All categories

3 years ago

What is the nearest perimeter of rectangle ABCD, to the nearest tenth?

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

5 0

Answer: B

Step-by-step explanation:

Perimeter = 2(length+width)

'CD' = 20×cos(30) = 17.3205

width 'AD' = 20×cos(60) = 10

Perimeter = 2(17.3205+10)

= 2(27.3205)

= 54.641 =54.6

You might be interested in

What are the coordinates of R'?<br> OR'(4-1)<br> OR'(-4,1)<br> OR (1.4)<br> OR'(-1,-4)

Lynna [10]

Answer:

OR' (-4,1)

Step-by-step explanation:

Answer is OR' (-4,1)

Hope it helps!

Please mark as brainliest and thanks!

Byeee!

5 0

3 years ago

Evaluate the expression 12-3x+4(10-2 cubed) for x=2/3

suter [353]

12 - 3x + 4 ( 10 - 2^3 )
12 - 3 ( 2/3 ) + 4 ( 10 - 2^3 )
12 - 2 + 4 ( 10 - 8 )
12 - 2 + 40 - 32
10 + 8
18

4 0

3 years ago

*Write an algebraic expression for each situation*

belka [17]

5) 12<h

6) 4(x+1/2)

7)6-(z÷3)

8)2(k+(s-2))

9) 8>s

10) 5(m÷2)

4 0

4 years ago

What are biofertilisiers

lbvjy [14]

☆ Bio fertilizer :- Biofertilisers are organisms that enrich the nutrient quality of the soil. The main source f biofertilizers are bacteria, fungi and cyanobacteria.

HOPE IT HELPS ❣️

3 0

3 years ago

The Environmental Protection Agency records data on the fuel economy of many different makes of cars. Data on the mileage of 20

artcher [175]

Answer:

A) 8.5 miles per gallon

Step-by-step explanation:

Given

$x = \{12\ 13\ 15\ 16\ 16\ 17\ 18\ 18\ 19\ 19\ 20\ 20\ 22\ 23\ 24\ 26\ 26\ 27\ 27\ 29\}$

$n = 20$

Required

The IQR

This is calculated as:

$IQR = Q_3 - Q_1$

Calculate $Q_1$

$Q_1 = \frac{1}{4}(n + 1)th$

$Q_1 = \frac{1}{4}(20 + 1)th$

$Q_1 = \frac{1}{4}(21)th$

Remove bracket

$Q_1 = 5.25th$

This means that:

$Q_1$ is the mean of 5th and 6th item

From the given data:

$5th \to 16$

$6th \to 17$

So, we have:

$Q_1 = \frac{1}{2}(16 + 17)$

$Q_1 = \frac{1}{2}(33)$

$Q_1 = 16.5$

$Q_1 = 16.25$

Calculate $Q_3$

$Q_3 = \frac{3}{4}(n + 1)th$

$Q_3 = \frac{3}{4}(20 + 1)th$

$Q_3 = \frac{3}{4}(21)th$

Remove bracket

$Q_3 = 15.75th$

This means that:

$Q_3$ is the mean of 15th and 16th item

From the data:

$15th \to 24$

$16th \to 26$

So:

$Q_3 = \frac{1}{2}(24 + 26)$

$Q_3 = \frac{1}{2}(50)$

$Q_3 = 25$

Recall that:

$IQR = Q_3 - Q_1$

$IQR = 25 -16.5$

$IQR = 8.5$

7 0

3 years ago