Answer:
16.8 + (-18.6)
Step-by-step explanation:
A subtraction symbol and adding a negative are the same
Solve the 2 equations then if : X and Y are positive then it is the first quad
if X is negative and Y is positive then it is in second quad
if X is negative and Y is negative then it is 3rd quad
if X is positive and Y is negative then it is the 4th quad
(look at the signs of numbers solved by the equation)
Answer:4. BC DE
6. plane t
Step-by-step explanation:
It would be C because the numerator is being multiplied by 4 and the denominator is being multiplied by 5
Answer: 1) 150 square cm
2) 70.71 square cm
Step-by-step explanation:
1) Here, the side of the cube = 5 cm,
Also, the surface area of a cube =
Thus, the surface area of the given cube =
= 6 × 25
= 150 square cm,
Thus, the total area which is painted = 150 square cm,
2) Since, After cutting the cube along the diagonal we get two prism that having rectangular base that is not covered by paint,
And, the dimension of the base of a prism after cutting the square = 7.071 cm × 5 cm,
Thus, the area of the base of the prism = 7.071 × 5 = 35.355 square cm
⇒ The total area of bases of the two prisms after cutting that is not covered by paint = 2 × 35.355 = 70.71 square cm