3 years ago

Please help I don’t understand

Mathematics

1 answer:

S_A_V [24]3 years ago

7 0

Answer:

QS is a triangle. Because QS are connected and split down the middle which made a triangle.

Step-by-step explanation:

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4 in.

sleet_krkn [62]

Answer:

305.12 square inches

Step-by-step explanation:

The picture of the question in the attached figure

we know that

The area of the window is equal to the area of a rectangle, plus the area of two quarter circles plus the area of the smaller square between the two upper corners

Find the area of rectangle

$A=(12)(26-4)=264\ in^2$

Find the area of the two quarter circle

$A=2[\frac{1}{4}(3.14)(4^2)]$

$A=25.12\ in^2$

Find the area of the smaller square between the two upper corners

$A=(12-8)(4)=4^2=16\ in^2$

The total area is equal to

$A=264+25.12+16=305.12\ in^2$

4 0

3 years ago

Find the values of x on the curve y = cos x 2 + sin x at which the tangent is horizontal. (let n be an integer. enter your answe

icang [17]

Y = cos^2(x) + sin(x)
y' = --2sin(x) + cos(x) = 0 first derivative. Set to 0 for horizontal tangent.
-2sin(x) = -cos(x)
Tan(x) = 1/2
x = 26.565 degrees

8 0

3 years ago

Factor the common factor out of –12 + 15x. A. x(–8 + 5x2) B. 3(–4 + 5x) C. x(–12 + 15x) D. 3x(–4 + 5x)

Reika [66]

It will be B >>>>>>>>>

4 0

3 years ago

Read 2 more answers

I need help on #2 plz help

Ainat [17]

Answer:

Please see attached picture for full solution.