Solve the equation -4(1.75 + x) = 18. Show your work

9514 1404 393

  x = -6.25

Step-by-step explanation:

Eliminate parentheses using the distributive property.

  -7 -4x = 18

Add 7 to get the x-term by itself.

  -4x = 25

Divide by the coefficient of x.

  x = 25/-4

  x = -6.25

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.