All categories

2 years ago

If x=-3 , y= -4, find x2 +y2 and x2 – y2

Mathematics

2 answers:

levacccp [35]2 years ago

7 0

Step-by-step explanation:

yesss that's rightttttttt

yan [13]2 years ago

5 0

Answer:

x^2+y^2 = 9+16 = 25

x^2-y^2 = 9-16 = -7

You might be interested in

Find the area of the shaded region in square units. Show your reasoning.

motikmotik

Answer:

40 square units

Step-by-step explanation:

First of all, lets say that square has side $l$ , so, the area unit is $l^2$

the diagonal's square is $l\sqrt{2}$

CALCULATION OF TRIANGLES'S AREA (there are 4 triangles)

$A_{triangles}=4*base*heigh*0.5=2*(l\sqrt{2} )(2l\sqrt{2} )=8l^2$

CALCULATION OF MAIN SQUARE AREA

$A_{square}=side*side=(4\sqrt{2} l)(4\sqrt{2} l)=32l^2$

TOTAL AREA

$A_{total}=A_{triangles}+A_{square}=8l^2+32l^2=40l^2$

3 0

3 years ago

Given the polynomial x7y³ + 2x5y² - 3x³ - 2x4 -2, its degree is equal to?

denis-greek [22]

Answer:

Step-by-step explanation:

its always the highest exponet

4 0

3 years ago

What is |-3+45-(-14)|+(-|-87+12/46| simplified

USPshnik [31]

|x|=absoulte value of x which means whatever x is, make it positive
so first solve any division/multiplication

the only one is 12/46=6/23
so we do the absoulte value signs
-3+45-(-14)
-(-14)=+14
-3+45+14=56
absoulute value of 56=56

56+(-|-87+6/23|)
-87+6/23=-86 and 17/23
absoulte value of -86 and 17/23=86 and 17/23
there is a negative sign in front of the absoulte vaulue so make it negative
56-86 and 17/23=-30 and 17/23 or about -30.73913

4 0

3 years ago

Y=_x+4 x + 2y = 8 How many solutions dose this linear system have

jeyben [28]

Answer:

X=-1, y=4

Step-by-step explanation:

$y = x + 4 \\ x + 2y = 8 \\ = = = = = = = = = = = = \\ y - x = 4 \\ x + 2y = 8$

by using eliminating property

$3y = 12 \\ y = \frac{12}{3} = 4$

by substitution

X=-1

6 0

3 years ago

Aquelyn’s earning m are a function of the number of lawns n she mows at a rate of $12 per lawn

nekit [7.7K]

Answer:

m = 12n

Step-by-step explanation:

M is the amount that she would earn at the end of the day. She charges 12 dollars per lawn and then you multiply that by n which is going to be how many lawns she mowed.

4 0

2 years ago