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Mathematics

2 answers:

Serga [27]3 years ago

8 0

Answer:

um thanks i guess

Step-by-step explanation:

Furkat [3]3 years ago

8 0

Huh

so confused!!!!!!

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Kiana wants to cover a triangular area of her background with red, concrete patio stones. Each stone costs $0.42 and covers 29.2

Alex73 [517]

1. The problem says that the stone covers 29.26 square inches. So, the first thing you must do, is to convert 29.26 square inches (in²) to square feet (ft²):

1 in²=0.00694 ft², then:

29.26x0.00694= 0.20 ft²

2. The triangular area has the following surface:

A=bxh/2
A=(6 ft)(8 ft)/2
A=24.0 ft²

3. <span> Finally, the number of stones (N) that cover the triangular area is:
</span>
N= 24.0 ft²/0.20 ft²
N=120 stones

Answer: <span>Kiana should buy 120 stones to cover the triangular area in her backyard.</span>

8 0

4 years ago

Write the fraction as a mixed number 33/8

Dominik [7]

Answer:

4 1/8

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

I do not understand this

iragen [17]

Answer:

D. 2 (1/3) hours

Step-by-step explanation:

'Of' means multiplication, so we are going to multiply

3 (1/2) x (2/3) = 2 (1/3)

3.5 x 0.66 = 2.333

I hope this helps!

4 0

2 years ago

The point P(1,1/2) lies on the curve y=x/(1+x). (a) If Q is the point (x,x/(1+x)), find the slope of the secant line PQ correct

lukranit [14]

Answer:

See explanation

Step-by-step explanation:

You are given the equation of the curve

$y=\dfrac{x}{1+x}$

Point $P\left(1,\dfrac{1}{2}\right)$ lies on the curve.

Point $Q\left(x,\dfrac{x}{1+x}\right)$ is an arbitrary point on the curve.

The slope of the secant line PQ is

$\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{\frac{x}{1+x}-\frac{1}{2}}{x-1}=\dfrac{\frac{2x-(1+x)}{2(x+1)}}{x-1}=\dfrac{\frac{2x-1-x}{2(x+1)}}{x-1}=\\ \\=\dfrac{\frac{x-1}{2(x+1)}}{x-1}=\dfrac{x-1}{2(x+1)}\cdot \dfrac{1}{x-1}=\dfrac{1}{2(x+1)}\ [\text{When}\ x\neq 1]$