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AleksAgata [21]
3 years ago
15

Olivia spent $18.00 of the $21.00 from

Mathematics
1 answer:
nexus9112 [7]3 years ago
3 0

Answer:

6/7

Step-by-step explanation:

18/21 dollars is simplified when you divide the fraction by 3 on each number. So you get 6/7 of her money was spent.

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Please answer these 5 questions ill give brainliest and give more points after you answer
givi [52]

Answer:

go to the skating rink

Step-by-step explanation:

if multiply 5x 7 you get 35

If you add 35+15 you get 50 which is the amount of money you have. So if you chose the bowling ally you could bring 7 friends

but is you multiply 3x10 that equals 30

Add that by 20 and you get 50

let me know if its right

3 0
3 years ago
Saeed wants to have his birthday at an amusement park with a few of his friends but he can't spend no more then $80. The amuseme
OLEGan [10]

Answer:

T=35X6.50

Step-by-step explanation:

4 0
3 years ago
Find the max and min values of f(x,y,z)=x+y-z on the sphere x^2+y^2+z^2=81
Anton [14]
Using Lagrange multipliers, we have the Lagrangian

L(x,y,z,\lambda)=x+y-z+\lambda(x^2+y^2+z^2-81)

with partial derivatives (set equal to 0)

L_x=1+2\lambda x=0\implies x=-\dfrac1{2\lambda}
L_y=1+2\lambda y=0\implies y=-\dfrac1{2\lambda}
L_z=-1+2\lambda z=0\implies z=\dfrac1{2\lambda}
L_\lambda=x^2+y^2+z^2-81=0\implies x^2+y^2+z^2=81

Substituting the first three equations into the fourth allows us to solve for \lambda:

x^2+y^2+z^2=\dfrac1{4\lambda^2}+\dfrac1{4\lambda^2}+\dfrac1{4\lambda^2}=81\implies\lambda=\pm\dfrac1{6\sqrt3}

For each possible value of \lambda, we get two corresponding critical points at (\mp3\sqrt3,\mp3\sqrt3,\pm3\sqrt3).

At these points, respectively, we get a maximum value of f(3\sqrt3,3\sqrt3,-3\sqrt3)=9\sqrt3 and a minimum value of f(-3\sqrt3,-3\sqrt3,3\sqrt3)=-9\sqrt3.
5 0
3 years ago
(4x+3)+(×-2)+(4x+3)+(x-2)
ahrayia [7]
4x + 3 + x - 2 +4x +3 +x - 2
5x + 1 + 4x + 3 + x - 2
5x + 1 + 5x + 1
10x + 2

6 0
3 years ago
Read 2 more answers
How do you solve and simplify <br> 2/5+1/4+7/10=
Alchen [17]

Hello!

<em><u>Answer: ⇒ 27/20</u></em>

Step-by-step explanation:

\frac{8}{20}+\frac{5}{20}+\frac{14}{20}

Since the denominators are equal, then combine the fractions.

\frac{8+5+14}{20}

Add by the numbers.

8+5+14=27

=\frac{27}{20}

Hope this helps!

Thank you for posting your question at here on brainly.

Have a great day!

-Charlie

4 0
3 years ago
Read 2 more answers
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