saralAdhikari saralAdhikari

24-08-2020
Mathematics

contestada

X + Y is equal to 5 x minus Y is equal to 4 find the value of find the value of x square minus y square

Respuesta :

eunice1234 eunice1234

24-08-2020

Answer: 20

Step-by-step explanation:

x+y=5

x-y=4

---------

x+y=5

x=4+y

--------

(4+y)+y=5

4+y+y=5

4+2y=5

2y=1

y=0.5

x=4.5

---------

x²-y²=(4.5)²-(0.5)²=20.25-0.25=20

Answer Link

Otras preguntas

The equation h(t)=−16t2+19t+110 gives the height of a rock, in feet, t seconds after it is thrown from a cliff. What is the initial velocity when the rock is t

In what was did the period between 1890 and 1945 shape the political, social, and cultural identity of the united states

2x+3y=6 convert from standard form to slope intercept , show all steps

Which of the following is a benefit of a 529 plan

was Arizona a state by 1900

Complete the similarity statement for the two triangles shown.

Iron deficiency is one of the most common nutritional deficiencies in premenopausal women. Iron is a vital part of hemoglobin, which carries oxygen to red blood

A triangle has the following coordinates: (-15, 10), (0, -20), and (15, 0). Which of these points will not change if the figure were reflected over the x-axis?

three students went out for lunch in a restaurant Sophie ordered the business special for $8.50 Lauren ordered a full meal with dessert for $10.25 Mike ordered

Why were Democrats angry after the presidential election of 1876? Democrats believed that their candidate had actually won. Democrats thought that the voting sy