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3 years ago

Simplify nine to the second power

Mathematics

2 answers:

stich3 [128]3 years ago

7 0

Answer:

2⁹ = 512

Step-by-step explanation:

2⁹ = 2*2*2*2*2*2*2*2*2 = 512

IRISSAK [1]3 years ago

5 0

Answer:

It would be 81

Step-by-step explanation:

$9^{2}$ is the same as 9 times 9. And 9 times 9 is 81.

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Write 50/12 as a mixed number.

skelet666 [1.2K]

4 and 1/6 is the mixed number, or 4 and 2/12

5 0

3 years ago

Read 2 more answers

The next number in the arithmetic sequence 15, 22, 29, is: A) 34 B) 35 C) 36 D) 37

harkovskaia [24]

ANSWER: C) 36
EXPLANATION: +7 is the sequence

4 0

2 years ago

Train a is traveling at 30 mph faster than train b. If train a travels 350 miles in the same amount of time that train b travels

GalinKa [24]

Answer:

20 mph

Step-by-step explanation:

Let speed of Train a = Va mph

Let speed of Train b = Vb mph

Va = Vb + 30

Let time taken for Train a = Ta

Let time taken for Train b = Tb

time taken = distance travelled/speed

Ta = 350/Va = 350/(Vb+30)

Tb = 140/Vb

But they both travel in the same amount of time.

So, Ta = Tb

$\frac{350}{v_{b} + 30}=\frac{140}{v_{b}}$

Cross multiply

$350v_{b} = 140(v_{b} + 30)\\\\350v_{b} = 140v_{b} + 4200\\\\350v_{b} -140v_{b} = 4200\\\\210v_{b} = 4200$

Divide both sides by 210

$\frac{210v_{b} }{210} \frac{4200}{210} \\\\v_{b} = 20 mph$

4 0

3 years ago

Write an equation in slope-intercept form for the line that passes through the given point and is parallel to the graph of the g

krok68 [10]

Answer:

Step-by-step explanation:

The slope of the line is m = -5

4 is your x1

-3 is your y1

Plug into the equation y - y1 = m(x - x1)

y + 3 = -5(x - 4)

y + 3 = -5x + 20

-3 -3

y = -5x + 17

3 0

3 years ago

Determine if the conjecture is true or false. If true, explain your reasoning briefly. If false provide a counterexample.

Arisa [49]

9514 1404 393

Answer:

false

Step-by-step explanation:

The conjecture shown in this problem statement does not follow from the examples offered. They support the notion that ...

1/x ≤ x . . . . for x ≥ 0 (not x ≤ 0)

There are several possible counterexamples showing the conjecture is FALSE.

1/0 is undefined
1/(-5) > -5 . . . . . . . . a case for x < 0

If the intended domain is x ≥ 0, then the conjecture can also be demonstrated to be false for 0 < x < 1:

1/(1/5) > 1/5

7 0

3 years ago