Answer:
Lacy is 14 and Jack is 56
Step-by-step explanation:
Answer: 81%
Step-by-step explanation:
From the question, we are informed that a student received the following test scores: 71%, 89%, 72%,
84% and 83% in 5 tests and the student wants to maintain an average of 80%.
The lowest score/grade they can receive on the next test to maintain at least an 80% average first thus:
First, to make it easy we can remove the percent sign. Then we multiply 80 by 6 since we're calculating for 6 tests scores. This will be:
= 80 × 6
= 480
We then add all the 5 test scores. This will be:
= 71 + 89 + 72 + 84 + 83
= 399
We then subtract the values gotten. This will be:
= 480 - 399
= 81
This means the student must get at least 81%
21.5 means 21 and 5 tenths and is read that way.
21.5 = 21 5/10 =(21*10 + 5) /10 = 215/10 = 43/2 in simplest terms
Please leave out "suck at math" comments; such a comment helps no one, least of all you.
<span>7x + 1 < 4(x - 2)
Distribute that multiplier 4: </span><span>7x + 1 < 4x - 8
Subtr. 4x from both sides: 3x + 1 < -8
Subtr. 1 from both sides: 3x < - 9
Divide both sides by 3: x < -3 (answer)</span>
The correct answer is 1365 ft
Explanation:
The volume refers to the space a body occupies, in the case of the bin made by Lauren this is composed of two rectangular prisms (one in the front and one in the back). Additionally, the volume of each prism can be calculated by multiplying the height, length, and width this means Volume= H x L x W.
According to this, the volume of the front rectangular prism is 735 considering 7ft (H) x 21ft (L) x 5ft (W) = 735 and the volume of the rectangular prism in the back is 630 considering the height of this is 3ft more than the one in the front this means the heigh is 10ft and 10ft (H) x 21ft (L) x 3ft (W) = 630. Finally, it is necessary to add the two volumes to find the total volume, thus 630+ 735 is equivalent to 1365 ft, which is the volume of all the bin.