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Setler79 [48]
3 years ago
5

When solving a system of equations by substitution, what is meant by a useless result (12=12)?. a.. parallel lines. c.. inconsis

tent system. b.. no solution. d.. dependent system.
Mathematics
2 answers:
german3 years ago
8 0

Answer:

This is a super old question but it might still help someone else. The answer is D, dependent system. I just took the test.


Step-by-step explanation:


Montano1993 [528]3 years ago
4 0
<span>When solving a system of equations by substitution, meant by a useless result of (12=12) is no solution. The answer is letter B, the equation has no solution because it can have infinite solution. I hope the answer helps, thank you for posting your question here. </span>
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The quotient of 20 and four, multiplied by 10 as an expression
Genrish500 [490]
(20 / 4 )x 10

5 x 10

50
5 0
3 years ago
A geometric sequence has a first term of 3 and a fourth term of 81÷8.<br><br> Find the eighth term
tatuchka [14]

Answer:

6561 / 128

Step-by-step explanation:

The nth term of a geometric sequence is:

a = a₁ (r)ⁿ⁻¹

The first term is 3, and the fourth term is 81/8.

81/8 = 3 (r)⁴⁻¹

27/8 = r³

r = 3/2

The eighth term is therefore:

a = 3 (3/2)⁸⁻¹

a = 6561 / 128

5 0
3 years ago
Help me help me pls............
attashe74 [19]

Answer:

2

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3 0
3 years ago
Read 2 more answers
What is the ratio of girls to boys if there are 15 girls and 5 boys?
WINSTONCH [101]
The answer is 15 : 5

because In mathematics, a ratio is a relationship between two numbers indicating how many times the first number contains the second. For example, if a bowl of fruit contains eight oranges and six lemons, then the ratio of oranges to lemons is eight to six (that is, 8:6, which is equivalent to the ratio 4:3).
And you said girls : boys

That means 15 : 5 or 15 to 5
8 0
3 years ago
Read 2 more answers
On a road trip, a family drives 350 miles per day. How many days, d, must they travel to reach a distance of at least 1,400 mile
Semenov [28]

Answer:

Inequality symbol = ≥

Solution = d≥4

Step-by-step explanation:

If a family drives 350 miles per day, then;

1 day = 350 miles

To determine the number of days they will use to reach at least 1400mles

d days = 1400miles

Divide both expressions

1/d = 350/1400

Cross multiply

350 * d = 1400

350d = 1400

Since we are told that it ia at least 1400miles, this means the total miles can be greater than 1400. Hence the correct inequality sign to use will be a greater than or equal to sign(≥).

The expression above becomes 350d ≥ 1400

Divide both sides by 3350

350d ≥ 1400/350

d≥ 4

Hence the solution that represent the situation is d≥ 4

8 0
3 years ago
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