How would u solve 7c + 12 = - 4c + 78

24 is. 6% of what number

The mean age of a student book club is 14.2 years. A 27-year-old teacher is invited to join the club. How does the teacher's age affect the mean? A. The new mean age will be 20.6 years. B. The new mean age will be greater than 14.2 years. C.

The dimensions of triangle A are twice the dimensions of triangle B. The area of triangle A is 162 cm2. What is the area of triangle B?

19.9=9y-8 what is y equal to.

Xiao's teacher asked him to rewrite the sum 60+90 as the product of the GCF of the two numbers and a sum. Xiao's wrote 3 (20 + 30). What mistake did Xiao make? How should he have written the sum?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.