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PSYCHO15rus [73]
2 years ago
11

Multiply (b+3)*(a+7)

Mathematics
2 answers:
mestny [16]2 years ago
6 0

Answer:

ba+7b+3a+21

Step-by-step explanation:

Use the FOIL method: (a+b)*(c+d) = ac+ad+bc+bd(a+b)(c+d )= ac+ad+bc+bd.

tamaranim1 [39]2 years ago
4 0

ba+7a=7. use foil method

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faust18 [17]

Answer:the diameter is 7

Step-by-step explanation: 21.98 divide by pi is 7 so diameter is 7

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2 years ago
Use the identity (x2+y2)2=(x2−y2)2+(2xy)2 to determine the sum of the squares of two numbers if the difference of the squares of
fomenos

Answer:

The sum of the squares of two numbers whose difference of the squares of the numbers is 5 and the product of the numbers is 6 is <u>169</u>

Step-by-step explanation:

Given :  the difference of the squares of the numbers is 5 and the product of the numbers is 6.

We have to find the sum of the squares of two numbers whose difference and product is given using given identity,

(x^2+y^2)^2=(x^2-y^2)^2+(2xy)^2

Since, given the difference of the squares of the numbers is 5 that is (x^2-y^2)^2=5

And the product of the numbers is 6 that is xy=6

Using identity, we have,

(x^2+y^2)^2=(x^2-y^2)^2+(2xy)^2

Substitute, we have,

(x^2+y^2)^2=(5)^2+(2(6))^2

Simplify, we have,

(x^2+y^2)^2=25+144

(x^2+y^2)^2=169

Thus, the sum of the squares of two numbers whose difference of the squares of the numbers is 5 and the product of the numbers is 6 is 169

5 0
2 years ago
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Create a system of linear equations that when solved algebraically, prove to have no solution.
Natalija [7]
The answer is y=3x+7 and y=3x+4
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2 years ago
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Hii gys drop some thanks✌✌​
Anastaziya [24]

Answer:

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2 years ago
How can I memorize square roots 1-30?. I got the list from yahoo answers:. . . 1² = 1. 2² = 4. 3² = 9. 4² = 16. 5² = 25. 6² = 36
pshichka [43]
I think the best way in memorizing the roots of numbers 1 - 30 is by through methods that would suitable for you but you must consider is the pattern in each number or the square, every number has it pattern and i know you realized it by now. I hope this would help 
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2 years ago
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