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tangare [24]
3 years ago
8

At the rate of $2.00 per square foot the cost of painting the rectangular board with a semicircular top shown in the figure is $

?
Mathematics
2 answers:
Elenna [48]3 years ago
5 0
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
<span> 
it consists of a rectangle, dimensions  L = 4ft and W = 3ft = Ar = 4ft x 3ft = 12 ft^2

</span>then, you have one half of the area of the circle that has diameter  R = 3ft - radius will be r = 1.5ft the area of that half will be:

Ac = r^2 \pi/ 2
= (1.5 ft)^2 x 3.14 / 2
= 2.25 ft^2 x 3.4/2 
= 7.065 ft^2/ 2 
= 3.5325ft^2

A = Ar + Ac
A = 12ft^2 + 3.5325ft^2
A = 15.5325ft^2

<span>At the rate of $2 per square foot, the cost will be: 
$ 15.5325*2 = 31.07 </span>
uysha [10]3 years ago
3 0

the correct answer is $31.07

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Solve (factorise ).<br>​
Slav-nsk [51]

Answer: (1)  x²y (2) 7pqr  (3) a  (4) 6a²  (5) y³z²

Step-by-step explanation:

(1)  x^4y³ and x²y

     x^4y³ =  x²y(x²y²)

    x²y      = x²y

Therefore the Highest Common factor

               x²y which is the common factor.

(2) 14p²qr^4 = 2 x 7 x p² x q  x r^4

   49p²q²r    = 7 x 7 x p² x q² x r

   35pqr       = 5 x 7 x p x q x r

Therefore HCF =  7 x p x q x r

                         = 7pqr

(3) -a^5             = -( a x a x a x a x a )

                         = -(a^5)

       ab³            =   a x b x b x b

Therefore HCF =   a

(4)   6a²             = 2 x 3 x a x a

      -18a6          = -( 2 x3 x 3 x a x a x a x a x a x a)

     -12a²            = -( 2 x 2 x 3 x a x a )

Therefore HCF  = 2 x 3 x a²

                          = 6a²

(5)   3y³z²           = 3 x y x y x y x z x z , 3 x y³ x z²

      15y^4z²       =  3 x 5 x y x y x y x y x y x z x z, 3 x 5 x y^4 x z²

      y^6z³          = y^6 x z³

Therfore HCF  = y³ x z²

                         = y³z²

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5 0
3 years ago
Read 2 more answers
During a certain 11-year period, the Consumer Price Index (CPI) increased by
lara [203]

Answer:

B. Inflation

Step-by-step explanation:

Inflation refers to the increase in the price level or we can say in the other words that the prices are increased or rise in the goods and services of the particular economy

Moreover, if the inflation increased the buying power of the consumers goes decline

As in the given situation, the Consumer price index is increased by 55% but it is only increased by 15% for the next 15 year period

So this scenario shows the inflation situation

hence, the correct option is B. inflation

3 0
3 years ago
A jar contains 7 poker chips: 3 blue, 3 red and 1 white. You randomly select two chips from the jar. What is the probability tha
Triss [41]

Answer:

ok so

7+3+3+1=14

and if you pull one out the chance is

3/14

then

2/13

so 3/14*2/13

0.03296703296

so the answer is

0.03

Hope This Helps!!!

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2 years ago
Factor: 2n2 - 11n + 15
KATRIN_1 [288]

Answer:

(2n-1)(n-5)

Step-by-step explanation:

2n2-11n+5

2n2-10n-1n+5

(factorize)

2n(n-5)-1(n-5)

(2n-1)(n-5)

5 0
2 years ago
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