The product of x and y is less than or equal to 4

Write each expression without the absolute value symbol |3x+12|

klasskru [66]

Answer:

Step-by-step explanation:

|3x+12|

one is as it is one is the negative value of it

3x + 12 - (3x + 12)

- 3x - 12

That is because both negative and positive values put in am absolute value become positive.

3 0

2 years ago

15/21 equals 10/e <br> Solve for the missing value <br> Can someone help please ??

Paul [167]

Answer:

e=14

Step-by-step explanation:

15/21 =10/e

by cross multiplying,

e×15=21×10

15e=210

e=210/15

e=14

7 0

3 years ago

A patio on the scale drawing is 4 cm long. The scale used is 1 cm represents 5.5 feet. How long is

DochEvi [55]

The patio is 22 feet long.

The act of measuring is the practice of comparing a physical quantity with a recognized standard quantity of a like kind. A base unit, sometimes called a fundamental unit, is a unit used to quantify a base amount. A base quantity is a physical quantity that is part of a traditionally selected subset of physical quantities but cannot be stated in terms of the other physical values in the subset.

Given the scale used is 1cm which represents 5.5 feet.

measure of patio on scale drawing is 4cm.

then it's length is 5.5 × 4 = 22 feet

These measurements pertain to the following: length, mass, time, electric current, temperature, amount of a substance, and luminance. Here are the seven base units' definitions: Distance: meters (m) Metric length is measured in meters.

hence we get the value of the length of the patio as 22 feet.

Learn more about measurements here:

brainly.com/question/25716982

#SPJ9

8 0

2 years ago

What is 1,509 divded by3?

adelina 88 [10]

503

15\3=5 0/3=3 9/3=3
503 can't show the way I would usually do it

4 0

3 years ago

Read 2 more answers

(1 point) A noted psychic was tested for ESP. The psychic was presented with 180 cards face down and was asked to determine if t

Luba_88 [7]

Answer:

a) $z=\frac{0.239 -0.2}{\sqrt{\frac{0.2(1-0.2)}{180}}}=1.308$

b) $p_v =P(z>1.308)=0.0954$

Step-by-step explanation:

Data given and notation

n=180 represent the random sample taken

X=43 represent the correct guesses

$\hat p=\frac{43}{180}=0.239$ estimated proportion correct guesses

$p_o=0.2$ is the value that we want to test

$\alpha$ represent the significance level

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the ture proportion is higher than 0.2 or no.:

Null hypothesis: $p=0.2$

Alternative hypothesis: $p > 0.2$

When we conduct a proportion test we need to use the z statistic, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

Part a: Calculate the statistic

Since we have all the info requires we can replace in formula (1) like this:

$z=\frac{0.239 -0.2}{\sqrt{\frac{0.2(1-0.2)}{180}}}=1.308$

Part b: Statistical decision

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.

The next step would be calculate the p value for this test.

Since is a right tailed test the p value would be:

$p_v =P(z>1.308)=0.0954$

5 0

3 years ago