Answer:
TRUE
Step-by-step explanation:
Changing the mean by adding the same number to every data value does not change the differences those values have from the new mean. Hence the standard deviation remains unchanged. If it was 6, it will be 6.
The partial products are:
42 x 28 = (40 + 2) x (20 + 8)
42 x 28 = 40 x 20 + 40 x 8 + 2 x 20 + 2 x 8
42 x 28 = 800 + 320 + 40 + 16
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Answer:
t*s i hope this is right
Step-by-step explanation:
1. Selena has to walk <em>to</em> school and <em>from </em>school.
That means that each day, she walks the distance from her house to the school twice.
If she walks 2/3 in a day, the distance must be half of that, or 1/3.
2. 3 batches = 3/4 cup.
Divide each side by 3.
1 batch = 1/4 cup.
3. 5 eighths minus 1 eighth = 4 eighths.
Since we have the same bottom number, we don't need to do anything special. This problem is just the same as something like <em>5 apples - 1 apple.</em>
4. First, let's convert 6 into thirds.
6 × 3 = 18
Therefore, 6 = 18/3.
Add 6 and 2/3.
18/3 + 2/3
20/3
5. To be a composite number, a number needs to be divisible by something besides 1 or itself.
Check your divisibility rules...
39 is divisible by 3 (39 ÷ 3 = 13), so this could be his house number.
6. 12 cupcakes - 9 chocolate = 3 vanilla.
3 vanilla cupcakes out of 12. (3/12)
We can simplify this fraction. 3 and 12 are both divisible by 3.
3/12 = 3÷3 / 12÷3 = 1/4