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Mekhanik [1.2K]
3 years ago
14

Can you help me, please ……..

Mathematics
2 answers:
dedylja [7]3 years ago
5 0

Answer: The correct answer is 44.60

Step-by-step explanation:

Let's find the area of the rectangle first, and then add it with the area of the Circle to find the total area of the whole shape.

We know that the area of a Rectangle is L(Length) x W(Width)

So using the given information, 8 x 4 = 32

So the Area of the Rectangle = 32

Now let's find the area of the given circle,

<em>Area of a Circle: πr2                                     Remember ^ = stands for power</em>

The radius is half of the diameter

The diameter of the circle is 4

4/2 = 2 which is our radius, and now let's replace it in the equation.

= 3.14(r)^2

= 3.14(2)^2

= 3.14(4)

= 12.56 or some may have got 12.57

So now we add all areas together to get the total area,

32+12.57 = 44.57

Now rounding off to the nearest tenths, would give us 44.60

So the area of the figure rounded to the nearest tenth is 44.60

PtichkaEL [24]3 years ago
5 0

Answer:

44.56

Step-by-step explanation:

Rectangle area:

4 \times 8 = 32

2 circles area (full circle, since they are both a half of circle):

{ (\frac{4}{2}) }^{2}  \times π = 12.56

Total area:

32 + 12.56 = 44.56

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Which of these numbers is irrational? A) −0.125 B) −50 C) π D) 7 10
Marrrta [24]
Your answer would be C
7 0
4 years ago
Read 2 more answers
Simplify the expression. 10C7<br><br> A. 1<br><br> B. 3,628,800<br><br> C. 604,800<br><br> D. 120
Sophie [7]

Answer:

Combination

Step-by-step explanation:

Here by 10C7 we actually mean, C_{7}^{10}

And the formula for evaluating mCn is

=\frac{m!}{n!*(m-n)!}

Therefore

10C7 =  

=\frac{10!}{7!*(10-7)!} \\=\frac{10!}{7!*3!} \\

Where m! is called m factorial and can be evaluated as

m!= m*(m-1)*(m-2)*(m-3)*.......3*2*1

Hence

10!= 10*9*8......*3*2*1

7!= 7*8*6.....3*2*1

3!=3*2*1

With these we can evaluate

10C7

=\frac{10*9*8*7*.....3*2*1}{(3*2*1)*(7*6*5....3*2*1)}\\=\frac{10*9*8}{3*2*1} \\=\frac{10*3*4}{1} \\=120

Hence the answer is D

4 0
3 years ago
Manny bought a shirt at 70% of the regular price. He paid $ 33.60 for the shirt. What was the regular price
irga5000 [103]

Answer:

33.60 / 0.7 = $48

5 0
4 years ago
Pls HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!! :))
artcher [175]

Answer:

the fourth one

8 0
3 years ago
Read 2 more answers
A company makes t-shirts and their research shows that that price and demand are related linearly: p = m x + b . They know that
allsm [11]

Answer:

The linear equation relating price to demand is Q=-0.5*P + 30

Step-by-step explanation:

The demand for a good is the quantity of that good that the demanders are willing to purchase at a given price.

Then, the Demand Curve relates the quantity that a consumer would be willing to buy as a function of price.

You seek to determine the linear equation that relates the price to the demand Q = m * P + b where Q is the quantity demanded at a price P, and compared with the equation of the straight line y = mx + b, m is the slope and b is the ordinate to the origin.

On a line of the form y = m * x + b, the value of m, having two points, is calculated by:

m=\frac{y2-y1}{x2-x1}

And the ordinate to the origin b is calculated, taking the value of m, replacing any of the two points (replacing any of the two because it must give the same value of b) in the expression y = m * x + b and solving its value.

In the case of Q=m*P+b, the value of m, having two points, is calculated by:

m=\frac{Q2-Q1}{P2-P1}

Being:

  • Q1= 5
  • P1= $50
  • Q2= 10
  • P2= $40

and replacing:

m=\frac{10-5}{40-50}

you get:

m= -0.5

So, being Q=-0.5*P+b,  b is calculated by:

  • Replacing the point Q1= 5 and P1= 50

5= -0.5*50 + b → 5= -25 + b → 5+25= b → b= 30

  • Replacing the point Q1= 10 and P1= 40

10= -0.5*40 + b → 10= -20 + b → 10+20= b → b= 30

Then, <u><em>the linear equation relating price to demand is Q=-0.5*P + 30</em></u>

8 0
3 years ago
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