Increased by 12 means plus 12. The word "is" in equations is an equal sign. So far, you have 2n+12. On the other side of the equal sign, you have 31 less than 3 times a number.

3 0

3 years ago

Solve the 3D figure Rectangle is A=BH<br> Triangle is A=1/2BH

IceJOKER [234]

Answer:

The area of the 3d figure

Step-by-step explanation:

the area of the one of triangle is 8.7

and the reactangle is 5 x 7 = 35

and the big one is 10 x 7 = 70

so 8.7 + 8.7 + 35 + 35 + 70 = 157.4

7 0

2 years ago

F(x) = 2x² + 2, find f(5).?

Romashka-Z-Leto [24]

Answer:

sorry if i got it wrong but i think its 22 if f5

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Use the intersect method to solve the equation x^2-1=-x^2+7

olga55 [171]

Answer:

The solutions of the equation x^2-1=-x^2+7 are (-2,3) and (2,3)

Step-by-step explanation:

Please, see the attached file.

Thanks.

4 0

2 years ago