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OLga [1]
3 years ago
14

PLEASE PLEASE HELP ASAPP

Mathematics
2 answers:
adoni [48]3 years ago
5 0

Answer:

17pi/15

Step-by-step explanation:

s = r *theta where r is the radius and theta is the central angle in radians

Convert 51 to radians

51 * pi/180 = 51pi/180

s = 4 * 51pi/180

   = 17pi/15

vaieri [72.5K]3 years ago
4 0

Answer:

Arc\ length = 3.6 cm

Step-by-step explanation:

Arc \ Length = 2 \pi r \frac{ \theta}{360}

                 = 2 \times \pi \times 4 \times \frac{51 }{360}\\\\=2 \times \pi \times \ 4 \times 0.142\\\\=3.5688  \\\\Arc\ length = 3.6 cm

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If i have 480 grams of pasta for 4 people how many kilograms will i need for 14 people
Afina-wow [57]

\bf \begin{array}{ccll} \stackrel{pasta}{grams}&people\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 480&4\\ g&14 \end{array}\implies \cfrac{480}{g}=\cfrac{4}{14}\implies \cfrac{480}{g}=\cfrac{2}{7} \\\\\\ \cfrac{480\cdot 7}{2}=g\implies 1680=g

now, there are 1000 grams in one Kilogram, so in 1680 grams, there are 1680/1000 Kilograms, namely 1.680.

7 0
3 years ago
C=2πr<br> Solve for r<br><br> R=2π/C<br> R=C/2π<br> R=2C/π<br> R=π/2C
Evgen [1.6K]
I hope this helps you


2pi.r=C


r=C/2pi
7 0
3 years ago
Find the following of each arc measure
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8 0
3 years ago
The length of a rectangle is 3 centimeters less than four times its width. Its area is 10 square centimeters. Find the dimension
Kay [80]

Answer:

W = 2 cm

L = 5 cm

Step-by-step explanation:

A rectangle is a four sided shape with 4 perpendicular angles. It has two pairs of parallel sides which are equal in distance: width and length. Its area, the amount of space inside it, can be found using the formula A = l*w. If the area is 10 cm² and the length is "3 cm less than 4 times the width" or 4w - 3, you can substitute and solve for w.

A = l*w

10 = (4w - 3)(w)

10 = 4w² - 3w

Subtract 10 from both sides to make the equation equal to 0. Then solve the quadratic by quadratic formula.

4w² - 3w - 10 = 0

Substitute a = 4, b = -3 and c = -10.

w = \frac{3 +/- \sqrt{(-3)^2 - 4(4)(-10)} }{2(4)} = \frac{3 +/- \sqrt{9 +160)} }{8} =  \frac{3 +/- \sqrt{169} }{8} = \frac{3+/-13}{8}

There are two possible solutions which can be found.

3 + 13 / 8 = 16/ 8 = 2

3 - 13 / 8 = -10/8 = -5/4

Since w is a side length or distance, it must be positive so w = 2 cm.

If the width is 2 cm then the length is 4(2) - 3 = 8 - 3 = 5 cm.

8 0
3 years ago
Jack had three times as many magic beans as his mother. after he gave her 23 beans, he still has 20 more than she had. how many
posledela

There are 43 magic beans althogether

4 0
3 years ago
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