Please answer the following question. C-1=3/4

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:

The complete question is

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

Juanita begins to factor an expression as shown. x2+3x−18=(x+)(x−) What numbers should be placed in the boxes from left to right

stich3 [128]

Answer:

Option A is the correct answer.

Step-by-step explanation:

Here we need to factorize x²+3x−18

The coefficient of x is 3 and the constant is -18

Which means

The sum of factors is 3

The product of factors is -18

The factors satisfying are 6 and -3

Here the factors are given in the type (x+)(x−)

So the value after plus is 6 and value after - is 3

Option A is the correct answer.

6 0

3 years ago

Read 2 more answers

Calculate the area of a circle with a diameter of 6cm

7nadin3 [17]

Area of circle = πd²/4, where d = diameter

= π*6*6/4 = 9π ≈ 9 *3.1416 ≈ 28.2744 cm²

Area ≈ 28.27 cm²

Hope this explains it.

4 0

3 years ago

Read 2 more answers

In two or more complete sentences, explain how to solve the cube root equation, <img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B3

nordsb [41]

Isolate the root expression:

$\sqrt[3]{x+1}+2=0\implies\sqrt[3]{x+1}=-2$

Take the third power of both sides:

$\sqrt[3]{x+1}=-2\implies(\sqrt[3]{x+1})^3=(-2)^3$

Simplify:

$(\sqrt[3]{x+1})^3=(-2)^3\implies x+1=-8$

Isolate and solve for $x$ :

$x=-9$

Since the cube root function is bijective, we know this won't be an extraneous solution, but it doesn't hurt to verify that this is correct. When $x=-9$ , we have

$\sqrt[3]{-9+1}=\sqrt[3]{-8}=\sqrt[3]{(-2)^3}=-2$

as required.

5 0

3 years ago

SAVE ME HELPPPPPPPP

valentina_108 [34]

Answer:

By changing 0.65 miles into fraction we got 65/100 and it's simplest form is 13/20 .

6 0

3 years ago