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leonid [27]
3 years ago
12

Find the product : (7t+1)(7t-1)

Mathematics
1 answer:
emmasim [6.3K]3 years ago
4 0
A is correct.

explanation: 49t(2)-7t + 7t

becomes 49t(2)-1

please vote my answer brainliest. thanks!
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Trevor solved the system of equations below. What mistake did he make in his work?
wariber [46]

2x + y = 5

x − 2y = 10

y = 5 − 2x

x − 2(5 − 2x) = 10

x − 10 + 4x = 10

5x − 10 = 10

<em>add 10 to each side</em>

<em>5x-10+10 = 10 + 10</em>

<em>5x=20</em>

5x = 0    <em>this is the error</em>

He needs to add 10 to each side

7 0
4 years ago
The diameter of a circle is 22 meters. What is the circle's area?<br> Use 3.14 for ​
marshall27 [118]

Solution:

<u>We know that:</u>

  • Diameter = 22 meters
  • Radius = Diameter/2
  • Area of circle = πr²

<u>Finding the radius:</u>

  • Radius = Diameter/2
  • => Radius = 22/2
  • => Radius = 11 meters

<u>Finding the area of the circle:</u>

  • Area of circle = πr²
  • => Area of circle = (3.14)(11²)
  • => Area of circle = 3.14 x 121
  • => Area of circle = 379.94 m²
7 0
2 years ago
Read 2 more answers
Write an expression that when using th distributive property can be simplified to 12a + 18b -6c
zimovet [89]
You're looking for a common number in all the terms...6.

6(2a+3b-c)
8 0
4 years ago
Pls help I’ll brainlest ASAP
Tamiku [17]

Answer:

Slope: -1/4x

y-int: 2

Step-by-step explanation:

8 0
2 years ago
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Step-by-step explanation:

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