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
Verdich [7]
3 years ago
6

Multiply: (5t – 4)(4t + 5)

Mathematics
2 answers:
AnnZ [28]3 years ago
5 0
<span>The answer is this 20t2 + 9t – 20. Go look up a video for foiling </span>
ch4aika [34]3 years ago
3 0
<h2>Answer:</h2>

The product of the expression is:

            20t^2+9t-20

<h2>Step-by-step explanation:</h2>

We have to find the product of two algebraic  expressions which are given in terms of variable t  as:

           (5t-4)(4t+5)

We know that the product of two linear function will result in a quadratic equation i.e. a polynomial of degree 2.

We find the product as follows:

(5t-4)(4t+5)=5t(4t+5)-4(4t+5)\\\\\\i.e.\\\\\\(5t-4)(4t+5)=20t^2+25t-16t-20\\\\\\i.e.\\\\(5t-4)(4t+5)=20t^2+9t-20

Hence, the product is:

        20t^2+9t-20

You might be interested in
Answer part A and part B
vredina [299]

Answer: Part A: a square pyramid Part B: 84 square feet

Step-by-step explanation:

Part A: The shape will have a base that is a square with triangles on each of its edges that connect at a point at the top.

Part B: The amount of nylon needed is the surface area of the net. There is a square and two triangles. The square has a side length of 6 so its area will be 6*6=36 square feet. Each triangle has a base of 6 and a height of 4 so each of their areas will be \frac{6*4}{2}=12 square feet. Adding up the area of the 4 triangles and the square gives us 4*12+36=84 square feet.

5 0
3 years ago
An electrician earns $110 after his first hour of working for a client. His total pay based on the number of hours worked can be
VLD [36.1K]
I don't like trying all of them so I will make up my own which will probably be in the answers 
so equation is
f(x)=pay
x=hours worked
solve so 
f(1)=110
f(2)=130
f(3)=150
f(4)=170

they seem to be increasing in 20 increments so therefor the pay is linked to hours times 20 so that measn that every hour he works, he gets 20 dollars
therefor the answer is f(n+1)=f(n)+20 since we know that 1 hour=$20 so n+1hour=n+$20

the answe ris f(n+1)=f(n)+20

5 0
4 years ago
Read 2 more answers
Chris and 3 friends shared 3/4 of a bag of popcorn equally. How much popcorn did each person get?
koban [17]

Answer: 3/16 of the bag

Step-by-step explanation: 3/4 divided by 4 is the same as 3/4 * 1/4 which is 3/16

4 0
3 years ago
Read 2 more answers
A challenge to all math experts...
liq [111]

Answer:

0

Step-by-step explanation:

<h3>Given</h3>
  • (x + \sqrt{1 + x^2})(y + \sqrt{1 + y^2}) = 1
  • (x+y)² = ?
<h3>Solution</h3>

<u>Let's make substitution as:</u>

  • (x + \sqrt{1 + x^2}) = m

then

  • (y + \sqrt{1 + y^2}) = 1/m

<u>Solving the first equation for x and the second one for y:</u>

  • (x + \sqrt{1 + x^2}) = m
  • \sqrt{1 + x^2} = m - x
  • 1 + x² = (m - x)²
  • 1 + x² = m² - 2mx + x²
  • 2mx = m² - 1
  • x = (m² - 1)/2m

And

  • (y + \sqrt{1 + y^2}) = 1/m
  • \sqrt{1 + y^2} = 1/m - y
  • 1 + y² = 1/m² -2y/m + y²
  • 1 = 1/m² - 2y/m
  • m² = 1 - 2my
  • 2my = 1 - m²
  • y = (1 - m²)/2m
  • y = - (m² - 1)/2m

<u>Now, sum of x and y:</u>

  • x + y =  (m² - 1)/2m - (m² - 1)/2m = 0

<u>Therefore:</u>

  • (x+y)² = 0

Answer is zero

8 0
3 years ago
3x+10 greater than 30<br><br> what is x?
Mekhanik [1.2K]

Answer:

x>6.67

Step-by-step explanation:

3x+10>30

3x>30-10

3x>20

x>20/3

x>6.67

5 0
3 years ago
Read 2 more answers
Other questions:
  • 2.67 repeating as a simplified fraction
    12·2 answers
  • Please answer this question ONLY IF YOU KNOW THE ANSWER!! 50 points and brainliest!
    8·2 answers
  • True or False
    10·2 answers
  • How do I do this I need help right now
    14·1 answer
  • Please help explanation if possible
    12·2 answers
  • Evaluate the given expression. Subscript 5 Baseline P Subscript 2 a. 40 c. 25 b. 32 d. 20
    11·2 answers
  • How to multiply 168 x 1873? Please tell me step by step. Thanks!
    11·2 answers
  • Determine if they are congruent. State how they are.
    13·1 answer
  • Solve 16x + 8 &gt; 12x+ 20.
    10·1 answer
  • Just look at this and answer it right someone please how.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!