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amm1812
2 years ago
11

Brown rice costs $2 per pound, and beans cost $1.60 per pound. Lin has $20 to spend on these items to make a large meal of beans

and rice for a potluck dinner. Let b be the number of pound of beans Lin buys and r be the number of pounds of rice she buys when she spends all her money on this meal. ​

Mathematics
1 answer:
Anna11 [10]2 years ago
5 0
All of this money equals 23 dollars
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5) Is 3 a zero (or root) of f(x) = x3 - 9x2 + 11x + 21?
frozen [14]

Answer:

Yes

Step-by-step explanation:

f(x) = x³ − 9x² + 11x + 21

f(3) = (3)³ − 9(3)² + 11(3) + 21

f(3) = 27 − 81 + 33 + 21

f(3) = 0

6 0
3 years ago
Which of the following data could be graphed using a dot plot? Select all that apply.
Sphinxa [80]

Answer:

Time taken to complete a test.

-Number of cars in a -household.

-Number of siblings

Distance driven to school.

Step-by-step explanation:

Data used for a dot plot is relatively small data set where the values can fall into a number of categories/bins. Dot plots are used for univariate data where the variable is quantitative or categorical

5 0
3 years ago
A metalworker has a metal alloy that is 20​% copper and another alloy that is 75​% copper. How many kilograms of each alloy shou
Molodets [167]
That's the answer to your question

4 0
3 years ago
I need help with steps of solving this equation.
saveliy_v [14]

Answer:

x = {-1/5, 1}

Step-by-step explanation:

(5x - 2)² - 1 = 8

Add 1 to both sides

(5x - 2)² = 9

Take the square root of both sides

5x - 2 = ±3

------------------------------

<u>Solution I</u> for 5x - 2 = +3

5x - 2 = 3

add 2 to both sides

5x = 5

Divide both sides by 5

x = 1

------------------------------

<u>Solution II</u> for 5x - 2 = -3

5x - 2 = -3

add 2 to both sides

5x = -1

Divide both sides by 5

x = -1/5

-------------------------------

x = {-1/5, 1}

6 0
3 years ago
Given: 11x-6y=-1; x=8
wolverine [178]
To solve this, simply substiture 8 in for x, and solve for y.

11(8) -6y = -1

Multiply 11 by 8

88 - 6y = -1

Subtract 88 from each side of the equation.

-6y = -89

Lastly divide each side of the equation by -6

y = 89/6 is your answer.

Hope this helps!
5 0
3 years ago
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