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nydimaria [60]
2 years ago
14

X2 + 6X + 9 = 0 O {0} O {-3,3) O {3} O {-3}

Mathematics
1 answer:
expeople1 [14]2 years ago
5 0

Answer:

x=-3

Step-by-step explanation:

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Noor rode her bike two fifth mile in one twelfth hour. At this rate, how far would Noor ride her bike in 1 hour?
Liula [17]
2/5 in 1/12 of an hour

x in 1 hour

So multiply 12 to both fractions

2/5 x 12 in 1/12 x 12 of an hour

We get now:

24/5 in 1 hour

or:

4 4/5 in 1 hour


8 0
3 years ago
Read 2 more answers
How many ways can a President and a Vice President (2 positions) be selected from a group of 10 people?
Anna35 [415]

Answer:

90

Step-by-step explanation:

There are 10 people who can be picked for the first position, which leaves 9 people who can be picked for the second position.

10 × 9 = 90

You can also use permutations.

₁₀P₂ = 90

7 0
2 years ago
Jane has a average score of 73% on three quizzes. What must she score on the next quiz to have an average of 78%?
Ket [755]

Answer:

93

Step-by-step explanation:

The average is calculated as

average = \frac{sum}{count}

On 3 quizzes

\frac{sum}{3} = 73 ( multiply both sides by 3 )

sum = 219

On 4 quizzes, letting x be the score on fourth test

\frac{sum+x}{4} = 78 ( multiply both sides by 4 )

sum + x = 312 , that is

219 + x = 312 ( subtract 219 from both sides )

x = 93

She must score 93 on the next quiz

4 0
2 years ago
Need help with this question click to see
blondinia [14]

Answer:

1) u > 4

2) 7 < u

3) u < 4

4) 7 > u

Step-by-step explanation:

1) subtract 6 - 2

2) add 3 + 4

3) subtract 4 on both sides (8-4)

4) subtract 9 - 2

7 0
3 years ago
Combine like terms to create an equivalent expression 2s+ (-4s) pls help
Sedaia [141]

Answer:

- 2s

Step-by-step explanation:

2s - 4s \\  - 2s

8 0
3 years ago
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