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uranmaximum [27]
3 years ago
7

What does 7+7 divided by 7+7*7-7

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
3 0
Im pretty sure that it is 50
tatuchka [14]3 years ago
3 0

Answer:

2/7

Step-by-step explanation:

7+7/7+(7)(7)−7

=14/7+(7)(7)−7

=14/7+49−7

=14/56−7

=14/49

=2/7

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A banana has 80 calories. This is 5 calories less than one seventh of the calories in a banana split. How many calories in a ban
viva [34]
The answer is 85 times 7. Since the banana was 5 less then the split, the split is 5 more which is 85 calories but then it says it is also 1/7 of the whole split. So you simply multiply 85 and 7 because 85 was only 1/7 of the total banana split
4 0
4 years ago
Read 2 more answers
Use the Chain Rule to find the indicated partial derivatives. u = x2 + yz, x = pr cos(θ), y = pr sin(θ), z = p + r; (partial u)/
devlian [24]

u(x,y,z)=x^2+yz

\begin{cases}x(p,r,\theta)=pr\cos\theta\\y(p,r,\theta)=pr\sin\theta\\z(p,r,\theta)=p+r\end{cases}

At the point (p,r,\theta)=(2,2,0), we have

\begin{cases}x(2,2,0)=4\\y(2,2,0)=0\\z(2,2,0)=4\end{cases}

Denote by f_x:=\dfrac{\partial f}{\partial x} the partial derivative of a function f with respect to the variable x. We have

\begin{cases}u_x=2x\\u_y=z\\u_z=y\end{cases}

The Jacobian is

\begin{bmatrix}x_p&x_r&x_\theta\\y_p&y_r&y_\theta\\z_p&z_r&z_\theta\end{bmatrix}=\begin{bmatrix}r\cos\theta&p\cos\theta&-pr\sin\theta\\r\sin\theta&p\sin\theta&pr\cos\theta\\1&1&0\end{bmatrix}

By the chain rule,

u_p=u_xx_p+u_yy_p+u_zz_p=2xr\cos\theta+zr\sin\theta+y

u_p(2,2,0)=2\cdot4\cdot2\cos0+4\cdot2\sin0+0\implies\boxed{u_p(2,2,0)=16}

u_r=u_xx_r+u_yy_r+u_zz_r=2xp\cos\theta+zp\sin\theta+y

u_r(2,2,0)=2\cdot4\cdot2\cos0+4\cdot2\sin0+0\implies\boxed{u_r(2,2,0)=16}

u_\theta=u_xx_\theta+u_yy_\theta+u_zz_\theta=-2xpr\sin\theta+zpr\cos\theta

u_\theta(2,2,0)=-2\cdot4\cdot2\cdot2\sin0+4\cdot2\cdot2\cos0\implies\boxed{u_\theta(2,2,0)=16}

7 0
3 years ago
A regular 40-sided polygon is rotated with its center of rotation at its center. What is the smallest degree of rotation needed
mina [271]
Hey! the answer would be A regular 40-sided polygon has an interior angle equal to:
(40 - 2) (180) /40 = 171 degrees

The interior angle is also the smallest angle that is needed to  rotate the polygon and map it unto itself. So, the smallest degree of rotation needed to map the polygon back to itself is 171 degrees.






8 0
4 years ago
Why do people answer randomly and waste the person that asked the question's points
Komok [63]

Answer:

I think most of the time it might be bots or the person might not know the answer and simply want the points, if you have a question I can take a look at it though.

5 0
3 years ago
Read 2 more answers
Why is the quotient of three divided by one-fifth different from the quotient of one-fifth divided by three?
aksik [14]
We write the expressions first mathematically:
 three divided by one-fifth:
 (3) / (1/5)
 one-fifth divided by three:
 (1/5) / (3)
 We now use the double c method to find the results:
 (3) / (1/5) = (3 * 5) / (1 * 1) = 15/1 = 15
 (1/5) / (3) = (1 * 1) / (5 * 3) = 1/15 = 0.066666667
 The difference between the two is:
 15-0.066666667 = 14.93333333
 Answer 
 They are different because they are inverse expressions.
7 0
3 years ago
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