Answer:
5 pieces of 40 cm
Step-by-step explanation:
A Bar of steel is 340 cm long Issa cuts two 55cm lengths of the bar
He then cuts the rest into as many 40cm lengths as possible
Work out how many 40cm lengths of bar Issa cut.
so
340cm - 55 cm - 55 cm = 230 cm remains
<u>230 cm </u>to cut into 40 cm as many as possible
40 cm
therefore, there are 5 pieces of 40 cm
Answer:
-3x-7
Step-by-step explanation:
So firs you would change the sign of +(-1)
-3x-6-1
-3x-7
Answer:
Step-by-step explanation:
Select the correct answer from each drop-down menu.
We solve using z score formula
z-score is z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.
The average time taken to complete a test follows normal probability distribution with a mean of 70 minutes and a standard deviation of 25 minutes.
a) The probability of a randomly selected student completing the test in 45 minutes or less is approximately equal to %.
z = 45 - 70/25
b) The probability of a randomly selected student completing the test in 95 minutes is %.
z = 95 - 70/25
208/100 = 2.8 bc u move the decimal over twice because there are two zeros
Answer:
$24
Step-by-step explanation:
(22-10)=12
12×2=24