annonomous12 annonomous12

03-06-2019
Mathematics

contestada

Evaluate the expression below when x= -1.
2x2 - 5
X + 9

Respuesta :

vikaminia2013 vikaminia2013

03-06-2019

Answer:

2x^2-5=-3

X+9=8

Step-by-step explanation:

Assuming those are 2 expressions:

2x^2-5

=2(-1)^2-5

=2-5

=-3

X+9

=-1+9

=8

Answer Link

Otras preguntas

Sydney read 50 pages in 40 minutes. She reads at a constant rate.How many pages can Sydney read per minute?

Which graph represents the solution to the system of inequalities? y ≥ x – 5 y < –x + 4

Part complete a 1.15-kg grinding wheel 22.0 cm in diameter is spinning counterclockwise at a rate of 20.0 revolutions per second. when the power to the grinder

Please help with number 10! Thank you

Line ET is tangent to circle A at point T and the measure of angle TNG is 35.

Each of Hashim's comedy shows lasts for 75 minutes. He tells an average of 8 jokes every minute.How many of Hashim's comedy shows does one need to watch to hear

Two long, parallel wires separated by 2.95 cm carry currents in opposite directions. the current in one wire is 1.70 a, and the current in the other is 3.00 a.

How much heat is absorbed to change 13.8 grams of H2O from a solid to a liquid at zero degrees Celsius? ΔHfusion = 6.03 kJ/mol ΔHvaporization = 40.65 kJ/mol

what is the decimal for 63/100?

What is the probability that all the roots of x2 + bx + c = 0 are real? [0,1]?