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mylen [45]
3 years ago
13

Can someone please help me on these two questions.

Mathematics
1 answer:
Valentin [98]3 years ago
5 0
What are the questions
You might be interested in
O.9c + 1.89r = 17.01 c=18.9 - 2.1r equation answer
ikadub [295]

Answer:

c=18.90-2.1r

Step-by-step explanation:

<u><em>The complete question is</em></u>

A chef bought $17.01 worth of ribs and chicken. Ribs cost 1.89 per pound and chicken costs 0.90 per  pound. The equation 0.90 +1.89r = 17.01 represents the relationship between the quantities in this  situation.

Show that each of the following equations is equivalent to 0.9c + 1.89r = 17.01.

Then, explain when it might be helpful to write the equation in these forms.

a. c=18.9-2.1r. b. r= -10÷2c+9​

we have that

The linear equation in standard form is

0.90c+1.89r=17.01

where

c is the pounds of chicken

r is the pounds of ribs

step 1

Solve the equation for c

That means ----> isolate the variable c

Subtract 1.89r both sides

0.90c=17.01-1.89r

Divide by 0.90 both sides

c=(17.01-1.89r)/0.90

Simplify

c=18.90-2.1r

step 2

Solve the equation for r

That means ----> isolate the variable r

Subtract 0.90c both sides

1.89r=17.01-0.90c

Divide by 1.89 both sides

r=(17.01-0.90c)/1.89

Simplify

r=9-0.48c

therefore

The equation c=18.90-2.1r is equivalent

The equation is helpful, because if I want to know the number of pounds of chicken, I just need to substitute the number of pounds of ribs in the equation to get the result.

4 0
3 years ago
The tape diagram represents an equation.
elena-s [515]

Answer:1.75 = 5n

Step-by-step explanation:

5 0
3 years ago
Rectangle measures 10 inches by 5 inches. Rectangle B is a scaled copy of Rectangle Select all of the measurement pairs that cou
Reika [66]

Answer:

I would help but the thing is there is no options so sorry man

Step-by-step explanation:

4 0
2 years ago
What are the different ways of the simulation indicates when an equation is balanced?
yKpoI14uk [10]

When an equation is balanced, the different ways that the simulation indicates are as follows:

- Happy Face appears

- The scales are balanced

- Pictures show same kind of atoms in reactants and products

- Pictures show same number of atoms in reactants and products

5 0
3 years ago
Read 2 more answers
What's the scientific notation of 0.000000109
Over [174]
0.000000109 in scientific notation will look as it follows:

1.09 * 10^-7

or
<span>
1.09 E-7

It's the same as 1.09 * (-10000000)

I hope it'll give you some clue of scientific notation with decimals.</span>
5 0
3 years ago
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