-2 (z + 11) = 6<br><br> Please help. You have to use distributive property.

Write in ordinary form<br> 8.14 x 10-8

amid [387]

Answer:

Hello!

______________________

8.14*10=81.4 Is correct

Step-by-step explanation: Multiply 10 by 8.14.

Hope this helped you!

:D

8 0

3 years ago

Find the value of expression the a3−3a2+5a−7 by substituting a=3.

8090 [49]

Answer:

21 is answer

Step-by-step explanation:

Find the value of expression the a3−3a2+5a−7 by substituting a=3.

6 0

3 years ago

Your help is greatly appreciated. Need help please.

ehidna [41]

Answer:

$13.00

Step-by-step explanation:

Let f represent the price per foot of pasture fence, and p represent the price per foot of picket fence. The two purchases can be written in equation form as ...

2000f + 450p = 12850

700f +300p = 6350

Using Cramer's rule, we can find the value of the picket fence as ...

p = (12850·700 -6350·2000)/(450·700 -300·2000) = -3705000/-285000

p = 13

The cost per foot of picket fence is $13.00.

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<em>Cramer's Rule and Vedic math</em>

The above equation for p is a summary of the math you would be doing if you were to solve the equations by eliminating f. Cramer formulates it in terms of determinants of the coefficients in the equations. Practitioners of Vedic math formulate it in terms of X-pattern combinations of the coefficients in much the same way as finding a determinant. For the equations ...

ax +by = c
dx +ey = f

The solutions are ...

∆ = bd -ea

x = (bf -ec)/∆

y = (cd -fa)/∆ . . . . . this is the equation we used above

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If you do a rigorous comparison of this formula with that of Cramer's rule, you find the signs of numerator and denominator are reversed. That has no net effect on the solution, but it makes the X pattern of products easier to remember for practitioners of Vedic math.

6 0

3 years ago

If f(x) = 5x – 2 and g(x) = 2x + 1, find (f+9)(x).<br><br> A)3x-1<br> B)7x-1<br> C)7x-3<br> D)4x-3

Damm [24]

<h3>Answer:</h3>

B) 7x - 1

<h3>Step-by-step explanation:</h3>

In this question, you're going to solve by adding both f(x) and g(x) together.

You're finding (f+g)(x), meaning that you will be adding both of the equations to get your answer.

What (f+g)(x) looks like:

(5x - 2 + 2x + 1)(x)

What you would do is solve to get your answer. You're going to be combining like-terms and adding.