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2 years ago

A student is making a model of the famous Giza pyramid,

Mathematics

2 answers:

harkovskaia [24]2 years ago

8 0

Answer:

Choose the option D

NikAS [45]2 years ago

8 0

I think it’s B. The original model has 4 sides and it wouldn’t make sense to increase the number of sides for its replica. It would still have 4 sides but in a smaller scale.

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What is the area of the sector with a central angle of 49° and a radius of 11 cm? Use 3.14 for pi and round your final answer to

olga_2 [115]

Answer:

$\boxed{\text{51.71 cm}^{2}}$

Step-by-step explanation:

If the angle θ is in radians, the formula for the area (A) of a sector of a circle is

A = ½r²θ

If θ is in degrees

$A = \dfrac{1}{2}r^{2}\theta \times \dfrac{\pi \text{ rad}}{180^{\circ}}= \pi r^{2}\times\dfrac{\theta }{360}$

Data:

θ = 49°

r = 11 cm

Calculation:

$\begin{array}{rcl}A& = &3.14\times 11^{2}\times\dfrac{49}{360}\\\\ & = &3.14 \times 121 \times 0.1361\\ & = & \mathbf{51.71}\\\end{array}\\\text{The area of the sector is }\boxed{\textbf{51.71 cm}^{2}}$

4 0

2 years ago

F (x) = –2x+1<br> If<br> f (x) = 11<br> Find the value of x:

a_sh-v [17]

Answer:

Now x is equals to 11

-2(11) + 1 = - 22 + 1 = - 21

The answer is - 21

Thank you and please rate me as brainliest as it will help me to level up

8 0

2 years ago

Help plz I really need to pass

Tresset [83]

Answer:

2.56

Step-by-step explanation:

The equation they dive u: d = 16t^2, so in the question they said what's the distance, d, if t = 0.4

So you just have to replace t with 0.4:

d = 16t^2

d = 16(0.4)^2

d = 16(0.16)

d = 2.56

3 0

2 years ago

Put in order from least to greatest 12, 8, -9, -12, 10, 16 *

Nina [5.8K]

Answer:

-12,-9,8,10,12,16

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

I'm having trouble figuring out how I could go about this. Can someone work it out then explain so that I know how to do this ne

skad [1K]

Answer:

RT-ST=QS-ST, because subtracting the same quantity from two lines that have been stated to be equal.

Therefore RS=TQ

Angle R=Angle Q, because it is an isosceles triangle

Triangle AR

S is congruent to ATQ.

AT=AS

Because TAS is isosceles, angles 5 and 6 are equal.

Therefore, angles 4 and 7 are equal, because they are supplementary angles of the same angle.

And angles 1 and 3 are equal, because the other two angles in the triangle are equal.

The triangles RAT and QAS are congruent with SAS.

Step-by-step explanation: Can u gimme brain plz!

6 0

2 years ago