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3 years ago

Describe how multiplying the width by 14 affects the perimeter and the area of the figure.

Mathematics

1 answer:

Basile [38]3 years ago

6 0

Answer:

Step-by-step explanation:

Area of rectangle=width times height

Perimeter of rectangle=width plus width plus height plus height

If you have a rectangle that is 10 units wide and 5 units tall. The area would be 10X5=50units squared and the perimeter would be 10+10+5+5=30 units.

If you multiply the width by 14, everything changes. 10X14 is 140 units. So the width of the rectangle is now 140 units while the height is 5. The area would now be 140X5=700 Units squared and the perimeter would be 140+140+5+5=290 units.

Area of triangle= base time height divided by 2

Perimeter of triangle= side plus side plus side

If its a triangle, let's say a right triangle 10 units at the base and 5 units in height. The area will be 25 Units squared. 10X5=50 divide by 2=25 units squared. If you multiply the base by 14....140X5=700 divide by 2=350.

I didn't figure out the perimeter of the triangle, because I'm being too lazy to figure out the length of the third side.

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A sample of blood pressure measurements is taken for a group of adults, and those values (mm Hg) are listed below. The values

nika2105 [10]

Answer:

For systolic pressure data:

$\bar X =127.2\\\\S=17.91668\\\\CV=\frac{17.91668}{127.2}=0.14085$

For diastolic pressure data:

$\bar X =73.5\\\\S=12.54\\\\CV=\frac{73.5}{12.54}=0.17061$

Systolic pressure is slightly less variable, among individuals in the sample, than diastolic pressure.

Step-by-step explanation:

The coefficient of variation is defined as the percentage relative variation of a set of data with respect to its average. And it is calculated like this:

$CV=\frac{\bar X}{S}$

$S =\sqrt{\frac{1}{n-1} \sum_{i=1}^n (x_i-\bar{x})^2$

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

For systolic pressure data:

$\bar X =127.2\\\\S=17.91668\\\\CV=\frac{17.91668}{127.2}=0.14085$

For diastolic pressure data:

$\bar X =73.5\\\\S=12.54\\\\CV=\frac{12.54}{73.5}=0.17061$

It is observed that the systolic pressure shows greater standard deviation but less coefficient of variation. This is due to the greater magnitude of its measurement scale.

Systolic pressure is slightly less variable, among individuals in the sample, than diastolic pressure.

7 0

3 years ago

Find the area of the composite figure.

BARSIC [14]

Answer:

The total area is 132 ft squared

Step-by-step explanation:

I found the area of the triangle by doing bh/2 and got 60. I then found the read of the rectangle bu doing bh and got 72z I then added both areas and got 132 as the total area.

7 0

3 years ago

Read 2 more answers

Find the value of the variable and YZ if Y is between X and Z. XY= 11, YZ=4c, XZ=83

svet-max [94.6K]

So you know the whole line is XZ which is 83.Then you find out it is in two parts so that is XY and YZ which are 11 and 4c. You can make the equation:

11+4c=83
4c=72
c=18

c=18 and YZ=72

8 0

3 years ago

Read 2 more answers

A figure is created by using four semicircles and a rectangle. which is closest to the area of the figure?

Katena32 [7]

Step-by-step explanation:

area of rrctangle:

12×8= 96cm²

now if rectangle dissapears and then we "glue" what's left, we gonna get two circles

area of circle which gas diameter of 12cm( so radius will be 6cm)will be

πr²=36π≈113.04

another circles radius is 4cm,so area is:

16π≈50.25

sum of all areas: S≈96+113.04+50.25≈259.28cm2

7 0

3 years ago

Triangle 2 and triangle 3 were created by drawing an altitude in triangle 1. What is the relationship between the green highligh

Naily [24]

Answer:

Triangle 1 line segment AB and triangle 2 line segment BA correspond to each other

Step-by-step explanation:

Point b and point a don't correspond to anything else

triangle 1 and 2 are congruent my answer would be a 50/50 guess between C and D If it were me id risk it and go D but it is up to you.

4 0

3 years ago