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worty [1.4K]
3 years ago
10

A room has a length of 12.62 ft and a width of 10.2 ft. Find the perimeter of the room with the correct number of significant di

gits.
Mathematics
1 answer:
marusya05 [52]3 years ago
5 0

Answer:

45.6 ft

Step-by-step explanation:

The room is a rectangle. The perimeter of a rectangle is

perimeter = 2L + 2W

perimeter = 2(12.62 ft) + 2(10.2 ft)

perimeter = 25.24 ft + 20.4 ft

perimeter = 45.64 ft

Since 10.2 ft has only 3 significant digits, the answer must also have only 3 significant digits.

Answer: perimeter = 45.6 ft

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What is 5/2 divided by 2/5
Len [333]

Answer: 6 and 1/4

Step-by-step explanation: To solve this problem, we first leave 5/2 alone so don't do anything to it.

For our second fraction, we want to switch the numerator and the

denominator which means find the reciprocal of it.

The reciprocal of 2/5 is just the opposite of it when

you flip it and it's going to be 5/2.

Because we did the opposite there, we need to do the opposite

of division and the opposite of division is multiplication.

So now we have 5/2 × 5/2 which is 25/4 or 6 and 1/4.

6 0
3 years ago
Solve for M MUST SHOW WORK!!!<br> 2 = m/2 - 7<br><br> M=???
elena-s [515]

Answer:

2 =  \frac{m}{2}  - 7 \\  \frac{m}{2}  = 9 \\ m = 2 \times 9 \\  \boxed{m = 18}

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7 0
3 years ago
There are 59 people going on a field trip.
laila [671]

The answer to this question is the school is going to have to rent 2 vans extra. The reason is because each van hols 8 people right. for the 6 vans that the school already owns, that will be 48 students in vans. When you subract that from 59, you get 11 students that still need a van, so 11 students can not fit in one extra van so the school would need two. Hope this gives you what you were looking for. God bless, and hope this helped. Also, please let me know if it was correct.

6 0
3 years ago
The ratio table shows the costs for different amounts of bird seed. Find the unit rate in dollars per pound.
Maru [420]

Answer:

2.3 dollars

Step-by-step explanation:

Given:

Ratio table that shows the costs for different amounts of bird seed

To find: the unit rate in dollars per pound

Solution:

Amount (pounds)   5       10      15        20

Cost (dollars)         11.5   23    34.50    46

Here,

\frac{5}{11.5}=\frac{50}{115}=\frac{10}{23}\\\\\frac{10}{23}=\frac{10}{23}\\\\\frac{15}{34.50}=\frac{1500}{3450}=\frac{150}{345}=\frac{30}{69}=\frac{10}{23}\\\\\frac{20}{46}=\frac{10}{23}

Therefore,

\frac{5}{11.5}=\frac{10}{23}=\frac{15}{34.50}=\frac{20}{46}

Cost of 10 pounds = 23 dollars

So, cost of 1 pound = \frac{23}{10}=2.3 dollars

6 0
3 years ago
X=-3<br> A. 64<br> B. 8<br> C. 4<br> D. 16
stepan [7]

Answer:

The answer is A.

Step-by-step explanation:

I took the test

8 0
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