Jacob has m nails and twice as many bolts as nails. he buys another 20 nails and 30 bolts. find the total number of nails and bolts joacob had now.

21.4 i did it already for s1

step-by-step explanation:

a. -0.3 > -0.33

.632

step-by-step explanation:

6 * 1/10 = 3/5

3*0.01 = 0.03

3/5 + 0.03 = .63

2*0.002 = .002

.63 + 0.002 = .632

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls