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lapo4ka [179]
2 years ago
13

In a bag, the ratio of red to blue counters is 3:4.

Mathematics
1 answer:
Elza [17]2 years ago
7 0
R/b = 2/3, so r = 2/3 b
(r-3)/b = 3/5
5(r-3) = 3b
5(2/3 b - 3) = 3b
Just solve for b
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The 13-foot string is arranged into a rectangle. Let L denote the length of the rectangle,
soldi70 [24.7K]

The expressions for the width, W, and area, A, of the rectangle in terms of L are:

  • W = \frac{13}{2} - L
  • A = \frac{13L - L^{2} }{2}

The expression for the perimeter of a rectangle is given as:

P = 2(L + W)

where L is its length and W its width

a. Given that the perimeter of the rectangle is 13 feet, then;

13 = 2(L + W)

divide through by 2

\frac{13}{2} = L + W

So that;

W = \frac{13}{2} - L

The required formula for the width as a function of L is: W = \frac{13}{2} - L

b. Area of a rectangle can be expressed as;

A = L * W

substitute the expression for width in that of area to have

A = L * ( \frac{13}{2} - L)

  = \frac{13}{2}L - L^{2}

A = \frac{13L - L^{2} }{2}

The expression for the area A is: A = \frac{13L - L^{2} }{2}

Visit: brainly.com/question/10452031

5 0
2 years ago
Three tennis balls are packaged in a box as shown below. The box is 12.1 centimeters long, 3.5 centimeters wide, and 3.5 centime
grin007 [14]
The volume is 91.8cm³

7 0
3 years ago
What is the measure of angle R?
Contact [7]

Answer:

whole triangle is 180 degrees find p with 36 and 20 then add p and q and subtract by 180

Step-by-step explanation:

I'm just helping not giving answes

7 0
3 years ago
If f left parenthesis x right parenthesis equals x squared minus 3 x plus 5 , then f left parenthesis 4 right parenthesis equals
lord [1]

Answer:

f(4) = 9

Step-by-step explanation:

f left parenthesis x right parenthesis equals x squared minus 3 x plus 5

f(x) = x² - 3x + 5

f left parenthesis 4 right parenthesis equals

f(4) =

f(x) = x² - 3x + 5

When x = 4

f(4) = 4² - 3(4) + 5

= 16 - 12 + 5

= 9

f(4) = 9

6 0
3 years ago
I need help please ​
WITCHER [35]

Answer:

358in

Step-by-step explanation:

Use CAH or Cos()=(adj/hyp)

So Cos(36)=(290/h)

Re-Write the equation as h=(290/cos(36)) to get 358 inches

5 0
3 years ago
Read 2 more answers
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