2 years ago

Evaluate the polynomial when x=4 y=-4 x^2-3y^2+2xy

1 answer:

4 0

$x^2-3y^2+2xy\\\\for\ x=4\ and\ y=-4\\\\substitute\ the\ values\ of\ x\ and\ y:\\\\4^2-3\cdot(-4)^2+2\cdot4\cdot(-4)=16-3\cdpt16-32=16-48-32=-64$

You might be interested in

Look at this sphere:

ANEK [815]

In the equation for surface area the radius is squared ( r^2)

If the radius is doubled, the radius would be 2^2 more which equals 4

The surface area would be 4 times the old surface area.

3 0

2 years ago

Simplify (x^6)(x^2)?

MArishka [77]

just sum the 2 power

6 + 2 = 8

x^8

3 0

2 years ago

Read 2 more answers

HELP DUE IN 10 MINS!<br><br> x =??

Black_prince [1.1K]

Answer:

x = 11

Step-by-step explanation:

Using Secants ad Segments Theorem we can say;

(x + 7) (7) = (15 + 6) (6)

7x + 49 = (21) (6)

7x + 49 = 126

7x = 77

x = 11

Hope this helps!

3 0

2 years ago

Read 2 more answers

Area and perimeter of geometric functions

SCORPION-xisa [38]

Answer:

C. 60

Step-by-step explanation:

From triangle ADB,

$|AD|^2+|BD|^2=|AB|^2$

$|AD|^2+16^2=20^2$

$|AD|^2=20^2-16^2$

$|AD|^2=400-256$

$|AD|^2=144$

$|AD|=\sqrt{144}$

$|AD|=12$

From triangle ADC,

$|CD|^2+12^2=15^2$

$|CD|^2+144=225$

$|CD|^2=225-144$

$|CD|^2=81$

$|CD|=9$

The perimeter is the distance around the figure.

The perimeter

$=15+20+16+9$

$=60$

8 0

3 years ago

Read 2 more answers

Write the expression that shows "3 times the sixth power of 10"

Fantom [35]

3 x 10^6. It looks funny on here but the exponent of 6 goes with 10.

3 0

2 years ago