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2 years ago

Plz help ill give u brainlist

Mathematics

1 answer:

JulijaS [17]2 years ago

3 0

Area of the 2 right triangles =2 (1/2 x 1.5 x 2 ) = 3 in²

Area of the 3 rectangles = (1.5 + 2 + 2.5) x 11 = 66 in²

Total Surface area = 3 + 66 = 69 in²

Answer: 69 in²

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How to solve this :') please help

blsea [12.9K]

Answer:

3/2

Step-by-step explanation:

sin(3π/4 - β) = sin(3π/4)cosβ - cos(3π/4)sinπ =

$\sin(\frac{3\pi}{4}-\beta)=\sin(\frac{3\pi}{4})\cos\beta-\cos\frac{3\pi}{4}\sin\beta\\=\frac{1}{\sqrt{2}}\cos\beta-(-\frac{1}{\sqrt{2}})\sin\beta\\\\=\frac{1}{\sqrt{2}}(\cos\beta +\sin\beta)\\\\\sin^2(\frac{3\pi}{4}-\beta)=\frac{1}{2}\cos\beta +\sin\beta)^2=\frac{1}{2}(\cos^2\beta +\sin^2\beta+2\sin\beta\cos\beta\\=\frac{1}{2}(1+\sin2\beta)=\frac{1}{2}(1-\frac{1}{5}) = \frac{2}{5}\\$

Use $\cot^2x=\csc^2x-1=\frac{1}{\sin^2x}-1$

$\cot^2(\frac{3\pi}{4}-\beta)=\frac{1}{\sin^2(\frac{3\pi}{4}-\beta)}-1 = \frac{1}{\frac{2}{5}}-1=\frac{5}{2}-1=\frac{3}{2}$

7 0

2 years ago

A weather station in Antarctica reports that the temperature is currently -44 °C and has been rising at a constant rate of 4.5 °

-Dominant- [34]

Answer:

-17

Step-by-step explanation:

4.5*6=27

so -44++27

6 0

2 years ago

ANSWER IT PLZ! Evaluate the expression. 3² + 6 × 2² - 4² ÷ 2³ = ?

guapka [62]

Answer:

3² + 6 × 2² - 4² ÷ 2³ = 31.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

the distance around a circle (the circumference) is about 3.14 times the diameter. If a circulares table has a diameter of 3 fee

Katyanochek1 [597]

Well.
The relation between the circumference of a circle and its diameter is described by the following equation: $Thecircumference=\pi d$
where d is the diameter of the circle.
For a giving diameter (d=3ft), we can substitute in the previous equation
The circumference of a circule= 3.14*3 (you can use ur calculator to find the exact number i guess it will be about 9.42 ft)

I hope it helps.

8 0

3 years ago

The reflexive property of congruence allows you to say that RST=____

weqwewe [10]

Answer:

The reflexive property of congruence allow us to say that RST = RST .

Option (C) is correct .

Step-by-step explanation:

Definition of Reflexive Property of congurence

The meaning of Congruence is figure has the same size and shape. If you were comparing something to itself, then it definitely have the same size and shape this is called Reflexive Property of congurence .

By using Reflexive property of congurence .

RST = RST

Therefore reflexive property of congruence allow us to say that RST = RST .

Option (C) is correct .

7 0

3 years ago

Read 2 more answers