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Eddi Din [679]
4 years ago
5

90% of what number is 57

Mathematics
1 answer:
aliina [53]4 years ago
4 0
To solve this, set up the equation, 90% of x being .9*x=57. Then, solve for x, x=57/.9=6 \frac{1}{3}=6.333
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Identify the product and express it in scientific notation. 4.7 x (6.02 x 10^23)
Anna11 [10]

Answer:

\large\boxed{4.7\times(6.02\times10^{23})=2.8294\times10^{24}}

Step-by-step explanation:

The scientific notation:

a\times10^k\ \text{where}\ 1\leq a

We have:

4.7\times(6.02\times10^{23})=(4.7\times6.02)\times10^{23}=28.294\times10^{23}\\\\=2.8294\times10\times10^{23}=2.8294\times10^{24}

6 0
3 years ago
Graph a line with a slope of -3 that contains the point (4,-2).
True [87]

Answer:

the line is going to be negative

start the line on (4, -2) so you know the line will contact the point

make sure the slope is -3

i dont know how else to help

Step-by-step explanation:

8 0
3 years ago
a juice can is 16 cm tall and has a diameter of 9cm . the ends of the can are tin and the body is cardboard . what is the total
Anvisha [2.4K]
Try dividing the two you will get 1.7cm
5 0
3 years ago
A seafood restaurant claims an increase of $1750.78 over its average profit during a week where it introduced a special of baked
Bess [88]
250.1 repeating i think
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If the angle between each blade of the wind turbine is the same, and each blade has a length of 20 meters, find the distance bet
Ket [755]

A typical windmill has three blades. We can envision these blades in a circle, which a circle = 360 degrees. We want to divide up the angles of the blades so they are even or makes up 360 degrees. We have three blades so we have 3 angles to divide by 360 degrees. So, 360 / 3 = 120 degrees. Now that we know the angle of the blades, we can use the Law of Cos to solve the distance between the blade tip.


Law of Cos

c^2 = a^2 + b^2 - 2(a)(b)(\cos A)


We know

a = 20

b = 20

A = Angle = 120


We need to solve for c

c^2 = a^2 + b^2 - 2(a)(b)(\cos A)


Take the square root of each side of the =

\sqrt{c^2} = \sqrt{a^2 + b^2 - 2(a)(b)(\cos A)}

c = \sqrt{a^2 + b^2 - 2(a)(b)(\cos A)}

Input the values we know into the formula and solve for c:

c = \sqrt{a^2 + b^2 - 2(a)(b)(\cos A)}

c = \sqrt{20^2 + 20^2 - 2(20)(20)(\cos 120)}

c = \sqrt{400 + 400 - 2(20)(20)(\cos 120)}

c = \sqrt{800 - 2(20)(20)(\cos 120)}

c = \sqrt{800 - 2(400)(\cos 120)}

c = \sqrt{800 - 800(\cos 120)}

c = \sqrt{800 - (-400)}

c = \sqrt{1200}

c = 20\sqrt{3}

c = 34.641016

c = 34.64


We now have our answer, which is 34.64 and that is C.






3 0
4 years ago
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