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AleksAgata [21]
4 years ago
8

rectangle A measured by 3 inches. Rectangle B is a scaled copy of rectangle A. Select all of the measures pairs that could be th

e dimensions of rectangle B. A. 4.5 inches by 1.5 B. 8 inches by 2 inches D. 13.5 inches by 4.5 inches E. 90 inches by 30 inches
Mathematics
2 answers:
ankoles [38]4 years ago
6 0

Answer:

he is correct it is E. I had the same thing and he helped me a lot seeing this. He is correct

bulgar [2K]4 years ago
4 0
In the given rectangle, rectangle A, the length is 9 inches, and the width is 3 inches.
The length is 3 times the width.

Any rectangle in which the length is 3 times the width is similar to rectangle A.
Take each option and multiply the width by 3. If that is the length they tell you, then that rectangle is similar to rectangle A.

Option A.
1.5 in. * 3 = 4.5 in.
You are given length = 4.5 in.
It is similar.

Option B.
Width = 2 in.
2 in. * 3 = 6 in.
Given length is 8 in.
Not similar.

Option D.
Width = 4.5 in.
3 * 4.5 in. = 13.5 in.
Given length = 13.5 in.
Similar

Option E.
Width = 30 in.
3 * 30 in. = 90 in.
Given length = 90 in.
Similar.
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David keeps a range of stationery in his study. one could find pencils, erasers and pens in his study.5/7 of his stationery cons
tiny-mole [99]

The total units of stationery he has would be 55 approximately.

<h3>What is a system of equations?</h3>

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

David keeps a range of stationery in his study.

Let the pencil is represented by x.

Let the erasers be represented by y.

Let the pens be represented by z.

Let n be the stationery.

5/7 of his stationery consists of pencils.

x = 5/7 n

1/6 of the remaining stationery consists of erasers.

y = 1/6 n

There are 20 pens in his study.

z = 20

The total stationery

X + y + z

5/7 n + 1/6 n + 20 = n

20 = n -23/ 36 n

20 = 13 / 36 n

n = 55.38

Therefore, the total units of stationery he has would be 55 approximately.

Learn more about equations here;

brainly.com/question/10413253

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6 0
2 years ago
A restaurant decides to test their oven's thermostat to see if it is working properly, that is, if the actual temperature inside
Taya2010 [7]

Answer:

For this case we have information from a sample of n =20 times of temperatures of the oven

The parameter of interest is \mu population temperature mean of the oven

And the statistic is calculated with this formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

With n = 20 and represent the mean temperature of the oven  

The correct option for this case is:

mu = the true mean temperature of the oven xbar = the true mean temperature of the oven

Step-by-step explanation:

Previous concepts

Parameter represent a property of a population and is calculated with the information of all the populatio. Some examples are the population mean and deviation \mu,\sigma

Statistic represent a propoerty of a sample and are used used in order to describe the population parameters, since represent estimators of the real parameters.

Solution to the problem

For this case we have information from a sample of n =20 times of temperatures of the oven

The parameter of interest is \mu population temperature mean of the oven

And the statistic is calculated with this formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

With n = 20 and represent the mean temperature of the oven  

The correct option for this case is:

mu = the true mean temperature of the oven xbar = the true mean temperature of the oven

8 0
3 years ago
Read 2 more answers
Find the total surface area of this object.
Bumek [7]

Answer:

548

Step-by-step explanation:

area for the two triangles are 68

and for the two bigger rectangles is 320

and for the small rectangle 180

then add it all up and get 548

5 0
3 years ago
Jasonhas a coupon for $2.50 off any electronic Book from an online store. If the original price in dollars of an electric book b
Andru [333]
3+2.50=P or 5.50





this doesn't matter just trying to get 20 characters
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3 years ago
Rodrigo tiene 3 listones de madera: el primer listón es 0,75 cm más largo que el segundo; el segundo listón mide 22,25 cm; y el
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True true true si di di du du du dud jj

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