Question

I need help with 18 and 19 please it’s urgent

Answer 1

18. C. $901.

19. A.

Explanation:

18. 850 + 6% of 850

= $850 + 0.06 * 850

= $901.

19. If the triangle is right-angled then c^2 = a^2 + b^2 where c is the hypotenuse and a and b are the legs.

16^2 is not equal to 10^2 + 7^2 ( 256 not = 100 + 49) so it is the first choice.

Answer 2

18. C. $901

19. A. 7 in., 10 in., 16 in.

Explanation:

18.

The price is 100% of the price since 100% means the whole amount.

Tax is 6% of the whole amount. When you add 6% to 100% you get 106%.

The price plus tax is 106% of the original price.

106% of $850 = 106% * $850 = 1.06 * $850 = $901

Answer: C. $901

19.

A. See if a^2 + b^2 equals c^2

a^2 + b^2 =

= 7^2 + 10^2

= 49 + 100

= 149

c^2 = 16^2 = 256

a^2 + b^2 = 149

c^2 = 256

Since a^2 + b^2 is not equal to c^2, the triangle is not a right triangle.

Answer: A. 7 in., 10 in., 16 in.