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3 years ago

Pls help on part A B and C plssssss

Mathematics

2 answers:

Fittoniya [83]3 years ago

6 0

Part be just and all the cost and c i cant do good luck hope that helps

Sergio [31]3 years ago

4 0

For part A, the answers are:
38.76
13.875
7.0
9.779

For part B, just add all the costs.

For part C, the answer is:
You solve it trying Mr. Lowe's equation, you should get 75.0318.
To fill the empty box, what you need to do is tell them why his answer is right or why it's wrong. I am doing it for you, you should fill that box with:

Mr. Lowe's equation was wrong because he added the numbers that have to be multiplied, and he multiplied the numbers that must be added.
The right equation is:
(10.2 × 3.80) + (12.5 × 1.18) + (6.25 × 1.12) + (8.89 × 1.10) = 70.289

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1 year ago

How to write 55% of n as an expression

Ray Of Light [21]

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3 years ago

Does anyone have a answer to this?

jolli1 [7]

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2 years ago

Read 2 more answers

a road follows the shape of a parabola f(x)=3x2– 24x + 39. A road that follows the function g(x) = 3x – 15 must cross the stream

Nonamiya [84]

the coordinates where the bridges must be built is $(3,-6)$ and $(6,3)$ .

Step-by-step explanation:

Here we have , a road follows the shape of a parabola f(x)=3x2– 24x + 39. A road that follows the function g(x) = 3x – 15 must cross the stream at point A and then again at point B. Bridges must be built at those points.We need to find Identify the coordinates where the bridges must be built. Let's find out:

Basically we need to find values of x for which f(x) = g(x) :

⇒ $f(x)-g(x)=0$

⇒ $3x^2- 24x + 39-(3x - 15 ) =0$

⇒ $3x^2- 24x + 39-3x + 15 =0$

⇒ $3x^2- 27x + 54 =0$

⇒ $x^2- 9x + 18 =0$

⇒ $x^2- 6x-3x + 18 =0$

⇒ $x(x- 6)-3(x - 6) =0$

⇒ $(x-3)(x- 6) =0$

⇒ $x=3 , x=6$

Value of g(x) at x = 3 : y=3x -15 = 3(3)-15 = -6

Value of g(x) at x = 6 : y=3x -15 = 3(6)-15 = 3

Therefore , the coordinates where the bridges must be built is $(3,-6)$ and $(6,3)$ .

7 0

3 years ago

Really struggling on this

navik [9.2K]

Angle 4 would be 77degrees because angle two is vertical to angle four.

Angle 3 and Angle 1 are equal because they are vertical to each other.

You would subtract 180 (degrees) minus 77 (degrees) and get 103 (degrees).

So Angle 3 and Angle 1 would both be 103 degrees.

You would get 180 degrees from the line.

5 0

1 year ago