Multiply the equation 2x+7y=-1 by -2
add to othe equaiton
4x-3y=-19
<u>-4x-14y=2 +</u>
0x-17y=-17
-17y=-17
divide both sides by -17
y=1
sub back
2x+7y=-1
2x+7(1)=-1
2x+7=-1
minus 7 from both sides
2x=-8
divide both sides by 2
x=-4
x=-4
y=1
(x,y) is normal form
(-4,1) is answer
The complete question is
<span>Matsu wants to measure the dimensions of her vegetable garden. Which unit of measurement should she use to eliminate the need to write the values in scientific notation?
inches
feet
cups
tons
we know that
case a) inches
</span><span>is a measure of length used for small dimensions
</span><span>
case b) feet
</span>is a measure of length commonly used for dimensions of land, rooms, houses, etc.<span>
case c) cups
is not a measure of length
case d) tons
</span>is not a measure of length
<span>
therefore
the answer is the option
feet
</span>
The answer would be 5.22
Hope this help :D
Answer:
1) 1.8 round to tenths
Step-by-step explanation:
To find the mean absolute deviation we follow these steps:
- Find the mean value by adding all data values and dividing by number of data values
- Find the absolute value of the difference between each data value and the mean: | data value – mean. |
- Divide the sum of the absolute values of the differences by the number of data values
1) 4,5,10,8,4,8,7,6
step 1
4+5+10+8+4+8+7+6 / 8 = 6.5
Mean (μ): 6.5
step 2
|4-6.5| + |5-6.5| + |10-6.5| + |8-6.5| + |4-6.5| + |8-6.5| +|7-6.5| + |6-6.5| = 14
step 3
14 / 8 = 1.75
Repeat these steps for other parts.
