Expand and simplify (2x+1)(3x-4)

Answers

Answer 1

Answer: (2x + 1) (3x - 4)
= 6x^2 - 8x + 3x - 4
= 6x^2 - 5x - 4

Answer 2

Answer: e=6x^2-8+3x-4S=6x^2+3x-12

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Mrs. Rodriquez has 24 students in her class. Ten of the students are boys. Jeff claims that the ratio of boys to girls in this class must be 5:12. What is Jeff’s error and how can he correct it?Jeff found the ratio of the number of boys to the total number of students. He needed to first find that there are 14 girls to get a ratio of 10:14 or 5:7.Jeff found the ratio of the number of boys to the total number of students. He needed to first find that there are 14 girls. The ratio would be 14:10 or 7:5.Jeff did not write the ratio in the correct order. He should have written it as 24:10.Jeff did not write the ratio in the correct order. He should have written it as 12:5.

Answers

Answer:

The correct option A.

Step-by-step explanation:

Total numbers of students = 24.

Number of boys = 10

Number of girls = 24 - 10 = 14

Jeff claims that the ratio of boys to girls in this class must be 5:12.

The ratio of the number of boys to the total number of students is

$(boys)/(students)=(10)/(24)=(5)/(12)=5:12$

Therefore Jeff found the ratio of the number of boys to the total number of students.

The ratio of boys to girls in this class is

$(boys)/(girls)=(10)/(14)=(5)/(7)=5:7$

Therefore the ratio of boys to girls in this class is 5:7.

Option A is correct.

The ratio is 10:14 or 5:7 which is the ratio of boys to girls!

Tina lost 3 pounds on the first week of her diet. She gained a pound on the second week, and then lost 2 pounds a week during every week afterwards. She has been dieting for a total of 13 weeks. How many pounds has Tina lost in all?A. 26 pounds
B. 20 pounds
C. 24 pounds
D. 22 pounds

Answers

It's 24 because she has been dieting for 13 weeks in total whick includes the first two when she lost 2 lbs.

answer is B. A Total of 24 pounds Tina lost in 13 weeks!

A recipe for stew calls for 2 pounds of beef to serve 4 people. Gina wants to serve 8 people. How many pounds of beef should she use?

Answers

For serving 8 peoples, 4 pounds of beef is needed.

What is a linear function? What is a mathematical function, equation and expression?

function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.

expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.

equation : A mathematical equation is used to equate two expressions.

Given is that a recipe for stew calls for 2 pounds of beef to serve 4 people. Gina wants to serve 8 people.

It is given that it requires 2 pounds of beef to serve 4 people.

For 1 people, it will take (2/4) or 1/2 pounds of beef.

So, for serving 8 peoples, (1/2) x 8 or 4 pounds of beef is needed.

Therefore, for serving 8 peoples, 4 pounds of beef is needed.

To solve more questions on functions, expressions and polynomials, visit the link below -

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Gina will need 4 pounds of beef because 2×2=4.

Is y = IxI a function? Explain.

Answers

Answer:

It is a function because there is one y value for any x value, and it passes the VERTICAL line test. Horizontal line test is for checking if it is one-to-one, which will tell you if the inverse is a function or not.

A number x multiplied by 25 is 320.