Step-by-step explanation:
1st digit is 1 number (1)
2nd digit is (3,4,5) so it's 3 numbers
third digit is (6,7,8,9) is it's 4 numbers
last 7 digits is 10 (0,1,2,3,4,5,6,7,8,9)
multiply
1*3*4*10=120
so answer is 120 phone numbers
Answer:

Step-by-step explanation:
Given
j
Required
Express 7 less than 24 * j
First, we have:

7 less is then expressed as:

Answer:
Tables 3 and 5
Step-by-step explanation:
if you know that quadratic equations from curves, then, check out the number patterns on 3 and 5, then, compare them with the others, you'll see
Answer:
646.04 cm³
Step-by-step explanation:
<u>Cube volume formula:</u>
V=l*w*h
V=8*8*8
V=512
<u>Hemisphere volume formula:</u>
V=(4/3πr³)1/2
V=(4/3π4³)1/2
V=128/3
<u>Add both together</u>
128/3 + 512 ≈ 646.04cm³