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STALIN [3.7K]
3 years ago
15

Sara follows these two steps to prepare a roast:

Mathematics
1 answer:
krok68 [10]3 years ago
4 0

Answer:

  • 20x + 10 = 90
  • 4 pounds

Step-by-step explanation:

Let the number of pounds is x.

<u>Consider the time for preheat and set the equation:</u>

  • 20x + 10 = 90

<u>Solve for x to find the weight:</u>

  • 20x = 90 - 10
  • 20x = 80
  • x = 80/20
  • x = 4
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Sixty students took a math test. The percentages of students who scored an A, B, C, or D are displayed in the circle graph, but
GarryVolchara [31]

Answer:

30

Step-by-step explanation:

8 0
3 years ago
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
3 years ago
K = 2LM + 2LN. Solve for L
Andreas93 [3]
L is 0 because it cancels itself out
6 0
3 years ago
Read 2 more answers
PLEASE HELP I WILL MARK YOU BRAINLIEST. Ms. Simmons is using sticky notes to write reminders to herself. Each sticky note is 5/6
Masja [62]

Answer:

5 square inches

Step-by-step explanation:

First, we need to find the area of one sticky note:

The formula is Lenth*Width

Area of one sticky note:

5/6*2/3=10/18

=5/9 square inches

Now, we find the area of 9 sticky notes:

5/9*9=5

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Hope this helps! Have an amazing day!

7 0
3 years ago
Please can you help me I don't understand
Alexxx [7]
I will show you how to do the first one.....we are finding the GCF...the largest number that goes into each number (same for variables)

1.)  20yx , 80x³  ( factor each number and variable)

20  =  2, 4, 5, 10, 20
y    =  y
x     =  x
80  =  2, 4, 5, 8, 10, 16, 20, 40, 80
x³  =  x, x, x

what is the largest number that 20 and 80 have in common?    20...
how about the variables?    x

so, the Greatest Common Factor (GCF is 20x)
8 0
3 years ago
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