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sergejj [24]
3 years ago
5

If a linear system has four equations and seven variables, then it must have infinitely many solutions. True or False

Mathematics
1 answer:
Savatey [412]3 years ago
7 0

Answer:

The statement is False.

Step-by-step explanation:

Consider the provided information.

If a linear system has four equations and seven variables, then it must have infinitely many solutions.

We need to determine the above statement is true or false.

The above statement is false, it could be inconsistent, and therefore have no solutions,

For example:

x_1+x_2+x_3+x_4 +x_5+x_6+x_7=0\\x_1+x_2+x_3 =1\\x_4 +x_5 =1\\x_6+ x_7=1

Hence, there is no solution.

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viva [34]
I believe the answer is d
7 0
3 years ago
Does the data support the hypothesis explain why? Plz quick
Ratling [72]

Answer:

what is the hypothesis claim?

hypothesis is basically what you expect to happen, so I guess if your hypothesis is similar to the data you've collected yes it does support it.

8 0
3 years ago
If f(x) = 6x-4, what is f(x) when x = 8?
Aleonysh [2.5K]

Answer:

44

Step-by-step explanation:

6(8)-4 = 48-4= 44

6 0
3 years ago
0.8-3.2x<-2-2.8x please help me answer this!!!!! it is timed
Xelga [282]

Answer:

x > 7

Step-by-step explanation:

0.8 - 3.2x < -2 - 2.8x

Add 2.8x to both sides.

0.8 - 0.4x < -2

Subtract 0.8 from both sides.

-0.4x < -2.8

Divide both sides by -0.4. Remember that when you multiply or divide both sides of an inequality by a negative number, the inequality symbol changes direction.

x > 7

4 0
2 years ago
Solve -2(5x – 3) = 41.<br> need help
navik [9.2K]

Answer:

x = -7/2

Step-by-step explanation:

-2(5x - 3) = 41

Distribute the -2 inside the parenthesis.

-10x + 6 = 41

Subtract 6 from both sides.

-10x = 35

Divide both sides by -10.

x = 35/-10

Simplify the fraction.

x = -7/2.

Proof:

-2(5x - 3) = 41

Substitute variable.

-2(5(-7/2) - 3) = 41

Multiply 5 and -7/2.

-2(-35/2 - 3) = 41

Turn 3 into a fraction with denominator 2.

-2(-35/2 - 6/2) = 41

Subtract 6/2 from -35/2.

-2(-41/2) = 41

Multiply -2 and -41/2.

41 = 41.

7 0
2 years ago
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