4 years ago

Which are NOT true for solving equations? Select ALL that apply.

Mathematics

1 answer:

enot [183]4 years ago

3 0

Answer:

d, To undo addition, you can use multiplication

Step-by-step explanation:

a, To remove a whole number next to the variable, multiply both sides by that number

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Can someone help me with this question?

Anarel [89]

Answer:

yea

Step-by-step explanation:

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3 years ago

Can anybody show me the steps to answering this question? 7x - 2z = 4 - xy<br> (solve for x)

Fed [463]

Answer: 2z+4/y+7

Step-by-step explanation:

We are trying to solve for x

7x-2z=4-xy

Add xy to both sides:

7x-2z+xy=-xy+4+xy= xy+7x-2z=4

Then you add 2z to both sides:

xy+7x-2z+2z=4+2z

xy+7x=2z+4

Then you factor out variable x

x(y+7)=2z+4

You divide both sides by y+7

x(y+7)/y+7= 2z+4/y+7

Which we would get x=2z+4/y+7

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3 years ago

Which expression is equalivalent to 2( t-4) + 1

Veronika [31]

Answer:

It's gonna be 2t - 7 my friend

Step-by-step explanation:

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3 years ago

find an equation for the nth term of the sequence. -3, -12, -48, -192, ... select one: a. an = 4 • -3n 1 b. an = -3 • 4n - 1 c.

Andrews [41]

$-3;-12;-48;-192;...\\\\It's\ the\ geometric\ sequence:a_n=a_1r^{n-1}\\\\a_1=-3;\ a_2=-12\\\\r=a_2:a_1\to r=-12:(-3)=4\\\\\boxed{a_n=-3\cdot4^{n-1}}\to\fbox{b.}$

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3 years ago

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A device used in golf to estimate the distance d, in yards, to a hole measures the size s, in inches, that the 7-ft pin appears

Nesterboy [21]

This is a proportional problem.
The distance 'd' corresponds to the 9 inches.
The 7-ft pin corresponds to the size 's'.

Convert 7ft to 7/3 yds. This way you have equal ratio of yds to inches.

$\frac{d}{9} = \frac{7/3}{s} \\ \\ d = \frac{21}{s}$

7 0

3 years ago

Read 2 more answers