All categories

3 years ago

Help please, I don’t understand

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

8 0

Answer:

v = 16.155 m/s

Step-by-step explanation:

$W = 0.5 mv^2 \\ plug \: m = 6 \: and \: w = 783 \\ 783 = 0.5 \times 6 \times {v}^{2} \\ 783 = 3 {v}^{2} \\ {v}^{2} = \frac{783}{3} \\ {v}^{2} = 261 \\ v = \sqrt{261} \\ v = 16.1554944 \\ \huge \red{ \boxed{v = 16.155 \: m {s}^{ - 1} }} \\$

You might be interested in

How many inches are in 1 mile? (5280ft = 1mi; 12in = 1ft)

7nadin3 [17]

1 mile * 5280 ft * 12 in = 63360 in

There are 63360 inches in one mile

4 0

3 years ago

Read 2 more answers

20 POINTS!!!

notka56 [123]

$\dfrac{2}{\sqrt3\cos x+\sin x}=\sec\left(\dfrac{\pi}{6}-x\right)\\\\\dfrac{2}{\sqrt3\cos x+\sin x}=\dfrac{1}{\cos\left(\dfrac{\pi}{6}-x\right)}\ \ \ \ \ (*)\\----------------\\\\\cos\left(\dfrac{\pi}{6}-x\right)\ \ \ \ |\text{use}\ \cos(x-y)=\cos x\cos y+\sin x\sin y\\\\=\cos\dfrac{\pi}{6}\cos x+\sin\dfrac{\pi}{6}\sin x=\dfrac{\sqrt3}{2}\cos x+\dfrac{1}{2}\sin x=\dfrac{\sqrt3\cos x+\sin x}{2}\\------------------------------$

$(*)\\R_s=\sec\left(\dfrac{\pi}{6}-x\right)=\dfrac{1}{\cos\left(\dfrac{\pi}{6}-x\right)}=\dfrac{1}{\dfrac{\sqrt3\cos x+\sin x}{2}}\\\\=\dfrac{2}{\sqrt3\cos x+\sin x}=L_s$

6 0

3 years ago

Read 2 more answers

PLEASE ANSWER THIS QUESITON !! WILL GIVE BRAINLIEST !!

Scilla [17]

Answer:

Step-by-step explanation:

You can determine the slant height of this cone by forming a right triangle with the radius, and height. Therefore, the slant height is:

sqrt(10^2 + 24^2) = sqrt676 = 26

4 0

3 years ago

Read 2 more answers

The formula for converting the temperature in Fahrenheit to degrees Celsius is given by the formula C=5/9(F-32), where c is the

nikitadnepr [17]

Answer:

(C * 9/5) + 32

Step-by-step explanation:

Basically, going from fahrenheit to celcius, you have to Deduct 32, then multiply by 5/9. So just reverse it, instead, you multiple it by the reciprocal, which is "9/5" then you add 32. Simple. :)

7 0

3 years ago

Sally needs 2 cups of flour to make her cake. She has 1 cups of flour. How much flour will she need to borrow to have enough to

bulgar [2K]

She needs one more cup of flower

7 0

3 years ago

Read 2 more answers