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2 years ago

What mistake did Lily make if this equation has no solution?

Mathematics

1 answer:

Allushta [10]2 years ago

6 0

Answer:

Step-by-step explanation

I think im not very sure

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What is the area of the sector with a central angle of 49° and a radius of 11 cm? Use 3.14 for pi and round your final answer to

olga_2 [115]

Answer:

$\boxed{\text{51.71 cm}^{2}}$

Step-by-step explanation:

If the angle θ is in radians, the formula for the area (A) of a sector of a circle is

A = ½r²θ

If θ is in degrees

$A = \dfrac{1}{2}r^{2}\theta \times \dfrac{\pi \text{ rad}}{180^{\circ}}= \pi r^{2}\times\dfrac{\theta }{360}$

Data:

θ = 49°

r = 11 cm

Calculation:

$\begin{array}{rcl}A& = &3.14\times 11^{2}\times\dfrac{49}{360}\\\\ & = &3.14 \times 121 \times 0.1361\\ & = & \mathbf{51.71}\\\end{array}\\\text{The area of the sector is }\boxed{\textbf{51.71 cm}^{2}}$

4 0

3 years ago

Pregnancy length (in days) is a normally distributed random variable with a mean of 266 days and a standard deviation of 16 days

velikii [3]

Answer:

it=552

Step-by-step explanation:

with rounding it = 550

5 0

2 years ago

After 9 months, the simple interest earned on an investment of $1200 is $72. find the interest rate.

Deffense [45]

Use the formula i=prt, where i is the interest earned, p is the principal, r is the rate (as a decimal fraction) and t is the elapsed time, in years.

Here i = $72 = $1200 r (9/12) (9 months is 9/12, or 3/4, of 1 year)
Reducing,
$72 = $900r
Solving for r, r=0.08, or 8 percent per year.

7 0

3 years ago

Input output please

dlinn [17]

Step-by-step explanation:

<h2>hope it helps.</h2><h2>stay safe healthy and happy.</h2>

8 0

2 years ago

HELP HELP HELP HELP WILL GIVE BRAINLIEST<br><br>4a^2 - b^2 - 2a + b<br>factor

Roman55 [17]

Answer:

4a2−b2−2a+b, there are no factorable rational numbers.

Step-by-step explanation:

4 0

2 years ago