Answer:
<u>4 minutes</u>
Step-by-step explanation:
40=1 min
40=2 min
40=3 min
40=<u>4</u> min
40x4 or 40+40+40+40 is <u>160</u>
Answer:
25°
Step-by-step explanation:
2x - 5° = x + 20°
2x - x = 20° + 5°
x = 25°
Answer:
288 (DIVIDED) by 23=
12.5217391304 ROUNDED UP=
About 13 students per bus.
Answer:
Step-by-step explanation:
So we have the equation: 
. and I'm assuming you meant to do mixed fractions and not actually multiplying. 2 * 2/3. So the first thing to do is follow PEMDAS which essentially says Parenthesis first, Exponents next, Multiplication or Division, and then Addition or Subtract. So let's start by evaluating the 2 2/3 and 1 1/2. The first step is to combine 2 into the 2/3 and the 1 into 1/2. This is done by multiplying the 2 by the denominator of 3, and adding it to the numerator so: 
. And you do this for the 1/2 as well: 
.
Now when adding fractions, you can only add them when they have the same denominator, so we have the get 3/2 and 8/3 to have the same denominator. You can list the multiplies of 2 and 3 to try to find a LCM, but in this case, I'll just multiply 2 and 3, since they're really small numbers, also because 6 is the LCM. 
. And now do this to the 3/2 you get: 
. Now the inside of the parenthesis is: 
. So now we have the equation: 
. Also notice how I got ride of the plus sign and made it negative? Think of it as having a 1 in front and simply distributing that to the -7, 1*(-7) becomes -7.
Now to multiply the fraction by a whole number you simply multiply the denominator and numerator, and you can think of the denominator of a whole number as a 1. So this gives you: 
. Now we have the equation: 
. And to subtract these two numbers I'll make the 3 1/2 a fraction by multiplying the 3 by the denominator and adding it to the 1 which should become 7/2. And after that multiply both sides by 3/3 to get 21/6 so they have the same denominator. This gives you the equation: 
. Which can simplify by dividing both sides by 2 to get:
