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Goryan [66]
3 years ago
13

A rectangle is three times as long as it’s wired the perimeter 60 cm find the dimensions of the rectangle a round to the nearest

10th if necessary
Mathematics
1 answer:
ipn [44]3 years ago
6 0

Answer:

  width:  7.5

  length: 22.5

Step-by-step explanation:

width:  x

length: 3x

Perimeter = 2L + 2W

60 = 2(3x) + 2x

60 = 6x + 2x

60 = 8x

x = 7.5

width:  x = 7.5

length: 3x = 3(7.5) = 22.5

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2. Find the measure of angle A to the nearest degree.
pav-90 [236]

Answer:

37°

Step-by-step explanation:

we're going to use cosine rule In calculating for the value of angle A

note that cosine rule can be used when two sides are given with an included angle . from the diagram above, the two sides given are side AB and side AC and the included angle is A

Hence cosine rule

a^2 = AB^2+AC^2 - 2AB×AC Cos A

3.2^2= 2.1^2+4.6^2-2×2.1×4.6COSA

10.24 =4.41+21.16- 19.32 COSA

10.24 = 25.57-19.32COSA

10.24-25.57= -19.32COSA

-15.33= -19.32COSA

dividing bothsides by - 19.32

COSA= -15.33/19.32

COA= 0.79347826

A = COS^-1 (0.79347826)

A= 37.488

A= 37°

<h2>hope this helps!!</h2>
7 0
2 years ago
What is the value of the expression?
Kamila [148]
Must do multiplication first....
-2/5 - 3/7 x 7/10
-2/5 - 21/70 (I'll reduce 21/70)
-2/5 - 3/10
Now you have to find a common denominator and subtract
-35/50 = -7/10......is what I get
7 0
3 years ago
Landon, Wes, and Tim attempted 25 basketball shots each.HELP ASAP
Flura [38]
Wes made the most shots.
Explanation.
Landon made 9 shots
Wes made 10 shots
Tim made 8 shots.
HAVE A GUD DAY
3 0
3 years ago
Read 2 more answers
Please need HELP????????????<br> THIS IS DO TODAY IN ONE HOUR PLEASE HELP
ExtremeBDS [4]

Answer:-0.2

Step-by-step explanation:

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4 0
3 years ago
The cost C, in dollars, to have medical records transcribed is a function of time, t in hours. A physician's group spends C(t) =
Contact [7]

Answer:

B. $39550

Step-by-step explanation:

The expression for the function is not well-formatted, find the correct format in the solution bellow

Step one:

given data

We are told that the function of the cost is

C(t) = 0.04t^3- 0.1t^2 + 5.5t

instantaneous rate c(t) is the value obtained when we plug in 100 for t in the function above

substituting we have

C(t) = 0.04(100)^3- 0.1(100)^2 + 5.5(100)\\\\\C(t) = 0.04*1000000- 0.1*10000 + 5.5*100\\\\C(t) = 40000-1000+550\\\\C(t) = 39550

$39550

3 0
2 years ago
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