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AURORKA [14]
3 years ago
9

2) -7(10b+4)-3(-6b+ 5)

Mathematics
2 answers:
zubka84 [21]3 years ago
4 0

Answer:

52b+43

Step-by-step explanation:

-7(10b+4)-3(-6b+ 5)

then -70b-28+18b-15

then -70b+18b-28-15

lastly 52b+43

goldenfox [79]3 years ago
3 0
The answer to the question is
52b - 43
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2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47

Step-by-step explanation:

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Tell whether the ordered pair is a solution to the system of linear equations. 1 point
zloy xaker [14]

Answer:

Yes

(-4,-2) is a solution of a given system of equation

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the equation

                y = 2 x + 6 ..(i)

Given point (-4,-2)

substitute   x =-4 and y = -2 in equation (i)

             -2 =2(-4) +6

            -2  = -8+6

           -2 =-2

∴ The point satisfies the given equation

     

6 0
3 years ago
How many real solutions does this system of equations have? x2+y2=363x−y+1=0 A. 0 B. 3 C. 2 D. 1
Rus_ich [418]

Answer:

Correct option: C -> 2

Step-by-step explanation:

The first equation is:

x^2+y^2=363

And the second equation is:

x-y+1=0

From the second equation, we have:

y = x + 1

Using this value of y in the first equation, we have:

x^2 + (x+1)^2 = 363

x^2 + x^2 + 2x + 1 = 363

2x^2 + 2x= 362

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Calculating the discriminant Delta, we have:

\Delta = b^2 - 4ac = 1 + 4*181 = 725

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Correct option: C.

(If the system of equation is actually:

x^2+y^2=36

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We would have:

y = 3x + 1

x^2+(3x+1)^2=36

x^2+9x^2+6x+1=36

10x^2+6x-35=0

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Correct option: C.)

3 0
3 years ago
The length of a rectangle is 3 more inches than the width. Find the length and width of the rectangle is the perimeter of the re
n200080 [17]

Part A:

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Equation becomes:

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Hence, the width of the rectangle is 12 inches

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