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Fynjy0 [20]
3 years ago
9

A brand of cereal had 1.21, , 2 milligrams of iron per serving. Then they changed their recipe so they had 1.81 , 8, of iron per

serving. What was the percent increase in iron

Mathematics
2 answers:
Vesna [10]3 years ago
4 0

Step-by-step explanation:

Below is an attachment containing the solution.

sergeinik [125]3 years ago
3 0

Answer:

49.58 percents increase in iron

Step-by-step explanation:

  • Step 1: get the difference between the two cecreals: 1.81 - 1.21 = 0.6 mg

  • Step 2: divide the difference by the original number and then multiply the quotient by 100 to get the percentage % of increase = (0.6/1.21) * 100 = 49.58%

So there are 49.58 percents increase in iron

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Solve for equation √-5p=√24-p
blsea [12.9K]

Answer:


Step-by-step explanation:

Algebra Calculator | Latest | Discuss | About | Help | Translation

25,219,829 solved | 850 online

p2-5p-24=0  

Two solutions were found :

    p = 8

    p = -3  

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "p2"   was replaced by   "p^2".  

Step by step solution :

Step  1  :

Trying to factor by splitting the middle term

1.1     Factoring  p2-5p-24  

The first term is,  p2  its coefficient is  1 .

The middle term is,  -5p  its coefficient is  -5 .

The last term, "the constant", is  -24  

Step-1 : Multiply the coefficient of the first term by the constant   1 • -24 = -24  

Step-2 : Find two factors of  -24  whose sum equals the coefficient of the middle term, which is   -5 .

      -24     +     1     =     -23  

      -12     +     2     =     -10  

      -8     +     3     =     -5     That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -8  and  3  

                    p2 - 8p + 3p - 24

Step-4 : Add up the first 2 terms, pulling out like factors :

                   p • (p-8)

             Add up the last 2 terms, pulling out common factors :

                   3 • (p-8)

Step-5 : Add up the four terms of step 4 :

                   (p+3)  •  (p-8)

            Which is the desired factorization

Equation at the end of step  1  :

 (p + 3) • (p - 8)  = 0  

Step  2  :

Theory - Roots of a product :

2.1    A product of several terms equals zero.  

When a product of two or more terms equals zero, then at least one of the terms must be zero.  

We shall now solve each term = 0 separately  

In other words, we are going to solve as many equations as there are terms in the product  

Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation :

2.2      Solve  :    p+3 = 0  

Subtract  3  from both sides of the equation :  

                     p = -3

Solving a Single Variable Equation :

2.3      Solve  :    p-8 = 0  

Add  8  to both sides of the equation :  

                     p = 8

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3 years ago
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borishaifa [10]

Answer:

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Step-by-step explanation:

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GREYUIT [131]
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2 years ago
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sdas [7]

Answer:

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Step-by-step explanation:

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