Answer:
Step-by-step explanation:
Let number of chocolate cakes = c
Number of lemon cakes = l
Total cakes = 27
c + l = 27 ---------------(I)
Total slices = 170
7c + 6l = 170 ---------------(II)
Multiply equation (i) by (-7) and then add. So, c will be eliminated and we can find the value of l
(I) * (-7) -7c - 7l = -189
(II) <u>7c + 6l = 170 </u> {Now add}
- l = -19
l = 19
Plugin l = 19 in equation (I)
c + 19 = 27
c = 27 - 19
c = 8
Number of chocolate cakes = 8
Number of lemon cakes = 19
to solve you would have to divide 1 into 8. So using long division the answer would be 0.125
Answer:
In this case, you can simply treat the > sign like an = sign. The only time you would need to worry about is when multiplying or dividing by negative numbers.
2x + 3 > 13
2x + 3 - 3 > 13 - 3
2x > 10
2x / 2 > 10 / 2
x > 5
Answer:
93 pieces
Step-by-step explanation:
To cover his backyard with sod, he needs to cover the area of the backyard.
His backyard is a rectangle, and area of a rectangle is given as:
Where,
is the length, and
is the width
So, the area of Jim's backyard is square yards.
The area of each sods are solved using the area of the rectangle formula. So we have square yards as the area of each sod.
To find HOW MANY of these sods we would need to cover the whole backyard, we divide the backyard area by each sod area:
Since, fractional sods can't be bought, Jim has to buy 93 sods to cover his backyard.
Answer:
13
Step-by-step explanation:
The mean of the data is also known as the average. To find the mean/average, add up all the data and divide it by the number of inputs recorded.
9 + 16 + 13 + 14 + 10 + 16 + 17 + 9 = 104
There are 8 terms.
104 / 8 = 13
The mean is 13.
Hope this helps!
