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2 years ago

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Do now for 3-22 A large pizza has a diameter 35cm. Two large pizzas cost $19.99. A medium pizza has a diameter 30 cm. Three medi

um pizzas cost $24.99. Which is the better deal: 2 large pizzas or 3 medium pizzas? EXPLAIN!
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1 answer:

Andreas93 [3]2 years ago

8 0

Area of a circle = pi * r^2 = pi * diameter^2 * 1/4

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A rectangle is placed around a semi circle as shown below. The width of the rectangle is 7yd. find the area of the shaded region

Nady [450]

Answer:

21.07 yd^2

Step-by-step explanation:

The width of the rectangle is also the radius of the semicircle. The length of the rectangle is 2 radii, or 14 yd.

The area of the shaded region is the same as the area of the semicircle subtracted from the area of the rectangle.

area of shaded region = area of rectangle - area of semicircle

A = LW - (1/2)(pi)r^2

A = 14 yd * 7 yd - (1/2)(3.14)(7 yd)^2

A = 98 yd^2 - (1.57)(49 yd^2)

A = 98 yd^2 - 76.93 yd^2

A = 21.07 yd^2

4 0

2 years ago

A composition of transformations ΔKLM maps ΔK"L"M" to . Triangle K L M is rotated 270 degrees about point P to form Triangle K p

telo118 [61]

Answer:

a 270° rotation about point P

Step-by-step explanation:

Because after transformation MK and M'K 'are at 90°, that implies that MK is rotated as 90 ° clockwise around P or 270 ° counterclockwise around P.

Therefore the transformation composition that maps $\triangle KLM$ to $\triangle$ K"L"M",

So, for this composition, the first transformation is 270° is the 270° rotation i.e to be counterclockwise about point P.

While the transformation of the second would be down translation that goes to the right.

hence, the last option is correct

6 0

2 years ago

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RS bisects ∠QRT. If m∠QRT = 116, what is m∠QRS?

Afina-wow [57]

Bisecting an angle means it divides the angle into two equal parts. If line rs bisects angle qrt which has a measure of 116 degrees, then angle qrs should have an angle of 58 degrees. Hope this answers the question. Have a nice day.

8 0

1 year ago

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Let X represent the amount of time until the next student will arrive in the library parking lot at the university. If we know t

Ber [7]

Answer:

The probability that it will take more than 10 minutes for the next student to arrive at the library parking lot is 0.0821.

Step-by-step explanation:

The random variable <em>X</em> is defined as the amount of time until the next student will arrive in the library parking lot at the university.

The random variable <em>X</em> follows an Exponential distribution with mean, <em>μ</em> = 4 minutes.

The probability density function of <em>X</em> is:

$f_{X}(x)=\lambda e^{\lambda x};\ x\geq 0, \lambda >0$

The parameter of the exponential distribution is:

$\lambda=\frac{1}{\mu}=\frac{1}{4}=0.25$

Compute the value of P (X > 10) as follows:

$P(X>10)=\int\limits^{\infty}_{10}{0.25e^{-0.25x}}\, dx$

$=0.25\times \int\limits^{\infty}_{10}{e^{-0.25x}}\, dx\\=0.25\times |\frac{e^{0.25x}}{-0.25}|^{\infty}_{10}\\=(e^{-0.25\times \infty})-(e^{-0.25\times 10})\\=0.0821$

Thus, the probability that it will take more than 10 minutes for the next student to arrive at the library parking lot is 0.0821.

3 0

1 year ago

On the way to her babysitting job, Mary rode her bike for the first mile. She stopped at a traffic light and waited a few minute

Aloiza [94]

The answer is b, hope this helps

7 0

2 years ago

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