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VladimirAG [237]

3 years ago

15

How can you tell when an equation in one variable has infinitely many solutions or no solution?

1 answer:

Masteriza [31]3 years ago

6 0

Answer:

A system has infinitely many solutions when it is consistent and the number of variables is more than the number of nonzero rows in the rref of the matrix. For example if the rref is ��has solution set (4-3z, 5+2z, z) where z can be any real number.

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20 points and will give brainliest!!

FromTheMoon [43]

Answer:

$C=0.65M+22.65$

Step-by-step explanation:

The standard charge includes an initial fee and plus an addditional fee for each mile driven and is given by:

$S=0.40M+17.75$

The insurance charge is given by:

$I=0.25M+4.90$

So, the total charge C will be the sum of the standard charge S and the insurance charge I:

$C=S+I$

Substitute:

$C=(0.40M+17.75)+(0.25M+4.90)$

Rearrange:

$C=(0.40M+0.25M)+(17.75+4.90)$

Add:

$C=0.65M+22.65$

And we have acauired our equation relating C to M!

4 0

3 years ago

What is 6/2(1+2)=?

Rufina [12.5K]

Answer:

Answer is 9

Step-by-step explanation:

Remember PEMDAS???

"parenthesis, exponents, multiplication, division, addition, subtraction"

you would first solve the addition inside of the parentheses (1 + 2 = 3), and from there finish the equation as it's written from left to right.

8 0

2 years ago

Read 2 more answers

-8-x=x-4x <br> Solving equations with variables on both sides

Trava [24]

Answer: x=4

Step-by-step explanation:

-8-x=x-4x

-8-x=-3x

-8=-2x

x=4

8 0

2 years ago

Read 2 more answers

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docker41 [41]

Answer:

b)4 11/10

Step-by-step explanation:

4 0

2 years ago

Assume that all intersecting sides meet at right angles

givi [52]

Answer:

6

Step-by-step explanation:

15-9

8 0

3 years ago