1. 62 - 3 x 4

2. 42 ÷ (15 - 23)

3. 42 x 2 + 8 x 7

4. 32 + 12 ÷ (6 - 3) x 8

5. (10 + 4) ÷ (26 - 19)

6. (52 - 4) x 2 - 18

HELP ME PLEASE I NEED IT ASAP

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9

The center on a target has a diameter of 5 inches. the whole target has a diameter of 25 inches. complete the explanation for what part of the whole target is the center. the center of the target takes up % of the whole target.