2 years ago

I need help with this

Mathematics

1 answer:

Kobotan [32]2 years ago

5 0

The answers are in the picture. Good luck

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How could you calculate each product? Describe the strategy you would use. Then calculate.

VashaNatasha [74]

Hey there!

1. To solve 9 x 5 , I could add the number 9 five times . . .

9 + 9 + 9 + 9 + 9 = 45

9 x 5 = 45 <----

2. I would use the same strategy as the first one, except add the number 8 five times . . .

8 + 8 + 8 + 8 + 8 = 40

8 x 5 = 40 <----

Hope this helps you.
Have a great day!

8 0

2 years ago

What is the value of the expression 4.8x 10^9 / 1.6x 10^3

SVEN [57.7K]

Answer:

3*10^3

Step-by-step explanation:

4.8(10^9)/1.6(10^3)

we can split this equation into

4.8/1.6 * 10^9/10^3

= 3*10^3

8 0

2 years ago

Find the extreme values of f(x y)=xy subject to the constraint x^2 + y^2 -4 = 0

KATRIN_1 [288]

Via Lagrange multipliers:

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

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

$yL_x=y^2+2\lambda xy=0$
$xL_y=x^2+2\lambda xy=0$
$\implies yL_x-xL_y=y^2-x^2=0\implies y^2=x^2$
$\implies x^2+y^2=4=2x^2\implies x^2=2\implies x=\pm\sqrt2\implies y=\pm\sqrt2$

So we have four critical points to consider, $(\sqrt2,\sqrt2),(-\sqrt2,\sqrt2),(\sqrt2,-\sqrt2),(-\sqrt2,-\sqrt2)$ . If both coordinates are positive or both are negative, we get a maximum value of $(\pm\sqrt2)^2=2$ ; otherwise, we get a minimum of $(-\sqrt2)(\sqrt2)=-2$ .

4 0

2 years ago

Simplifly the following question that i have for u 3/8+1/2=

kirill115 [55]

Answer:

4/8

Step-by-step explanation:

4/8

6 0

2 years ago

Read 2 more answers

How to find the value of x un the simplest radical form

Nonamiya [84]

An educated guess
In order to find this you need to use the right triangle formula and multiply the two.

Hope this helps!

8 0

2 years ago