Answer: B
Step-by-step explanation:
Answer:
15 maybe?
Step-by-step explanation:
42 - 14 = 28
18 - 5 = 13
28 - 13 = 15
subtract the 14 because it says it is in neither.
Subtract 5 from 18 because 18 are in math and only 5 are in both math and science.
Subtract 13 from the 28 because those 13 are in math and wont be in science also.
Thirty six divided by four is equal to nine
Answer:
78 square inches
Step-by-step explanation:
It is given that the length of the glass triangular prism for a telescope=5.5 inches, sides of the triangular prism = 4 inches and height =3 inches.
Thus, Surface area of the triangular prism =
where H is the length of the triangular prism.
SA=
=
=78 square inches.
Answer: 20,-13
Step-by-step explanation:
We can rewrite the problem as an equation. This equation is x(x-7)=260 (x being the mystery number). We can simply this into x^2 -7x=260. We can then rewrite this as x^2 -7x -260=0. We need to find the roots of this quadratic, which are -13 and 20. You can find this by factoring the quadratic.
