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abruzzese [7]
4 years ago
11

The length of a rectangle is three more than it’s width. The perimeter is 42 inches. Write an equation to find the length and wi

dth.
Is the correct answer
W= 9 in and L= 12in ???
Mathematics
1 answer:
Marina CMI [18]4 years ago
7 0

Answer:

Width = 9 inches , length = 12 inches.

Step-by-step explanation:

Let the width = x inches, then its length x+3 inches.

Perimeter = 2x + 2(x + 3) inches so

2x + 2(x + 3) = 42

4x + 6 = 42

4x = 36

x = 36/4 = 9

So the width is 9 in and length = 9 + 3 = 12 inches.

You are correct.


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What is the ratio 5/7 to 2/7
puteri [66]

Answer: What is the ratio of 7 to 2?

Students learn that a ratio is a comparison of two numbers or quantities. For example, if there are 2 shaded parts of a picture and 7 unshaded parts, the ratio of shaded parts to unshaded parts is 2 to 7. Note that the ratio 2 to 7 can also be written as 2:7 or 2/7

What is the ratio of 7 to 5?

20 : 28

5 : 7 = 20 : 28. And 7 is a fourth of 28.

Step-by-step explanation:

8 0
3 years ago
Find the maximum rate of change of f at the given point and the direction in which it occurs. f(x, y) = 5 sin(xy), (0, 2) maximu
Ahat [919]

Answer with Step-by-step explanation:

We are given that

f(x,y)=5 sinxy

Point=(x,y)=(0,2)

We have to find the maximum rate of change of f at given point.

f_x(x,y)=5ycos(xy)

f_x(0,2)=5(2)cos0=10

f_y(x,y)=5xcosxy

f_y(0,2)=5(0)cos0=0

\Delta f(0,2)=f_x(0,2)+f_y(0,2)=10i+0j

Maximum rate of change of f at point (0,2)=\mid \Delta f(0,2)\mid=\sqrt{x^2+y^2}

Where x=Coefficient of i

y=Coefficient of j

By using the formula

Maximum rate of change of f at point (0,2)=\sqrt{(10)^2+0}=10

Direction of maximum rate of change of f=\Delta\har{f}=\frac{\Delta f(0,2)}{\mid\Delta f(0,2)\mid}=\frac{10i}{10}=i

7 0
3 years ago
Complete the problem <br> 5/10 + 8/100 =
12345 [234]
29/50 or 0.58 is the answer
4 0
3 years ago
Justus samples 3 oranges from each of his trees ,plus an extra 50 oranges from the whole orchard , to judge whether it is time t
Gemiola [76]

let there are x number of trees

Justus samples 3 oranges from one tree

Number of oranges he samples from x trees =3x

Extra oranges =50

total number of oranges = 3x+50

as a function f(x) we can write it as

f(x) =3x+50

6 0
3 years ago
Read 2 more answers
Evaluate the expression begin expression . . . 2 times n, times, the quantity n minus 1 . . . end expression, when n = 3 . A 11
arsen [322]

Answer:

B (12)

Step-by-step explanation:

The expression can be written as the following:

(2n)(n-1)

Let n=3

(2*3)(3-1)=(6)(2)=12

So the answer is B (12).

6 0
3 years ago
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