Answer:
7/5
Step-by-step explanation:
Slope formula = (y₂ - y₁) / (x₂ - x₁)
= (7 - 0) / (2 - (-3))
= 7 / (2 + 3)
= 7/5
Answer:
I can't see the picture
Step-by-step explanation:
Formula
job/time1 + job / time2 = job / t
job = 1
t = the time for both working together.
t1 = 4 hours
t2 = 6 hours
d = 1 job
1/t1 + 1/t2 = 1/t
1/4 + 1/6 = 1/t
find the lowest common denominator between 6 and 4
4 = 2 * 2
6 = 2 * 3
The lowest common denominator = 2 * 2 * 3 which is 12
3*1 / 4*3 + 2*1 / 2 * 6 = 1/t
3/12 + 2 / 12 = 1/t
5/12 = 1/t Cross multiply
5t = 12 * 1 Divide by 5
t = 12 / 5
t = 2 2/5
t = 2.4 hours.<<<<< answer
Notice that the time is less than 4 hours as it should be.
Divide 132 by 8. You will get the quotient of 16 and the remainder of 4. So each row has 16 projects. The remaining 4 projects cannot be filled completely in a row.
B :81 EXPLANATION
The angle with the greatest measure corresponds to the longest:
Since we know the three side lengths, we use the cosine rule to obtain;
{a}^{2} = {b}^{2} + {c}^{2} - 2bc \cos(A)
where a=21, b=18 and c=14
{21}^{2} = {18}^{2} + {14}^{2} - 2 \times 18 \times 14\cos(A)
44 1= 324+ 196 - 504\cos(A)
44 1= 520 - 504\cos(A)
44 1 - 520 = - 504\cos(A)
- 79 = - 504\cos(A)
\cos(A) = 0.1567
A = \cos ^{ - 1} (0.1567) = 80.98 \degree
