rule of three </em>is:

8 trials - 4 start with "B".

96 trials - n start with "B".

Applying cross multiplication:

8n = 4 x 96

n = 0.5 x 96

n = 48.

Hence, the statement is True.

More can be learned about proportions at brainly.com/question/24372153

3 0

2 years ago

Chris has already baked 1 pie, and she can bake 1 pie with each additional cup of sugar she buys. How many additional cups of su

stealth61 [152]

Answer:
37 cups because one for each pie right? Or would it be 36 cups since she already baked one.

6 0

3 years ago

Find the unit rate with the second given unit in the denominator. 1090 heartbeats in 15 min A. B. C. D.

podryga [215]

1090/15
= 73 heartbeats per minute

hope it helps :)

4 0

3 years ago