![jayybrain6337](/avatars/8877.jpg)
jayybrain6337
04.08.2021 •
Mathematics
16x^2 - 49 when factored is ?
Solved
Show answers
More tips
- L Leisure and Entertainment What Movies You Should Watch: A Guideline to Make the Right Decision...
- F Family and Home How to Choose a Baby Stroller: Tips from Experienced Parents...
- H Health and Medicine 5 Simple Steps to Quit Smoking for Good...
- C Computers and Internet How to Download Videos from YouTube? Simple Steps to Download Any Content...
- H Health and Medicine What is the Normal Blood Sugar Level in a Healthy Person?...
- S Style and Beauty How to Get Rid of Acne: Scientifically Proven Methods...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- C Computers and Internet How to Delete Your Account on Odnoklassniki...
- H Health and Medicine 10 Simple and Effective Tips on How to Lose Weight in a Week...
- F Food and Cooking What s the Best Rice for Cooking Plov?...
Answers on questions: Mathematics
- M Mathematics What is 20% simplest form plz...
- M Mathematics What are 2 numbers that add to 16 and multiply to 10...
- M Mathematics Which is the better 18 cans of cat food for $15 or 12 cans for $9...
- M Mathematics Write an equation to represent the following statement. j is 7 times as large as 6. solve for j. j=...
- M Mathematics /given that / is a midsegment of /, find x....
- M Mathematics Residuals a residual is the difference between the actual value and the predicted value. suppose the regression line modeling ticket sales is y = –5.9x + 170.85, where...
- M Mathematics How would you classify this polygon...
- M Mathematics 19 julia is allowed to watch no more than 5 hours of television a week. so far this week, she has watched 1.5 hours. write and solve an inequality to show how many hours...
- M Mathematics Which of the following is the most appropriate unit to describe the rate at which data is transferred using the internet? a.) megabits per second, because the independent...
- M Mathematics How many terms are in the algelbraic expression 2y+3×-5x-9...
Ответ:
(4x-7)(4x+7)
Step-by-step explanation:
This is called the Difference of Two Squares (DOTS).
These are the conditions that must be met for DOTS to work:
•There must be 2 terms.
•They must be separated by a negative sign.
•Each term must be a perfect square.
First, you have to find 2 square numbers that times together to make 16.
4×4=16
As we want 16x², you just need to make the 4 become 4x:
4x times 4x equals 16x²
Then, find 2 squares that times together to make 49.
7×7=49
You can put the two squares into a bracket with the x variable first, then the number:
(4x-7)(4x+7)
In the brackets, you always put the negative sign in the first one and then the plus sign in the second one.
You can double check your answer by expanding it back out again using FOIL:
F-First
O-Outer
I-Inner
L-Last
Times the First two in the two brackets:
4x times 4x equals 16x²
Times the Outer two:
4x times 7 equals 28x
Times the Inner two:
-7 times 4x equals -28x
Times the Last two:
-7 times 7 equals -49
Form an equation:
16x²+28x-28x-49
The 28x cancel out to leave:
16x²-49
Hope this helps :)
Ответ:
Option D) 0.02 is the answer.
Step-by-step explanation:
Given that a density curve for all the possible ages between 0 years and 100 years is in the shape of a triangle.
We know that probability for any event A = favourable outcomes/total outcomes
Because probability is expressed as a ratio, probability of an event is always positive and lies between 0 and 1.
Hence total probability is always 1.
Under density curve the area represents the total probability and hence total area =1
Area = Area of triangle = 1/2 bh
=![\frac{1}{2} (100)(h)=1\\h = \frac{2}{100} \\h=0.02](/tpl/images/0305/7216/b06b8.png)
Hence altitude = 0.02