1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andru [333]
3 years ago
8

I need help with this

Mathematics
2 answers:
masya89 [10]3 years ago
8 0
Hello there! With finding the area of the rectangle in this scenario, we have to multiply binomials by doing distribution or in this case, the FOIL method. This means, multiply the terms by the first terms of each parenthesis, the outer terms of the parenthesis, inner terms of the parenthesis, and the last terms in both parenthesis. It's a bit like regular distribution. Set it up like this:

(4x - 7)(x + 3)

Now, multiply the terms. 4x * x is 4x². 4x * 3 is 12x. -7 * x is -7x. -7 * 3 is -21. Combine like terms in order to get 4x² + 5x - 21. The answer is D.

Note: If there is a negative in front of the number you are multiplying, you incorporate the negative in that number. x² is there, because two x's are being multiplied together. Be sure to incorporate these steps and solve the right way and be aware of the symbols. Otherwise, you might make a mistake.
rodikova [14]3 years ago
5 0
You need to expand (4x-7)(x+3), multiplying each term in the first bracket by each term in the second bracket, in order to get 4x^2+5x-21. Hope that helps!
You might be interested in
When simplifying rational numbers, what would the answer be to 57/69
Irina-Kira [14]
You don't simplify rational numbers, but sometimes you can simplify a fraction.
The way to do that is to divide the top and bottom by their greatest common factor.

The greatest common factor of 57 and 69 is 3 .  When you divide the top and
bottom by 3 , you have  19/23 .  That's the simplest form of that particular fraction.
5 0
3 years ago
Read 2 more answers
clara wants to run a total of 5 1/2 miles each lap around the track is 0.25 miles. how many laps around the track does clara nee
NemiM [27]

Answer:

22 laps

Step-by-step explanation:

Clara wants to run 5 1/2 miles, and the track is only 0.25 miles long. This is a fairly easy question, you just need to figure out how many times 5 1/2 goes into 0.25, because she wants to run that amount of miles (I could never run that much).

I hope that answers your question so you understand, and I hope you have a great rest of your day! :)

5 0
3 years ago
Choose the correct description of the graph of the inequality x - 3s 5.
padilas [110]

Answer:

x - 3 > = 5

x > = 5 + 3

x > = 8

closed circle on 8...because of the equal sign.....shaded to the right...because of the > sign.

Step-by-step explanation:

6 0
3 years ago
An investment strategy has an expected return of 15 percent and a standard deviation of 9 percent. Assume investment returns are
IgorLugansk [536]

Answer:

68% of an investment earning a return between 6 percent and 24 percent.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 15

Standard deviation = 9

How likely is it to earn a return between 6 percent and 24 percent?

6 = 15 - 1*9

6 is one standard deviation below the mean

24 = 15 + 1*9

24 is one standard deviation above the mean

By the empirical rule, there is a 68% of an investment earning a return between 6 percent and 24 percent.

6 0
2 years ago
One side of the triangle is 8 in, and the other two sides are equal to a positive whole number of inches. What is the smallest p
frutty [35]
In a triangle the sum of two sides is always greater than the third side.

If one side = 8 in and other two sides are equal to a positive whole number, then the smallest possible sum of the other two sides = 9 in ⇒
<span>Smallest possible perimeter = 8 + 9 = 17 in</span>
6 0
2 years ago
Other questions:
  • A cylinder has an elliptical base with major semiaxis length of 6 cm and minor semiaxis length of 4 cm. its altitude is 7.5 cm.
    9·2 answers
  • Which statements are true about circle Q? Select three options. The ratio of the measure of central angle PQR to the measure of
    12·2 answers
  • Use the drop-down menus to complete each equation so the statement about its solution is true?
    10·1 answer
  • I NEED YOUR HELP IF YOU KNOW HOW TO DO IT OR EVEN HAVE A GREAT QUESS I WOULD LOVE TO HEAR IT SO PLEASE HELP ME PLEASE
    10·1 answer
  • Help.....I need to ace this.
    9·1 answer
  • Find the measure of ∠2.<br><br> a. 32<br> b. 64<br> c. 116<br> d. 90
    14·2 answers
  • What is the measure of the missing angle?)<br><br>Please explain how u got the answer so I can learn
    6·2 answers
  • The factors of 10w2+Ilw - 8 are:
    8·1 answer
  • The sensitive period for language is from 7 months in utero up to 5.5 to 6 years of age. There are several aspects of language f
    9·1 answer
  • HELP ME PLEASE!<br><br> I need HELP!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!