1. true.
2. false.
3. false.
4. true.
these should be correct.
The amount of work done by Kalon in an hour is equal to 1/4. This is based on his time to finish the job. Letting x be the number of hours Marna can finish the job alone will let her finish 1/x of the job in an hour. If their rates are added together and multiplied by the number of hours they worked together, the product should be one whole job.
(1/4 + 1/x)(1 5/7) = 1
The value of x is 3. Therefore, it will take 3 hours for Marna to clean the chimney alone.
Answer:
angles 1, 3, 6, 8 = 142°
angles 2, 4, 5, 7 = 38°
Step-by-step explanation:
Vertical angles and corresponding angles are congruent, as are alternate interior angles. Hence the angles 1, 3, 6, 8 are all congruent:
∠1 = ∠3 = ∠6 = ∠8 = 142°
Each of the remaining angles forms a linear pair with one or another of those, so is its supplement:
∠2 = ∠4 = ∠5 = ∠7 = 180° -142° = 38°
Answer:
$75,000
Step-by-step explanation:
Let
x ----> amount lent for product X
y ---->amount lent for product Y
we know that
A bank lent $200,500 for the development of two products
so
----> equation A
The loan for product X was for $50,500 more than that for product Y
so
----> equation B
substitute equation B in equation A

solve for y

2x2(2x+1)(2x-1) this is the answer I got.