3 years ago

Help me solve this equation

Mathematics

1 answer:

klio [65]3 years ago

7 0

Answer:

9 is the value of a in the equation

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Incorrect 00:00 Evaluate the expression for x = 1.7. Enter your answer in the box. х2 + 3x

IrinaK [193]

Answer:

7.99

Step-by-step explanation:

x^2 +3x

Let x=1.7

(1.7)^2 +3(1.7)

2.89+5.1

7.99

5 0

2 years ago

cual de dos amigo come más pizza:el que come la cinco sextas partes de la mitad de pizza,o el que come las tres cuartas partes d

Harrizon [31]

Answer:

la persona que comió cinco sextos comió más pizza

Step-by-step explanation:

6 0

2 years ago

Describe and correct the error in solving the equation<br><br> 7 - 3x = 12<br> 4x = 12<br> x = 3

aev [14]

If x=3
Just replace the X with 3
So seven minus three equals four
If 3 is X than do 4 times 3 which that makes twelve.

3 0

3 years ago

Use Lagrange multipliers to find the maximum and minimum values of

marusya05 [52]

The Lagrangian is

$L(x,y,\lambda)=x+8y+\lambda(x^2+y^2-4)$

It has critical points where the first order derivatives vanish:

$L_x=1+2\lambda x=0\implies\lambda=-\dfrac1{2x}$

$L_y=8+2\lambda y=0\implies\lambda=-\dfrac4y$

$L_\lambda=x^2+y^2-4=0$

From the first two equations we get

$-\dfrac1{2x}=-\dfrac4y\implies y=8x$

Then

$x^2+y^2=65x^2=4\implies x=\pm\dfrac2{\sqrt{65}}\implies y=\pm\dfrac{16}{\sqrt{65}}$

At these critical points, we have

$f\left(\dfrac2{\sqrt{65}},\dfrac{16}{\sqrt{65}}\right)=2\sqrt{65}\approx16.125$ (maximum)

$f\left(-\dfrac2{\sqrt{65}},-\dfrac{16}{\sqrt{65}}\right)=-2\sqrt{65}\approx-16.125$ (minimum)

5 0

3 years ago

The swimming pool is opening hours a day the pool manager must divide pool time equally among five groups camp; camp swim team,

ale4655 [162]

Answer:

1.6 hours

Step-by-step explanation:

Number of opening hours a day = 8

Number of groups = 5

Dividing the number of opening. Hours equally among the 5 groups :

8 hours / 5

= 1.6 hours per group per day

4 0

2 years ago