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SCORPION-xisa [38]
3 years ago
11

Evaluate x+(x^2-xy)-y if x=8 and y=5

Mathematics
2 answers:
rewona [7]3 years ago
7 0

Answer:

27

Step-by-step explanation:

8+(8^2-8*5)-5

8+64-40-5

72-45

27

oksano4ka [1.4K]3 years ago
6 0

Answer:

27

Step-by-step explanation:

8 + [8^2- (8x5)] -5

=27

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HELP ILL GIVE 50 POINTS.!!
Jet001 [13]

Using the equation y = abx , substitute both of your given points into that equation.

2 = ab2 and 4 = ab3 Solve each equation for a.

2⁄b2 and 4⁄b3 = a Therefore, 2⁄b2 = 4⁄b3

Cross multiply: 2b3 = 4b2 Divide both sides by b2

2b = 4 a = 2/4 = 1/2

b = 2

y = 1 (2)x

2 hopefully this helped.

6 0
3 years ago
Read 2 more answers
Un ascensor sube desde el primer piso al quinto piso, baja al segundo, sube al octavo. Si cada piso tiene 3 metros de altura, ¿c
german

Answer:

El ascensor recorrió unos 39 metros

Step-by-step explanation:

Segun la pregunta cada cada piso tiene 3 metros de altura, por lo tanto para calcular los metros que recorrió el ascensor tenemos que hacer el siguiente calculo:

metros desde el primer piso al quinto piso=3 metros*4=12 metros

metros desde el quinto piso al segundo piso=3 metros*3=9 metros

metros desde el segundo piso al octavo piso=3 metros*6=18 metros

Por lo tanto los metros que recorrió el ascensor=12 metros+9 metros+18 metros

metros que recorrió el ascensor=39 metros

El ascensor recorrió unos 39 metros

8 0
3 years ago
I NEED HELP PLEASE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
lozanna [386]

Answer:

2.1

Step-by-step explanation:

5 0
3 years ago
Simplify the expression:<br> 4n + 7 +6
Elan Coil [88]

Answer:

4n+13

Step-by-step explanation:

combine like terms.

8 0
3 years ago
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Please, guys, help me out.
Maru [420]

Answer:

First we need to calculate ∠R

Since ∠R is one of three angles of ΔRDJ, we have:

∠R + ∠D + ∠J = 180°

∠R                   = 180° - ∠D - ∠J

∠R                   = 180° - 83° - 39° = 58°

Since ΔRDJ ~ ΔTRB, we can con conclude that:

∠R = ∠T

Because ∠R = 58°

=> ∠T = 58°

7 0
3 years ago
Read 2 more answers
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